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File tor.changes of Package tor.18174
------------------------------------------------------------------- Fri Nov 3 20:51:01 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.8.8: * Mitigate an issue when Tor compiled with OpenSSL can crash during handshake with a remote relay. (TROVE-2023-004, boo#1216873) * Regenerate fallback directories generated on November 03, 2023. * Update the geoip files to match the IPFire Location Database, as retrieved on 2023/11/03 * directory authority: Look at the network parameter "maxunmeasuredbw" with the correct spelling * vanguards addon support: Count the conflux linked cell as valid when it is successfully processed. This will quiet a spurious warn in the vanguards addon ------------------------------------------------------------------- Mon Sep 25 20:15:52 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.8.7: * Fix an issue that prevented us from pre-building more conflux sets after existing sets had been used ------------------------------------------------------------------- Tue Sep 19 16:52:36 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.8.6: * onion service: Fix a reliability issue where services were expiring their introduction points every consensus update. This caused connectivity issues for clients caching the old descriptor and intro points * Log the input and output buffer sizes when we detect a potential compression bomb * Disable multiple BUG warnings of a missing relay identity key when starting an instance of Tor compiled without relay support * When reporting a pseudo-networkstatus as a bridge authority, or answering "ns/purpose/*" controller requests, include accurate published-on dates from our list of router descriptors * Use less frightening language and lower the log-level of our run-time ABI compatibility check message in our Zstd compression subsystem ------------------------------------------------------------------- Wed Aug 30 18:50:03 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.8.5: * bugfixes creating log BUG stacktrace ------------------------------------------------------------------- Sun Aug 27 15:23:43 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.8.4: * Extend DoS protection to partially opened channels and known relays * Dynamic Proof-Of-Work protocol to thwart flooding DoS attacks against hidden services. Disabled by default, enable via "HiddenServicePoW" in torrc * Implement conflux traffic splitting * Directory authorities and relays now interact properly with directory authorities if they change addresses ------------------------------------------------------------------- Sun Jul 30 07:33:04 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.7.14: * bugfix affecting vanguards (onion service), and minor fixes ------------------------------------------------------------------- Fri Mar 10 08:27:57 UTC 2023 - Martin Pluskal <mpluskal@suse.com> - Enable support for scrypt() ------------------------------------------------------------------- Fri Jan 13 06:29:25 UTC 2023 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.7.13: * fix SafeSocks option to avoid DNS leaks (boo#1207110, TROVE-2022-002) * improve congestion control * fix relay channel handling ------------------------------------------------------------------- Tue Dec 6 21:10:57 UTC 2022 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.7.12: * new key for moria1 * new metrics are exported on the MetricsPort for the congestion control subsystem ------------------------------------------------------------------- Thu Nov 10 19:14:54 UTC 2022 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.7.11: * Improve security of DNS cache by randomly clipping the TTL value (boo#1205307, TROVE-2021-009) * Improved defenses against network-wide DoS, multiple counters and metrics added to MetricsPorts * Apply circuit creation anti-DoS defenses if the outbound circuit max cell queue size is reached too many times. This introduces two new consensus parameters to control the queue size limit and number of times allowed to go over that limit. * Directory authority updates * IPFire database and geoip updates * Bump the maximum amount of CPU that can be used from 16 to 128. The NumCPUs torrc option overrides this hardcoded maximum. * onion service: set a higher circuit build timeout for opened client rendezvous circuit to avoid timeouts and retry load * Make the service retry a rendezvous if the circuit is being repurposed for measurements ------------------------------------------------------------------- Fri Aug 12 15:52:53 UTC 2022 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.7.10 * IPFire location database did not have proper ARIN network allocations - affected circuit path selection and relay metrics ------------------------------------------------------------------- Thu Aug 11 16:39:24 UTC 2022 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.7.9 (boo#1202336) * major fixes aimed at reducing memory pressure on relays * prevent a possible side-channel * major bugfix related to congestion control * major bugfix related to Vanguard L2 layer node selection ------------------------------------------------------------------- Thu Jun 16 17:08:53 UTC 2022 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.7.8 * Fix a scenario where RTT estimation can become wedged, seriously degrading congestion control performance on all circuits. This impacts clients, onion services, and relays, and can be triggered remotely by a malicious endpoint. (TROVE-2022-001, CVE-2022-33903, boo#1200672) * Regenerate fallback directories generated on June 17, 2022. * Update the geoip files to match the IPFire Location Database, as retrieved on 2022/06/17. * Allow the rseq system call in the sandbox * logging bug fixes ------------------------------------------------------------------- Wed Apr 27 18:29:58 UTC 2022 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.7.7 * New feature: Congestion control to improve traffic speed and stability on the network once a majority of Exit nodes upgrade boo#1198949 * Directory authorities: improved handling of "MiddleOnly" relays * Improved mitigation against guard discovery attacks on clients and short-lived services * Improve observed performance under DNS load * Improve handling of overload state * end-of-life relays running version 0.4.2.x, 0.4.3.x, 0.4.4.x and 0.4.5 alphas/rc, 0.3.5.x are now rejected * Onion service v2 addresses are no longer recognized ------------------------------------------------------------------- Sun Feb 6 01:10:07 UTC 2022 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.6.10 * minor bugfixes and features * https://gitlab.torproject.org/tpo/core/tor/-/raw/release-0.4.6/ReleaseNotes ------------------------------------------------------------------- Fri Dec 17 18:54:05 UTC 2021 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.6.9: * remove the DNS timeout metric from the overload general signal * regenerate fallback directories generated on December 15, 2021 * Update the geoip files to match the IPFire Location Database, as retrieved on 2021/12/15 * Reject IPv6-only DirPort ------------------------------------------------------------------- Sat Nov 13 11:02:55 UTC 2021 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.6.8: * Improving reporting of general overload state for DNS timeout errors by relays * Regenerate fallback directories for October 2021 * Bug fixes for onion services * CVE-2021-22929: do not log v2 onion services access attempt warnings on disk excessively (TROVE-2021-008, boo#1192658) ------------------------------------------------------------------- Tue Aug 24 09:11:38 UTC 2021 - Jan Engelhardt <jengelh@inai.de> - Reduce boilerplate generated by %service_*. ------------------------------------------------------------------- Tue Aug 17 18:52:40 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.6.7: * Fix a DoS via a remotely triggerable assertion failure (boo#1189489, TROVE-2021-007, CVE-2021-38385) ------------------------------------------------------------------- Tue Jul 6 07:13:19 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - Add missing service_add_pre tor-master.service ------------------------------------------------------------------- Thu Jul 1 11:13:23 UTC 2021 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.6.6: * Fix a compilation error with gcc 7, drop tor-0.4.6.5-gcc7.patch * Enable the deterministic RNG for unit tests that covers the address set bloomfilter-based API's ------------------------------------------------------------------- Wed Jun 16 20:32:43 UTC 2021 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.6.5 * Add controller support for creating v3 onion services with client auth * When voting on a relay with a Sybil-like appearance, add the Sybil flag when clearing out the other flags. This lets a relay operator know why their relay hasn't been included in the consensus * Relays now report how overloaded they are * Add a new DoS subsystem to control the rate of client connections for relays * Relays now publish statistics about v3 onions services * Improve circuit timeout algorithm for client performance - add tor-0.4.6.5-gcc7.patch to fix build with gcc7 ------------------------------------------------------------------- Mon Jun 14 18:06:34 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.5.9 * Don't allow relays to spoof RELAY_END or RELAY_RESOLVED cell (CVE-2021-34548, boo#1187322) * Detect more failure conditions from the OpenSSL RNG code (boo#1187323) * Resist a hashtable-based CPU denial-of-service attack against relays (CVE-2021-34549, boo#1187324) * Fix an out-of-bounds memory access in v3 onion service descriptor parsing (CVE-2021-34550, boo#1187325) ------------------------------------------------------------------- Tue May 11 01:54:10 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.5.8 * https://lists.torproject.org/pipermail/tor-announce/2021-May/000219.html * allow Linux sandbox with Glibc 2.33 * work with autoconf 2.70+ * several other minor features and bugfixes (see announcement) ------------------------------------------------------------------- Sat Apr 24 19:07:24 UTC 2021 - Andreas Stieger <andreas.stieger@gmx.de> - fix packaging warnings related to tor-master service ------------------------------------------------------------------- Fri Apr 23 21:22:30 UTC 2021 - Andreas Stieger <andreas.stieger@gmx.de> - Fix logging issue due to systemd picking up stdout - boo#1181244 Continue to log notices to syslog by default. - actually build with lzma/zstd - skip i586 tests (boo#1179331) ------------------------------------------------------------------- Tue Mar 16 23:38:53 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.5.7 * https://lists.torproject.org/pipermail/tor-announce/2021-March/000216.html * Fix 2 denial of service security issues (boo#1183726) + Disable the dump_desc() function that we used to dump unparseable information to disk (CVE-2021-28089) + Fix a bug in appending detached signatures to a pending consensus document that could be used to crash a directory authority (CVE-2021-28090) * Ship geoip files based on the IPFire Location Database ------------------------------------------------------------------- Tue Feb 16 07:49:14 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.5.6 * https://lists.torproject.org/pipermail/tor-announce/2021-February/000214.html * Introduce a new MetricsPort HTTP interface * Support IPv6 in the torrc Address option * Add event-tracing library support for USDT and LTTng-UST * Try to read N of N bytes on a TLS connection - Drop upstream tor-practracker.patch ------------------------------------------------------------------- Fri Feb 5 08:16:39 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.4.7 * https://blog.torproject.org/node/1990 * Stop requiring a live consensus for v3 clients and services * Re-entry into the network is now denied at the Exit level * Fix undefined behavior on our Keccak library * Strip '\r' characters when reading text files on Unix platforms * Handle partial SOCKS5 messages correctly - Add tor-practracker.patch to fix tests ------------------------------------------------------------------- Wed Jan 27 06:16:46 UTC 2021 - Bernhard Wiedemann <bwiedemann@suse.com> - Restrict service permissions with systemd ------------------------------------------------------------------- Thu Nov 12 17:02:48 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.4.6 * Check channels+circuits on relays more thoroughly (TROVE-2020-005, boo#1178741) ------------------------------------------------------------------- Tue Sep 15 14:51:40 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.4.5 * Improve guard selection * IPv6 improvements ------------------------------------------------------------------- Wed Aug 19 09:49:51 UTC 2020 - Dominique Leuenberger <dimstar@opensuse.org> - Use %{_tmpfilesdir} instead of abusing %{_libexecdir}/tmpfiles.d. ------------------------------------------------------------------- Thu Jul 9 17:27:13 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.3.6 * Fix a crash due to an out-of-bound memory access (CVE-2020-15572) * Some minor fixes ------------------------------------------------------------------- Mon Jun 29 08:57:42 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com> - Fix logrotate to not fail when tor is stopped (boo#1164275) ------------------------------------------------------------------- Fri May 15 18:58:11 UTC 2020 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.3.5: * first stable release in the 0.4.3.x series * implement functionality needed for OnionBalance with v3 onion services * significant refactoring of our configuration and controller functionality * Add support for banning a relay's ed25519 keys in the approved-routers file in support for migrating away from RSA * support OR connections through a HAProxy server ------------------------------------------------------------------- Wed Mar 18 20:52:20 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.2.7 * CVE-2020-10592: CPU consumption DoS and timing patterns (boo#1167013) * CVE-2020-10593: circuit padding memory leak (boo#1167014) * Directory authorities now signal bandwidth pressure to clients * Avoid excess logging on bug when flushing a buffer to a TLS connection ------------------------------------------------------------------- Fri Jan 31 08:32:28 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com> - tor 0.4.2.6 * Correct how we use libseccomp * Fix crash when reloading logging configuration while the experimental sandbox is enabled * Avoid a possible crash when logging an assertion about mismatched magic numbers ------------------------------------------------------------------- Tue Jan 7 11:21:02 UTC 2020 - Bernhard Wiedemann <bwiedemann@suse.com> - Update tor.service and add defaults-torrc to work without dropped torctl (boo#1072274) - Add tor-master.service to allow handling multiple tor daemons ------------------------------------------------------------------- Sat Dec 14 20:35:25 UTC 2019 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.2.5: * first stable release in the 0.4.2.x series * improves reliability and stability * several stability and correctness improvements for onion services * fixes many smaller bugs present in previous series ------------------------------------------------------------------- Tue Dec 10 08:27:14 UTC 2019 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.1.7: * several bugfixes to improve stability and correctness * fixes for relays relying on AccountingMax ------------------------------------------------------------------- Mon Oct 7 13:16:38 UTC 2019 - Martin Pluskal <mpluskal@suse.com> - Update dependnecnies: * python3 instead of python * add libpcap and seccomp - Use more suitable macros for building and systemd dependencies ------------------------------------------------------------------- Thu Sep 19 13:02:59 UTC 2019 - Bernhard Wiedemann <bwiedemann@suse.com> - update to 0.4.1.6 * Tolerate systems (including some Linux installations) where madvise MADV_DONTFORK / MADV_DONTDUMP are available at build-time, but not at run time. * Do not include the deprecated <sys/sysctl.h> on Linux * Fix the MAPADDRESS controller command to accept one or more arguments * Always retry v2+v3 single onion service intro and rendezvous circuits with a 3-hop path * Use RFC 2397 data URL scheme to embed an image into tor-exit-notice.html ------------------------------------------------------------------- Tue Aug 20 15:43:45 UTC 2019 - Bernhard Wiedemann <bwiedemann@suse.com> - update to 0.4.1.5 * Onion service clients now add padding cells at the start of their INTRODUCE and RENDEZVOUS circuits to make it look like Exit traffic * Add a generic publish-subscribe message-passing subsystem * Controller commands are now parsed using a generalized parsing subsystem * Implement authenticated SENDMEs as detailed in proposal 289 * Our node selection algorithm now excludes nodes in linear time * Construct a fast secure pseudorandom number generator for each thread, to use when performance is critical * Consider our directory information to have changed when our list of bridges changes * Do not count previously configured working bridges towards our total of working bridges * When considering upgrading circuits from "waiting for guard" to "open", always ignore circuits that are marked for close * Properly clean up the introduction point map when circuits change purpose * Fix an unreachable bug in which an introduction point could try to send an INTRODUCE_ACK * Clients can now handle unknown status codes from INTRODUCE_ACK cells - Remove upstreamed tor-0.3.5.8-no-ssl-version-warning.patch - Compile without -Werror to build with LTO (boo#1146548) - Add fix-test.patch to workaround a LTO-induced test-failure ------------------------------------------------------------------- Fri Jul 26 12:23:05 UTC 2019 - matthias.gerstner@suse.com - removal of SuSEfirewall2 service, since SuSEfirewall2 has been replaced by firewalld, see [1]. [1]: https://lists.opensuse.org/opensuse-factory/2019-01/msg00490.html ------------------------------------------------------------------- Mon May 20 12:55:12 UTC 2019 - Christophe Giboudeaux <christophe@krop.fr> - Add the missing zlib requirement. ------------------------------------------------------------------- Fri May 10 09:46:26 UTC 2019 - Andreas Stieger <andreas.stieger@gmx.de> - tor 0.4.0.5: * new stable branch, but not a long-term support branch * improvements for power management and bootstrap reporting * preliminary backend support for circuit padding to prevent some kinds of traffic analysis * refactoring for long-term maintainability - drop upstreamed tor-0.3.5.8-nonetwork.patch ------------------------------------------------------------------- Mon Apr 15 12:24:02 UTC 2019 - Bernhard Wiedemann <bwiedemann@suse.com> - Add tor-0.3.5.8-no-ssl-version-warning.patch (boo#1129411) - Update tor.tmpfiles to use /run instead of /var/run ------------------------------------------------------------------- Mon Feb 25 15:55:39 UTC 2019 - bwiedemann@suse.com - Add tor-0.3.5.8-nonetwork.patch to fix test failures without network ------------------------------------------------------------------- Fri Feb 22 15:04:30 UTC 2019 - bwiedemann@suse.com - tor 0.3.5.8: * CVE-2019-8955 prevent attackers from making tor run out of memory and crash * Allow SOCKS5 with empty username+password * Update geoip and geoip6 to the February 5 2019 Maxmind GeoLite2 Country database * Select guards even if the consensus has expired, as long as the consensus is still reasonably live ------------------------------------------------------------------- Mon Jan 7 23:16:55 UTC 2019 - astieger@suse.com - tor 0.3.5.7: * first stable release in 0.3.5.x LTS branch * support client authorization for v3 onion services * cleanups to bootstrap reporting * support for improved bandwidth measurement tools * the default version for newly created onion services is now v3 (HiddenServiceVersion option can be used to override) * If stem is used, an update of stem mey be required ------------------------------------------------------------------- Mon Jan 7 23:01:18 UTC 2019 - astieger@suse.com - tor 0.3.4.10: * OpenSSL compatibility fixes * Fixes for relay bugs * update fallback directory list ------------------------------------------------------------------- Sat Nov 3 08:45:43 UTC 2018 - astieger@suse.com - tor 0.3.4.9: * Various bug fixes, including a bandwidth management bug that was causing memory exhaustion on relays ------------------------------------------------------------------- Mon Sep 10 15:51:17 UTC 2018 - astieger@suse.com - tor 0.3.4.8 (boo#1107847): * improvements for running in low-power and embedded environments * preliminary changes for new bandwidth measurement system * refine anti-denial-of-service code ------------------------------------------------------------------- Mon Sep 10 13:52:34 UTC 2018 - astieger@suse.com - tor 0.3.3.10: * various build and compatibility fixes * The control port now exposes the list of HTTPTunnelPorts and ExtOrPorts via GETINFO net/listeners/httptunnel and net/listeners/extor respectively * Authorities no longer vote to make the subprotocol version "LinkAuth=1" a requirement: it is unsupportable with NSS, and hasn't been needed since Tor 0.3.0.1-alpha * When voting for recommended versions, make sure that all of the versions are well-formed and parsable * various minor bug fixes on onion services ------------------------------------------------------------------- Sat Jul 14 18:31:57 UTC 2018 - astieger@suse.com - tor 0.3.3.9: * move to a new bridge authority * backport some bug fixes - refresh upstream signing keyring ------------------------------------------------------------------- Mon Jul 9 19:38:14 UTC 2018 - astieger@suse.com - tor 0.3.3.8: * directory authority memory leak fix * various minor bug fixes ------------------------------------------------------------------- Tue Jun 12 16:59:58 UTC 2018 - astieger@suse.com - tor 0.3.3.7: * Add an IPv6 address for the "dannenberg" directory authority * Improve accuracy of the BUILDTIMEOUT_SET control port event's TIMEOUT_RATE and CLOSE_RATE fields * Only select relays when tor has descriptors that it prefers to use for them, avoiding nonfatal errors later ------------------------------------------------------------------- Sun May 27 11:33:54 UTC 2018 - astieger@suse.com - tor 0.3.3.6: * new stable release series * controller support and other improvements for v3 onion services * official support for embedding Tor within other application * Improvements to IPv6 support * Relay option ReducedExitPolicy to configure a reasonable default * Revent DoS via malicious protocol version string (boo#1094283) * Many other other bug fixes and improvements ------------------------------------------------------------------- Sat Mar 3 18:39:39 UTC 2018 - astieger@suse.com - tor 0.3.2.10: * CVE-2018-0490: remote crash vulnerability against directory authorities (boo#1083845, TROVE-2018-001) * CVE-2018-0491: remote relay crash (boo#1083846, TROVE-2018-002) * New system for improved resistance to DoS attacks against relays * Various other bug fixes ------------------------------------------------------------------- Wed Jan 10 21:33:45 UTC 2018 - astieger@suse.com - tor 0.3.2.9: * new onion service design (v3), not default * new circuit scheduler algorithm for improved performance * directory authority updates * many other updates and improvements ------------------------------------------------------------------- Fri Dec 1 20:33:08 UTC 2017 - astieger@suse.com - tor 0.3.1.9 with the following security fixes that prevent some traffic confirmation, DoS and other problems (bsc#1070849): * CVE-2017-8819: Replay-cache ineffective for v2 onion services * CVE-2017-8820: Remote DoS attack against directory authorities * CVE-2017-8821: An attacker can make Tor ask for a password * CVE-2017-8822: Relays can pick themselves in a circuit path * CVE-2017-8823: Use-after-free in onion service v2 ------------------------------------------------------------------- Wed Oct 25 15:05:45 UTC 2017 - astieger@suse.com - tor 0.3.1.8: * Add "Bastet" as a ninth directory authority to the default list * The directory authority "Longclaw" has changed its IP address * Fix a timing-based assertion failure that could occur when the circuit out-of-memory handler freed a connection's output buffer * Update geoip and geoip6 to the October 4 2017 Maxmind GeoLite2 Country database - drop tor-0.3.1.7-fix-zstd-i586.patch, upstreamed ------------------------------------------------------------------- Wed Sep 20 14:44:09 UTC 2017 - astieger@suse.com - tor 0.3.1.7: * Serve and download directory information in more compact formats * New padding padding system to resist netflow-based traffic analysis * Improve protection against identification of tor traffic by ISP via ConnectionPadding option * Reduce the number of long-term connections open between relays - add tor-0.3.1.7-fix-zstd-i586.patch to fix 32 bit build with zstd ------------------------------------------------------------------- Mon Sep 18 16:38:59 UTC 2017 - astieger@suse.com - tor 0.3.0.11: * CVE-2017-0380: hidden services with the SafeLogging option disabled could disclose the stack TROVE-2017-008, boo#1059194 * Update geoip and geoip6 to the September 6 2017 Maxmind GeoLite2 Country database. * drop tor-0.3.0.7-gcc7-fallthrough.patch, now upstream ------------------------------------------------------------------- Thu Aug 3 11:26:00 UTC 2017 - jloehel@suse.com - tor 0.3.0.10 * Fix a typo that had prevented TPROXY-based transparent proxying from working under Linux. * Avoid an assertion failure bug affecting our implementation of inet_pton(AF_INET6) on certain OpenBSD systems. ------------------------------------------------------------------- Fri Jun 30 11:53:59 UTC 2017 - astieger@suse.com - tor 0.3.0.9: * CVE-2017-0377: Fix path selection bug that would allow a client to use a guard that was in the same network family as a chosen exit relay (bsc#1046845) * Don't block bootstrapping when a primary bridge is offline and tor cannot get its descriptor * When starting with an old consensus, do not add new entry guards unless the consensus is "reasonably live" (under 1 day old). * Update geoip and geoip6 to the June 8 2017 Maxmind GeoLite2 Country database. ------------------------------------------------------------------- Thu Jun 8 18:47:31 UTC 2017 - astieger@suse.com - tor 0.3.0.8 fixing a pair of bugs that would allow an attacker to remotely crash a hidden service with an assertion failure * CVE-2017-0375: remotely triggerable assertion failure when a hidden service handles a malformed BEGIN cell (bsc#1043455) * CVE-2017-0376: remotely triggerable assertion failure caused by receiving a BEGIN_DIR cell on a hidden service rendezvous circuit (bsc#1043456) - further bug fixes: * link handshake fixes when changing x509 certificates * Regenerate link and authentication certificates whenever the key that signs them changes; also, regenerate link certificates whenever the signed key changes * When sending an Ed25519 signing->link certificate in a CERTS cell, send the certificate that matches the x509 certificate that was used on the TLS connection * Stop rejecting v3 hidden service descriptors because their size did not match an old padding rule ------------------------------------------------------------------- Wed May 31 10:01:51 UTC 2017 - astieger@suse.com - fix build with GCC 7: warning-errors on implicit fallthrough add tor-0.3.0.7-gcc7-fallthrough.patch bsc#1041262 ------------------------------------------------------------------- Tue May 16 00:26:43 UTC 2017 - astieger@suse.com - tor 0.3.0.7: * Fix an assertion failure in the hidden service directory code, which could be used by an attacker to remotely cause a Tor relay process to exit. TROVE-2017-002 bsc#1039211 * Update geoip and geoip6 to the May 2 2017 Maxmind GeoLite2 Country database. * Tor no longer refuses to download microdescriptors or descriptors if they are listed as "published in the future" * The getpid() system call is now permitted under the Linux seccomp2 sandbox, to avoid crashing with versions of OpenSSL (and other libraries) that attempt to learn the process's PID by using the syscall rather than the VDSO code ------------------------------------------------------------------- Thu Apr 27 06:23:44 UTC 2017 - astieger@suse.com - tor 0.3.0.6: * clients and relays now use Ed25519 keys to authenticate their link connections to relays, rather than the old RSA1024 keys that they used before. * replace the guard selection and replacement algorithm to behave more robustly in the presence of unreliable networks, and to resist guard-capture attacks. * numerous other small features and bugfixes * groundwork for the upcoming hidden-services revamp ------------------------------------------------------------------- Wed Mar 1 22:45:42 UTC 2017 - astieger@suse.com - tor 0.2.9.10: * directory authority: During voting, when marking a relay as a probable sybil, do not clear its BadExit flag: sybils can still be bad in other ways too. * IPv6 Exits: Stop rejecting all IPv6 traffic on Exits whose exit policy rejects any IPv6 addresses. Instead, only reject a port over IPv6 if the exit policy rejects that port on more than an IPv6 /16 of addresses. * parsing: Fix an integer underflow bug when comparing malformed Tor versions. This bug could crash Tor when built with --enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor 0.2.9.8, which were built with -ftrapv by default. In other cases it was harmless. Part of TROVE-2017-001 boo#1027539 * Directory authorities now reject descriptors that claim to be malformed versions of Tor * Reject version numbers with components that exceed INT32_MAX. * Update geoip and geoip6 to the February 8 2017 Maxmind GeoLite2 Country database. * The tor-resolve command line tool now rejects hostnames over 255 characters in length ------------------------------------------------------------------- Tue Jan 24 06:19:19 UTC 2017 - astieger@suse.com - tor 0.2.9.9: * Downgrade the "-ftrapv" option from "always on" to "only on when --enable-expensive-hardening is provided." This hardening option, like others, can turn survivable bugs into crashes -- and having it on by default made a (relatively harmless) integer overflow bug into a denial-of-service bug * Fix a client-side onion service reachability bug * Update geoip and geoip6 to the January 4 2017 Maxmind GeoLite2 Country database. ------------------------------------------------------------------- Sun Jan 1 11:43:02 UTC 2017 - tchvatal@suse.com - Remove conditionals for the sle11 as we won't build there due to openssl requirements. This reduces the logic in the spec file quite a bit ------------------------------------------------------------------- Mon Dec 19 20:40:39 UTC 2016 - astieger@suse.com - tor 0.2.9.8, the first stable release in the 0.2.9.x series: * make mandatory a number of security features that were formerly optional * support a new shared-randomness protocol that will form the basis for next generation hidden services * single-hop hidden service mode for optimizing .onion services that don't actually want to be hidden, * try harder not to overload the directory authorities with excessive downloads * support a better protocol versioning scheme for improved compatibility with other implementations of the Tor protocol * deprecated options for security: CacheDNS, CacheIPv4DNS, CacheIPv6DNS, UseDNSCache, UseIPv4Cache, and UseIPv6Cache, AllowDotExit, AllowInvalidNodes, AllowSingleHopCircuits, AllowSingleHopExits, ClientDNSRejectInternalAddresses, CloseHSClientCircuitsImmediatelyOnTimeout, CloseHSServiceRendCircuitsImmediatelyOnTimeout, ExcludeSingleHopRelays, FastFirstHopPK, TLSECGroup, UseNTorHandshake, and WarnUnsafeSocks. * *ListenAddress options are now deprecated as unnecessary: the corresponding *Port options should be used instead. The affected options are: ControlListenAddress, DNSListenAddress, DirListenAddress, NATDListenAddress, ORListenAddress, SocksListenAddress, and TransListenAddress. ------------------------------------------------------------------- Mon Dec 19 20:29:49 UTC 2016 - astieger@suse.com - tor 0.2.8.12: * CVE-2016-1254: A hostile hidden service could cause tor clients to crash (bsc#1016343) * update fallback directory list * Update geoip and geoip6 to the December 7 2016 Maxmind GeoLite2 Country database. ------------------------------------------------------------------- Tue Dec 13 06:41:55 UTC 2016 - bwiedemann@suse.com - recommend torsocks as it is needed by included torify ------------------------------------------------------------------- Sun Dec 11 19:40:35 UTC 2016 - astieger@suse.com - tor 0.2.8.11: * Fix compilation with OpenSSL 1.1 ------------------------------------------------------------------- Fri Dec 2 16:58:06 UTC 2016 - astieger@suse.com - tor 0.2.8.10: * When Tor leaves standby because of a new application request, open circuits as needed to serve that request * Clients now respond to new application stream requests immediately when they arrive, rather than waiting up to one second before starting to handle them * small portability and memory handling issues * Update geoip and geoip6 to the November 3 2016 Maxmind GeoLite2 Country database. ------------------------------------------------------------------- Wed Oct 19 09:08:12 UTC 2016 - astieger@suse.com - tor 0.2.8.9: * security fix: prevent remote DoS TROVE-2016-10-001 boo#1005292 * Update geoip and geoip6 to the October 4 2016 Maxmind GeoLite2 Country database. * Update signing key ------------------------------------------------------------------- Sat Sep 24 13:52:20 UTC 2016 - astieger@suse.com - tor 0.2.8.8: * fixes some crash bugs when using bridges * fixes a timing-dependent assertion * removes broken fallbacks from the hard-coded fallback directory list * Updates geoip and geoip6 to the September 6 2016 Maxmind GeoLite2 Country database ------------------------------------------------------------------- Wed Aug 24 21:01:13 UTC 2016 - astieger@suse.com - tor 0.2.8.7: * The "Tonga" bridge authority has been retired; the new bridge authority is "Bifroest" * Only use the ReachableAddresses option to restrict the first hop in a path. In earlier versions of 0.2.8.x, it would apply to every hop in the path, with a possible degradation in anonymity for anyone using an uncommon ReachableAddress setting ------------------------------------------------------------------- Sat Aug 13 17:44:24 UTC 2016 - astieger@suse.com - tor 0.2.8.6: * improve client bootstrapping performance * improved identity keys for relays (authority side) * numerous bug fixes and performance improvements ------------------------------------------------------------------- Mon Mar 21 08:17:17 UTC 2016 - astieger@suse.com - adjust nologin shell for tor user boo#971872 ------------------------------------------------------------------- Fri Dec 11 14:41:37 UTC 2015 - mpluskal@suse.com - Make building more verbose - Remove useless conditon for libevent, there is dependency for it anyway ------------------------------------------------------------------- Fri Dec 11 13:35:32 UTC 2015 - astieger@suse.com - skip tests on ports ------------------------------------------------------------------- Fri Dec 11 07:43:48 UTC 2015 - astieger@suse.com - tor 0.2.7.6 fixes a major bug in entry guard selection, as well as a minor bug in hidden service reliability. [boo#958729] ------------------------------------------------------------------- Tue Nov 24 20:35:59 UTC 2015 - astieger@suse.com - 0.2.7.5: * More secure identity key type for relays * Improve cryptography performance * Resolve several longstanding hidden-service performance issues * Improve controller support for hidden services - Features removed: * tor-fw-helper is no longer part of thie packaged, it was re-implemented as a separate project - Packaging changes: * drop upstreamed patch tor-0.2.6.10-malformed-hostname-safe-logging.patch ------------------------------------------------------------------- Wed Oct 14 10:59:41 UTC 2015 - astieger@suse.com - fix Factory build (ignore missing systemd-tmpfiles) ------------------------------------------------------------------- Wed Aug 26 20:02:21 UTC 2015 - astieger@suse.com - Malformed hostnames in socks5 requests were written to the log regardless of SafeLogging option (CWE-532) [boo#943362] add tor-0.2.6.10-malformed-hostname-safe-logging.patch ------------------------------------------------------------------- Sun Jul 12 20:54:48 UTC 2015 - astieger@suse.com - tor 0.2.6.10: Significant stability and hidden service client fixes. * Stop refusing to store updated hidden service descriptors on a client. * Stop crashing with an assertion failure when parsing certain kinds of malformed or truncated microdescriptors. * Stop random client-side assertion failures that could occur when connecting to a busy hidden service, or connecting to a hidden service while a NEWNYM is in progress. ------------------------------------------------------------------- Thu Jun 11 18:55:44 UTC 2015 - astieger@suse.com - tor 0.2.6.9: Clients using circuit isolation should upgrade; all directory authorities should upgrade. * fixes a regression in the circuit isolation code * increases the requirements for receiving an HSDir flag * addresses some small bugs in the systemd and sandbox code. ------------------------------------------------------------------- Sat May 23 18:59:14 UTC 2015 - astieger@suse.com - tor 0.2.6.8: This release fixes a bit of dodgy code in parsing INTRODUCE2 cells, and fixes an authority-side bug in assigning the HSDir flag. All directory authorities should upgrade. - Revert commit that made directory authorities assign the HSDir flag to relay without a DirPort; this was bad because such relays can't handle BEGIN_DIR cells. - Fix an out-of-bounds read when parsing invalid INTRODUCE2 cells on a client authorized hidden service. - Update geoip to the April 8 2015 Maxmind GeoLite2 Country database. - Update geoip6 to the April 8 2015 Maxmind GeoLite2 Country database. ------------------------------------------------------------------- Mon Apr 6 18:56:30 UTC 2015 - astieger@suse.com - tor 0.2.6.7 This releases fixes two security issues that could be used by an attacker to crash hidden services, or crash clients visiting hidden services. Hidden services should upgrade as soon as possible. [boo#926097] This release also contains two simple improvements to make hidden services a bit less vulnerable to denial-of-service attacks. - Fix an issue that would allow a malicious client to trigger an assertion failure and halt a hidden service. CVE-2015-2928 - Fix a bug that could cause a client to crash with an assertion failure when parsing a malformed hidden service descriptor. CVE-2015-2929 - Introduction points no longer allow multiple INTRODUCE1 cells to arrive on the same circuit. This should make it more expensive for attackers to overwhelm hidden services with introductions. - Decrease the amount of reattempts that a hidden service performs when its rendezvous circuits fail. This reduces the computational cost for running a hidden service under heavy load. ------------------------------------------------------------------- Sun Mar 29 11:51:09 UTC 2015 - astieger@suse.com - tor 0.2.6.6, the first stable release in the 0.2.6 series: * safety/security improvements * correctness improvements * performance improvements * Client programs can be configured to use more kinds of sockets * AutomapHosts works better * multithreading backend is improved * cell transmission is refactored * test coverage is much higher * more denial-of-service attacks are handled * guard selection is improved to handle long-term guards better * pluggable transports should work a bit better * some annoying hidden service performance bugs addressed - new minimal configuration file installed as active configuration allows daemon to be run right after package installation - build with systemd notifications where supported ------------------------------------------------------------------- Wed Mar 25 08:05:24 UTC 2015 - astieger@suse.com - add CVE IDs for 0.2.5.11 release ------------------------------------------------------------------- Thu Mar 19 21:36:34 UTC 2015 - astieger@suse.com - tor 0.2.5.11 [boo#923284]: Contains several medium-level security fixes for relays and exit nodes and also updates the list of directory authorities. * Directory authority updates * relay crashes trough assertion (CVE-2015-2688) * exit node crash through assertion under high DNS load (CVE-2015-2689) * do not crash when receiving SIGHUP with the seccomp2 sandbox on * do not crash sh during attempts to call wait4 * new "GETINFO bw-event-cache" for controllers * update geoip/geoip6 to the March 3 2015 * Avoid crashing on malformed VirtualAddrNetworkIPv[4|6] config * Fix a memory leak when using AutomapHostsOnResolve * Allow directory authorities to fetch more data from one another ------------------------------------------------------------------- Fri Jan 23 22:04:27 UTC 2015 - andreas.stieger@gmx.de - fix build for SLE 12, libminiupnpc-devel not available ------------------------------------------------------------------- Fri Oct 24 20:48:14 UTC 2014 - andreas.stieger@gmx.de - tor 0.2.5.10, the first stable release in the 0.2.5 series. * improved denial-of-service resistance for relays * new compiler hardening options * system-call sandbox for hardened installations on Linux (requires seccomp2) * controller protocol has several new features * improvements in resolving IPv6 addresses * relays more CPU-efficient - adjust tor-0.2.4.x-logrotate.patch to tor-0.2.5.x-logrotate.patch - run unit tests ------------------------------------------------------------------- Thu Oct 23 20:35:26 UTC 2014 - andreas.stieger@gmx.de - tor 0.2.4.25 [boo#902476] Disables SSL3 in response to the recent "POODLE" attack (even though POODLE does not affect Tor). It also works around a crash bug caused by some operating systems' response to the "POODLE" attack (which does affect Tor). - Disable support for SSLv3. - Avoid crashing when using OpenSSL version 0.9.8zc, 1.0.0o, or 1.0.1j, built with the 'no-ssl3' configuration option. ------------------------------------------------------------------- Wed Sep 24 17:52:08 UTC 2014 - andreas.stieger@gmx.de - tor 0.2.4.24 [bnc#898268] Fixes a bug that affects consistency and speed when connecting to hidden services, and it updates the location of one of the directory authorities. - Major bugfixes: * Clients now send the correct address for their chosen rendezvous point when trying to access a hidden service. - Directory authority changes: * Change IP address for gabelmoo (v3 directory authority). - Minor features (geoip): * Update geoip and geoip6 to the August 7 2014 Maxmind GeoLite2 Country database. ------------------------------------------------------------------- Sat Sep 20 13:05:50 UTC 2014 - andreas.stieger@gmx.de - disable build with experimental feature bufferevents [bnc#897113] ------------------------------------------------------------------- Mon Aug 18 09:54:00 UTC 2014 - wagner-thomas@gmx.at - Added config file for firewall ------------------------------------------------------------------- Wed Jul 30 22:52:17 UTC 2014 - andreas.stieger@gmx.de - Tor 0.2.4.23 [bnc#889688] [CVE-2014-5117] Slows down the risk from guard rotation and backports several important fixes from the Tor 0.2.5 alpha release series. - Major features: - Clients now look at the "usecreatefast" consensus parameter to decide whether to use CREATE_FAST or CREATE cells for the first hop of their circuit. This approach can improve security on connections where Tor's circuit handshake is stronger than the available TLS connection security levels, but the tradeoff is more computational load on guard relays. - Make the number of entry guards configurable via a new NumEntryGuards consensus parameter, and the number of directory guards configurable via a new NumDirectoryGuards consensus parameter. - Major bugfixes: - Fix a bug in the bounds-checking in the 32-bit curve25519-donna implementation that caused incorrect results on 32-bit implementations when certain malformed inputs were used along with a small class of private ntor keys. - Minor bugfixes: - Warn and drop the circuit if we receive an inbound 'relay early' cell. - Correct a confusing error message when trying to extend a circuit via the control protocol but we don't know a descriptor or microdescriptor for one of the specified relays. - Avoid an illegal read from stack when initializing the TLS module using a version of OpenSSL without all of the ciphers used by the v2 link handshake. ------------------------------------------------------------------- Fri Jun 6 18:51:36 UTC 2014 - andreas.stieger@gmx.de - do not own /var/run/tor for pid file, fixing Factory build ------------------------------------------------------------------- Sat May 17 23:13:54 UTC 2014 - andreas.stieger@gmx.de - tor 0.2.4.22: Backports numerous high-priority fixes. These include blocking all authority signing keys that may have been affected by the OpenSSL "heartbleed" bug, choosing a far more secure set of TLS ciphersuites by default, closing a couple of memory leaks that could be used to run a target relay out of RAM. - Major features (security) - Block authority signing keys that were used on authorities vulnerable to the "heartbleed" bug in OpenSSL (CVE-2014-0160). - Major bugfixes (security, OOM): - Fix a memory leak that could occur if a microdescriptor parse fails during the tokenizing step. - Major bugfixes (TLS cipher selection): - The relay ciphersuite list is now generated automatically based on uniform criteria, and includes all OpenSSL ciphersuites with acceptable strength and forward secrecy. - Relays now trust themselves to have a better view than clients of which TLS ciphersuites are better than others. - Clients now try to advertise the same list of ciphersuites as Firefox 28. - further minor bug fixes, see ChangeLog - fix logrotate on systemd-only setups without init scripts, work tor-0.2.2.37-logrotate.patch to tor-0.2.4.x-logrotate.patch ------------------------------------------------------------------- Sat Apr 19 02:54:55 UTC 2014 - mook.moz+com.novell@gmail.com - Add tor-fw-helper for UPnP port forwarding; not used by default ------------------------------------------------------------------- Thu Mar 6 08:02:15 UTC 2014 - andreas.stieger@gmx.de - tor 0.2.4.21 Further improves security against potential adversaries who find breaking 1024-bit crypto doable, and backports several stability and robustness patches from the 0.2.5 branch. - Major features (client security): - When we choose a path for a 3-hop circuit, make sure it contains at least one relay that supports the NTor circuit extension handshake. Otherwise, there is a chance that we're building a circuit that's worth attacking by an adversary who finds breaking 1024-bit crypto doable, and that chance changes the game theory. - Major bugfixes: - Do not treat streams that fail with reason END_STREAM_REASON_INTERNAL as indicating a definite circuit failure, since it could also indicate an ENETUNREACH connection error - packaging changes: - remove init script shadowing systemd unit - general cleanup ------------------------------------------------------------------- Mon Jan 20 19:46:02 UTC 2014 - andreas.stieger@gmx.de - redaction of 0.2.4.20 changelog to include bug and CVE references ------------------------------------------------------------------- Fri Dec 27 20:55:26 UTC 2013 - andreas.stieger@gmx.de - tor 0.2.4.20 fixes potentially poor random number generation for users who 1) use OpenSSL 1.0.0 or later, 2) set "HardwareAccel 1" in their torrc file, 3) have "Sandy Bridge" or "Ivy Bridge" Intel processors and 4) have no state file in their DataDirectory (as would happen on first start). Users who generated relay or hidden service identity keys in such a situation should discard them and generate new ones. No 2 is not the default configuration for openSUSE. [bnc#859421] [CVE-2013-7295] This release also fixes a logic error that caused Tor clients to build many more preemptive circuits than they actually need. - Major bugfixes: - Do not allow OpenSSL engines to replace the PRNG, even when HardwareAccel is set. The only default builtin PRNG engine uses the Intel RDRAND instruction to replace the entire PRNG, and ignores all attempts to seed it with more entropy. That's cryptographically stupid: the right response to a new alleged entropy source is never to discard all previously used entropy sources. Fixes bug 10402; works around behavior introduced in OpenSSL 1.0.0. - Fix assertion failure when AutomapHostsOnResolve yields an IPv6 address. - Avoid launching spurious extra circuits when a stream is pending. This fixes a bug where any circuit that _wasn't_ unusable for new streams would be treated as if it were, causing extra circuits to be launched. - Minor bugfixes: - Avoid a crash bug when starting with a corrupted microdescriptor cache file. - If we fail to dump a previously cached microdescriptor to disk, avoid freeing duplicate data later on. ------------------------------------------------------------------- Sat Dec 14 17:43:22 UTC 2013 - andreas.stieger@gmx.de - Tor 0.2.4.19, the first stable release in the 0.2.4 branch, features a new circuit handshake and link encryption that use ECC to provide better security and efficiency; makes relays better manage circuit creation requests; uses "directory guards" to reduce client enumeration risks; makes bridges collect and report statistics about the pluggable transports they support; cleans up and improves our geoip database; gets much closer to IPv6 support for clients, bridges, and relays; makes directory authorities use measured bandwidths rather than advertised ones when computing flags and thresholds; disables client-side DNS caching to reduce tracking risks; and fixes a big bug in bridge reachability testing. This release introduces two new design abstractions in the code: a new "channel" abstraction between circuits and or_connections to allow for implementing alternate relay-to-relay transports, and a new "circuitmux" abstraction storing the queue of circuits for a channel. The release also includes many stability, security, and privacy fixes. - full changelog relative to 0.2.3.x and 0.2.4.x RC series: https://gitweb.torproject.org/tor.git?a=blob_plain;hb=release-0.2.4;f=ReleaseNotes ------------------------------------------------------------------- Sat Dec 7 12:04:08 UTC 2013 - andreas.stieger@gmx.de - tor-0.2.4.18-rc, improves stability, performance, and better handling of edge cases. - Major features: - Re-enable TLS 1.1 and 1.2 when built with OpenSSL 1.0.1e or later. - Major bugfixes: - No longer stop reading or writing on cpuworker connections when our rate limiting buckets go empty. - If we are unable to save a microdescriptor to the journal, do not drop it from memory and then reattempt downloading it. - Stop trying to bootstrap all our directory information from only our first guard. - The new channel code sometimes lost track of in-progress circuits, causing long-running clients to stop building new circuits. ------------------------------------------------------------------- Sat Oct 5 13:18:55 UTC 2013 - andreas.stieger@gmx.de - tor-0.2.4.17-rc - major features in 0.2.4.x: - improved client resilience - support better link encryption with forward secrecy - new NTor circuit handshake - change relay queue for circuit create requests from size-based limit to time-based limit - many bug fixes and minor features ------------------------------------------------------------------- Fri May 24 22:51:24 UTC 2013 - andreas.stieger@gmx.de - add systemd support - verify source tarball signature ------------------------------------------------------------------- Tue Nov 27 21:46:02 UTC 2012 - andreas.stieger@gmx.de - update to 0.2.3.25, the first stable release in the 0.2.3 branch + significantly reduced directory overhead (via microdescriptors) + enormous crypto performance improvements for fast relays on new enough hardware + new v3 TLS handshake protocol that can better resist fingerprinting + support for protocol obfuscation plugins (pluggable transports) + better scalability for hidden services + IPv6 support for bridges + performance improvements + new "stream isolation" design to isolate different applications on different circuits + many stability, security, and privacy fixes + Complete list of changes enumerated in: https://lists.torproject.org/pipermail/tor-talk/2012-November/026554.html https://gitweb.torproject.org/tor.git/blob/267c0e5aa14deeb2ca0d7997b4ef5a5c2bbf5fd4:/ReleaseNotes + Tear down the circuit when receiving an unexpected SENDME cell. [bnc#791374] CVE-2012-5573 - build using --enable-bufferevents provided by Libevent 2.0.13 ------------------------------------------------------------------- Tue Nov 20 09:07:23 UTC 2012 - dimstar@opensuse.org - Fix useradd invocation: -o is useless without -u and newer versions of pwdutils/shadowutils fail on this now. ------------------------------------------------------------------- Sat Sep 15 14:08:49 UTC 2012 - andreas.stieger@gmx.de - update to 0.2.2.39 [bnc#780620] Changes in version 0.2.2.39 - 2012-09-11 Tor 0.2.2.39 fixes two more opportunities for remotely triggerable assertions. o Security fixes: - Fix an assertion failure in tor_timegm() that could be triggered by a badly formatted directory object. CVE-2012-4922 - Do not crash when comparing an address with port value 0 to an address policy. This bug could have been used to cause a remote assertion failure by or against directory authorities, or to allow some applications to crash clients. CVE-2012-4419 ------------------------------------------------------------------- Mon Aug 20 19:11:57 UTC 2012 - andreas.stieger@gmx.de - update to 0.2.2.38 [bnc#776642] Changes in version 0.2.2.38 - 2012-08-12 Tor 0.2.2.38 fixes a rare race condition that can crash exit relays; fixes a remotely triggerable crash bug; and fixes a timing attack that could in theory leak path information. o Security fixes: - Avoid read-from-freed-memory and double-free bugs that could occur when a DNS request fails while launching it. CVE-2012-3517 - Avoid an uninitialized memory read when reading a vote or consensus document that has an unrecognized flavor name. This read could lead to a remote crash bug. CVE-2012-3518 - Try to leak less information about what relays a client is choosing to a side-channel attacker. Previously, a Tor client would stop iterating through the list of available relays as soon as it had chosen one, thus finishing a little earlier when it picked a router earlier in the list. If an attacker can recover this timing information (nontrivial but not proven to be impossible), they could learn some coarse-grained information about which relays a client was picking (middle nodes in particular are likelier to be affected than exits). The timing attack might be mitigated by other factors, but it's best not to take chances. CVE-2012-3519 ------------------------------------------------------------------- Fri Jun 15 19:45:01 UTC 2012 - andreas.stieger@gmx.de - add tor-0.2.2.37-logrotate.patch : add su option to logrotate to fix W: suse-logrotate-user-writable-log-dir in Factory ------------------------------------------------------------------- Wed Jun 13 11:22:11 UTC 2012 - andreas.stieger@gmx.de - update to 0.2.2.37 Changes in version 0.2.2.37 - 2012-06-06 Tor 0.2.2.37 introduces a workaround for a critical renegotiation bug in OpenSSL 1.0.1 (where 20% of the Tor network can't talk to itself currently). o Major bugfixes: - Work around a bug in OpenSSL that broke renegotiation with TLS 1.1 and TLS 1.2. Without this workaround, all attempts to speak the v2 Tor connection protocol when both sides were using OpenSSL 1.0.1 would fail. Resolves ticket 6033. - When waiting for a client to renegotiate, don't allow it to add any bytes to the input buffer. This fixes a potential DoS issue. Fixes bugs 5934 and 6007; bugfix on 0.2.0.20-rc. - Fix an edge case where if we fetch or publish a hidden service descriptor, we might build a 4-hop circuit and then use that circuit for exiting afterwards -- even if the new last hop doesn't obey our ExitNodes config option. Fixes bug 5283; bugfix on 0.2.0.10-alpha. o Minor bugfixes: - Fix a build warning with Clang 3.1 related to our use of vasprintf. Fixes bug 5969. Bugfix on 0.2.2.11-alpha. o Minor features: - Tell GCC and Clang to check for any errors in format strings passed to the tor_v*(print|scan)f functions. ------------------------------------------------------------------- Wed Jun 6 20:46:46 UTC 2012 - andreas.stieger@gmx.de - update to 0.2.2.36 Changes in version 0.2.2.36 - 2012-05-24 o Directory authority changes: - Change IP address for maatuska (v3 directory authority). - Change IP address for ides (v3 directory authority), and rename it to turtles. o Security fixes: - When building or running with any version of OpenSSL earlier than 0.9.8s or 1.0.0f, disable SSLv3 support. These OpenSSL versions have a bug (CVE-2011-4576) in which their block cipher padding includes uninitialized data, potentially leaking sensitive information to any peer with whom they make a SSLv3 connection. Tor does not use SSL v3 by default, but a hostile client or server could force an SSLv3 connection in order to gain information that they shouldn't have been able to get. The best solution here is to upgrade to OpenSSL 0.9.8s or 1.0.0f (or later). But when building or running with a non-upgraded OpenSSL, we disable SSLv3 entirely to make sure that the bug can't happen. - Never use a bridge or a controller-supplied node as an exit, even if its exit policy allows it. Found by wanoskarnet. Fixes bug 5342. Bugfix on 0.1.1.15-rc (for controller-purpose descriptors) and 0.2.0.3-alpha (for bridge-purpose descriptors). - Only build circuits if we have a sufficient threshold of the total descriptors that are marked in the consensus with the "Exit" flag. This mitigates an attack proposed by wanoskarnet, in which all of a client's bridges collude to restrict the exit nodes that the client knows about. Fixes bug 5343. - Provide controllers with a safer way to implement the cookie authentication mechanism. With the old method, if another locally running program could convince a controller that it was the Tor process, then that program could trick the controller into telling it the contents of an arbitrary 32-byte file. The new "SAFECOOKIE" authentication method uses a challenge-response approach to prevent this attack. Fixes bug 5185; implements proposal 193. o Major bugfixes: - Avoid logging uninitialized data when unable to decode a hidden service descriptor cookie. Fixes bug 5647; bugfix on 0.2.1.5-alpha. - Avoid a client-side assertion failure when receiving an INTRODUCE2 cell on a general purpose circuit. Fixes bug 5644; bugfix on 0.2.1.6-alpha. - Fix builds when the path to sed, openssl, or sha1sum contains spaces, which is pretty common on Windows. Fixes bug 5065; bugfix on 0.2.2.1-alpha. - Correct our replacements for the timeradd() and timersub() functions on platforms that lack them (for example, Windows). The timersub() function is used when expiring circuits, while timeradd() is currently unused. Bug report and patch by Vektor. Fixes bug 4778; bugfix on 0.2.2.24-alpha. - Fix the SOCKET_OK test that we use to tell when socket creation fails so that it works on Win64. Fixes part of bug 4533; bugfix on 0.2.2.29-beta. Bug found by wanoskarnet. o Minor bugfixes: - Reject out-of-range times like 23:59:61 in parse_rfc1123_time(). Fixes bug 5346; bugfix on 0.0.8pre3. - Make our number-parsing functions always treat too-large values as an error, even when those values exceed the width of the underlying type. Previously, if the caller provided these functions with minima or maxima set to the extreme values of the underlying integer type, these functions would return those values on overflow rather than treating overflow as an error. Fixes part of bug 5786; bugfix on 0.0.9. - Older Linux kernels erroneously respond to strange nmap behavior by having accept() return successfully with a zero-length socket. When this happens, just close the connection. Previously, we would try harder to learn the remote address: but there was no such remote address to learn, and our method for trying to learn it was incorrect. Fixes bugs 1240, 4745, and 4747. Bugfix on 0.1.0.3-rc. Reported and diagnosed by "r1eo". - Correct parsing of certain date types in parse_http_time(). Without this patch, If-Modified-Since would behave incorrectly. Fixes bug 5346; bugfix on 0.2.0.2-alpha. Patch from Esteban Manchado Velázques. - Change the BridgePassword feature (part of the "bridge community" design, which is not yet implemented) to use a time-independent comparison. The old behavior might have allowed an adversary to use timing to guess the BridgePassword value. Fixes bug 5543; bugfix on 0.2.0.14-alpha. - Detect and reject certain misformed escape sequences in configuration values. Previously, these values would cause us to crash if received in a torrc file or over an authenticated control port. Bug found by Esteban Manchado Velázquez, and independently by Robert Connolly from Matta Consulting who further noted that it allows a post-authentication heap overflow. Patch by Alexander Schrijver. Fixes bugs 5090 and 5402 (CVE 2012-1668); bugfix on 0.2.0.16-alpha. - Fix a compile warning when using the --enable-openbsd-malloc configure option. Fixes bug 5340; bugfix on 0.2.0.20-rc. - During configure, detect when we're building with clang version 3.0 or lower and disable the -Wnormalized=id and -Woverride-init CFLAGS. clang doesn't support them yet. - When sending an HTTP/1.1 proxy request, include a Host header. Fixes bug 5593; bugfix on 0.2.2.1-alpha. - Fix a NULL-pointer dereference on a badly formed SETCIRCUITPURPOSE command. Found by mikeyc. Fixes bug 5796; bugfix on 0.2.2.9-alpha. - If we hit the error case where routerlist_insert() replaces an existing (old) server descriptor, make sure to remove that server descriptor from the old_routers list. Fix related to bug 1776. Bugfix on 0.2.2.18-alpha. o Minor bugfixes (documentation and log messages): - Fix a typo in a log message in rend_service_rendezvous_has_opened(). Fixes bug 4856; bugfix on Tor 0.0.6. - Update "ClientOnly" man page entry to explain that there isn't really any point to messing with it. Resolves ticket 5005. - Document the GiveGuardFlagTo_CVE_2011_2768_VulnerableRelays directory authority option (introduced in Tor 0.2.2.34). - Downgrade the "We're missing a certificate" message from notice to info: people kept mistaking it for a real problem, whereas it is seldom the problem even when we are failing to bootstrap. Fixes bug 5067; bugfix on 0.2.0.10-alpha. - Correctly spell "connect" in a log message on failure to create a controlsocket. Fixes bug 4803; bugfix on 0.2.2.26-beta. - Clarify the behavior of MaxCircuitDirtiness with hidden service circuits. Fixes issue 5259. o Minor features: - Directory authorities now reject versions of Tor older than 0.2.1.30, and Tor versions between 0.2.2.1-alpha and 0.2.2.20-alpha inclusive. These versions accounted for only a small fraction of the Tor network, and have numerous known security issues. Resolves issue 4788. - Update to the May 1 2012 Maxmind GeoLite Country database. - Feature removal: - When sending or relaying a RELAY_EARLY cell, we used to convert it to a RELAY cell if the connection was using the v1 link protocol. This was a workaround for older versions of Tor, which didn't handle RELAY_EARLY cells properly. Now that all supported versions can handle RELAY_EARLY cells, and now that we're enforcing the "no RELAY_EXTEND commands except in RELAY_EARLY cells" rule, remove this workaround. Addresses bug 4786. ------------------------------------------------------------------- Mon Jan 2 16:51:20 UTC 2012 - andreas.stieger@gmx.de - add CVE references in changelog, fixing bug #739133 ------------------------------------------------------------------- Fri Dec 16 20:37:05 UTC 2011 - andreas.stieger@gmx.de - update to upstream 0.2.2.35, which fixes a critical heap-overflow security issue: CVE-2011-2778 For a full list of changes, see: https://gitweb.torproject.org/tor.git/blob_plain/release-0.2.2:/ReleaseNotes ------------------------------------------------------------------ Mon Dec 12 15:42:09 UTC 2011 - cfarrell@suse.com - license update: BSD-3-Clause SPDX format ------------------------------------------------------------------- Sun Dec 11 18:42:57 UTC 2011 - andreas.stieger@gmx.de - fix factory warning by removing INSTALL file from docs dir ------------------------------------------------------------------- Sun Dec 11 17:11:11 UTC 2011 - andreas.stieger@gmx.de - format spec file to include copyright notice package is based on a former package in SUSE/openSUSE ------------------------------------------------------------------- Sun Dec 11 12:37:14 UTC 2011 - andreas.stieger@gmx.de - update license from "3-clause BSD" to "BSD3c" ------------------------------------------------------------------- Fri Oct 28 19:49:39 UTC 2011 - andreas.stieger@gmx.de - update to upstream 0.2.2.34 - fixes CVE-2011-4895 Tor Bridge circuit building information disclosure - fixes CVE-2011-4894 Tor DirPort information disclosure Changes in version 0.2.2.34 - 2011-10-26 Tor 0.2.2.34 fixes a critical anonymity vulnerability where an attacker can deanonymize Tor users. Everybody should upgrade. The attack relies on four components: 1) Clients reuse their TLS cert when talking to different relays, so relays can recognize a user by the identity key in her cert. 2) An attacker who knows the client's identity key can probe each guard relay to see if that identity key is connected to that guard relay right now. 3) A variety of active attacks in the literature (starting from "Low-Cost Traffic Analysis of Tor" by Murdoch and Danezis in 2005) allow a malicious website to discover the guard relays that a Tor user visiting the website is using. 4) Clients typically pick three guards at random, so the set of guards for a given user could well be a unique fingerprint for her. This release fixes components #1 and #2, which is enough to block the attack; the other two remain as open research problems. Special thanks to "frosty_un" for reporting the issue to us! Clients should upgrade so they are no longer recognizable by the TLS certs they present. Relays should upgrade so they no longer allow a remote attacker to probe them to test whether unpatched clients are currently connected to them. This release also fixes several vulnerabilities that allow an attacker to enumerate bridge relays. Some bridge enumeration attacks still remain; see for example proposal 188. o Privacy/anonymity fixes (clients): - Clients and bridges no longer send TLS certificate chains on outgoing OR connections. Previously, each client or bridge would use the same cert chain for all outgoing OR connections until its IP address changes, which allowed any relay that the client or bridge contacted to determine which entry guards it is using. Fixes CVE-2011-2768. Bugfix on 0.0.9pre5; found by "frosty_un". - If a relay receives a CREATE_FAST cell on a TLS connection, it no longer considers that connection as suitable for satisfying a circuit EXTEND request. Now relays can protect clients from the CVE-2011-2768 issue even if the clients haven't upgraded yet. - Directory authorities no longer assign the Guard flag to relays that haven't upgraded to the above "refuse EXTEND requests to client connections" fix. Now directory authorities can protect clients from the CVE-2011-2768 issue even if neither the clients nor the relays have upgraded yet. There's a new "GiveGuardFlagTo_CVE_2011_2768_VulnerableRelays" config option to let us transition smoothly, else tomorrow there would be no guard relays. o Privacy/anonymity fixes (bridge enumeration): - Bridge relays now do their directory fetches inside Tor TLS connections, like all the other clients do, rather than connecting directly to the DirPort like public relays do. Removes another avenue for enumerating bridges. Fixes bug 4115; bugfix on 0.2.0.35. - Bridges relays now build circuits for themselves in a more similar way to how clients build them. Removes another avenue for enumerating bridges. Fixes bug 4124; bugfix on 0.2.0.3-alpha, when bridges were introduced. - Bridges now refuse CREATE or CREATE_FAST cells on OR connections that they initiated. Relays could distinguish incoming bridge connections from client connections, creating another avenue for enumerating bridges. Fixes CVE-2011-2769. Bugfix on 0.2.0.3-alpha. Found by "frosty_un". o Major bugfixes: - Fix a crash bug when changing node restrictions while a DNS lookup is in-progress. Fixes bug 4259; bugfix on 0.2.2.25-alpha. Bugfix by "Tey'". - Don't launch a useless circuit after failing to use one of a hidden service's introduction points. Previously, we would launch a new introduction circuit, but not set the hidden service which that circuit was intended to connect to, so it would never actually be used. A different piece of code would then create a new introduction circuit correctly. Bug reported by katmagic and found by Sebastian Hahn. Bugfix on 0.2.1.13-alpha; fixes bug 4212. o Minor bugfixes: - Change an integer overflow check in the OpenBSD_Malloc code so that GCC is less likely to eliminate it as impossible. Patch from Mansour Moufid. Fixes bug 4059. - When a hidden service turns an extra service-side introduction circuit into a general-purpose circuit, free the rend_data and intro_key fields first, so we won't leak memory if the circuit is cannibalized for use as another service-side introduction circuit. Bugfix on 0.2.1.7-alpha; fixes bug 4251. - Bridges now skip DNS self-tests, to act a little more stealthily. Fixes bug 4201; bugfix on 0.2.0.3-alpha, which first introduced bridges. Patch by "warms0x". - Fix internal bug-checking logic that was supposed to catch failures in digest generation so that it will fail more robustly if we ask for a nonexistent algorithm. Found by Coverity Scan. Bugfix on 0.2.2.1-alpha; fixes Coverity CID 479. - Report any failure in init_keys() calls launched because our IP address has changed. Spotted by Coverity Scan. Bugfix on 0.1.1.4-alpha; fixes CID 484. o Minor bugfixes (log messages and documentation): - Remove a confusing dollar sign from the example fingerprint in the man page, and also make the example fingerprint a valid one. Fixes bug 4309; bugfix on 0.2.1.3-alpha. - The next version of Windows will be called Windows 8, and it has a major version of 6, minor version of 2. Correctly identify that version instead of calling it "Very recent version". Resolves ticket 4153; reported by funkstar. - Downgrade log messages about circuit timeout calibration from "notice" to "info": they don't require or suggest any human intervention. Patch from Tom Lowenthal. Fixes bug 4063; bugfix on 0.2.2.14-alpha. o Minor features: - Turn on directory request statistics by default and include them in extra-info descriptors. Don't break if we have no GeoIP database. Backported from 0.2.3.1-alpha; implements ticket 3951. - Update to the October 4 2011 Maxmind GeoLite Country database. ------------------------------------------------------------------- Tue Sep 20 20:58:56 UTC 2011 - andreas.stieger@gmx.de - update to upstream 0.2.2.33 Changes in version 0.2.2.33 - 2011-09-13 Tor 0.2.2.33 fixes several bugs, and includes a slight tweak to Tor's TLS handshake that makes relays and bridges that run this new version reachable from Iran again. o Major bugfixes: - Avoid an assertion failure when reloading a configuration with TrackExitHosts changes. Found and fixed by 'laruldan'. Fixes bug 3923; bugfix on 0.2.2.25-alpha. o Minor features (security): - Check for replays of the public-key encrypted portion of an INTRODUCE1 cell, in addition to the current check for replays of the g^x value. This prevents a possible class of active attacks by an attacker who controls both an introduction point and a rendezvous point, and who uses the malleability of AES-CTR to alter the encrypted g^x portion of the INTRODUCE1 cell. We think that these attacks are infeasible (requiring the attacker to send on the order of zettabytes of altered cells in a short interval), but we'd rather block them off in case there are any classes of this attack that we missed. Reported by Willem Pinckaers. o Minor features: - Adjust the expiration time on our SSL session certificates to better match SSL certs seen in the wild. Resolves ticket 4014. - Change the default required uptime for a relay to be accepted as a HSDir (hidden service directory) from 24 hours to 25 hours. Improves on 0.2.0.10-alpha; resolves ticket 2649. - Add a VoteOnHidServDirectoriesV2 config option to allow directory authorities to abstain from voting on assignment of the HSDir consensus flag. Related to bug 2649. - Update to the September 6 2011 Maxmind GeoLite Country database. o Minor bugfixes (documentation and log messages): - Correct the man page to explain that HashedControlPassword and CookieAuthentication can both be set, in which case either method is sufficient to authenticate to Tor. Bugfix on 0.2.0.7-alpha, when we decided to allow these config options to both be set. Issue raised by bug 3898. - Demote the 'replay detected' log message emitted when a hidden service receives the same Diffie-Hellman public key in two different INTRODUCE2 cells to info level. A normal Tor client can cause that log message during its normal operation. Bugfix on 0.2.1.6-alpha; fixes part of bug 2442. - Demote the 'INTRODUCE2 cell is too {old,new}' log message to info level. There is nothing that a hidden service's operator can do to fix its clients' clocks. Bugfix on 0.2.1.6-alpha; fixes part of bug 2442. - Clarify a log message specifying the characters permitted in HiddenServiceAuthorizeClient client names. Previously, the log message said that "[A-Za-z0-9+-_]" were permitted; that could have given the impression that every ASCII character between "+" and "_" was permitted. Now we say "[A-Za-z0-9+_-]". Bugfix on 0.2.1.5-alpha. o Build fixes: - Provide a substitute implementation of lround() for MSVC, which apparently lacks it. Patch from Gisle Vanem. - Clean up some code issues that prevented Tor from building on older BSDs. Fixes bug 3894; reported by "grarpamp". - Search for a platform-specific version of "ar" when cross-compiling. Should fix builds on iOS. Resolves bug 3909, found by Marco Bonetti. ------------------------------------------------------------------- Fri Sep 2 19:55:23 UTC 2011 - andreas.stieger@gmx.de - updated ot upstream 0.2.2.32 - removed tor_initscript.patch - fixes CVE-2011-4897 Tor Nickname information disclosure - fixes CVE-2011-4896 Tor Bridge information disclosure Changes in version 0.2.2.32 - 2011-08-27 The Tor 0.2.2 release series is dedicated to the memory of Andreas Pfitzmann (1958-2010), a pioneer in anonymity and privacy research, a founder of the PETS community, a leader in our field, a mentor, and a friend. He left us with these words: "I had the possibility to contribute to this world that is not as it should be. I hope I could help in some areas to make the world a better place, and that I could also encourage other people to be engaged in improving the world. Please, stay engaged. This world needs you, your love, your initiative -- now I cannot be part of that anymore." Tor 0.2.2.32, the first stable release in the 0.2.2 branch, is finally ready. More than two years in the making, this release features improved client performance and hidden service reliability, better compatibility for Android, correct behavior for bridges that listen on more than one address, more extensible and flexible directory object handling, better reporting of network statistics, improved code security, and many many other features and bugfixes. o Major features (client performance): - When choosing which cells to relay first, relays now favor circuits that have been quiet recently, to provide lower latency for low-volume circuits. By default, relays enable or disable this feature based on a setting in the consensus. They can override this default by using the new "CircuitPriorityHalflife" config option. Design and code by Ian Goldberg, Can Tang, and Chris Alexander. - Directory authorities now compute consensus weightings that instruct clients how to weight relays flagged as Guard, Exit, Guard+Exit, and no flag. Clients use these weightings to distribute network load more evenly across these different relay types. The weightings are in the consensus so we can change them globally in the future. Extra thanks to "outofwords" for finding some nasty security bugs in the first implementation of this feature. o Major features (client performance, circuit build timeout): - Tor now tracks how long it takes to build client-side circuits over time, and adapts its timeout to local network performance. Since a circuit that takes a long time to build will also provide bad performance, we get significant latency improvements by discarding the slowest 20% of circuits. Specifically, Tor creates circuits more aggressively than usual until it has enough data points for a good timeout estimate. Implements proposal 151. - Circuit build timeout constants can be controlled by consensus parameters. We set good defaults for these parameters based on experimentation on broadband and simulated high-latency links. - Circuit build time learning can be disabled via consensus parameter or by the client via a LearnCircuitBuildTimeout config option. We also automatically disable circuit build time calculation if either AuthoritativeDirectory is set, or if we fail to write our state file. Implements ticket 1296. o Major features (relays use their capacity better): - Set SO_REUSEADDR socket option on all sockets, not just listeners. This should help busy exit nodes avoid running out of useable ports just because all the ports have been used in the near past. Resolves issue 2850. - Relays now save observed peak bandwidth throughput rates to their state file (along with total usage, which was already saved), so that they can determine their correct estimated bandwidth on restart. Resolves bug 1863, where Tor relays would reset their estimated bandwidth to 0 after restarting. - Lower the maximum weighted-fractional-uptime cutoff to 98%. This should give us approximately 40-50% more Guard-flagged nodes, improving the anonymity the Tor network can provide and also decreasing the dropoff in throughput that relays experience when they first get the Guard flag. - Directory authorities now take changes in router IP address and ORPort into account when determining router stability. Previously, if a router changed its IP or ORPort, the authorities would not treat it as having any downtime for the purposes of stability calculation, whereas clients would experience downtime since the change would take a while to propagate to them. Resolves issue 1035. - New AccelName and AccelDir options add support for dynamic OpenSSL hardware crypto acceleration engines. o Major features (relays control their load better): - Exit relays now try harder to block exit attempts from unknown relays, to make it harder for people to use them as one-hop proxies a la tortunnel. Controlled by the refuseunknownexits consensus parameter (currently enabled), or you can override it on your relay with the RefuseUnknownExits torrc option. Resolves bug 1751; based on a variant of proposal 163. - Add separate per-conn write limiting to go with the per-conn read limiting. We added a global write limit in Tor 0.1.2.5-alpha, but never per-conn write limits. - New consensus params "bwconnrate" and "bwconnburst" to let us rate-limit client connections as they enter the network. It's controlled in the consensus so we can turn it on and off for experiments. It's starting out off. Based on proposal 163. o Major features (controllers): - Export GeoIP information on bridge usage to controllers even if we have not yet been running for 24 hours. Now Vidalia bridge operators can get more accurate and immediate feedback about their contributions to the network. - Add an __OwningControllerProcess configuration option and a TAKEOWNERSHIP control-port command. Now a Tor controller can ensure that when it exits, Tor will shut down. Implements feature 3049. o Major features (directory authorities): - Directory authorities now create, vote on, and serve multiple parallel formats of directory data as part of their voting process. Partially implements Proposal 162: "Publish the consensus in multiple flavors". - Directory authorities now agree on and publish small summaries of router information that clients can use in place of regular server descriptors. This transition will allow Tor 0.2.3 clients to use far less bandwidth for downloading information about the network. Begins the implementation of Proposal 158: "Clients download consensus + microdescriptors". - The directory voting system is now extensible to use multiple hash algorithms for signatures and resource selection. Newer formats are signed with SHA256, with a possibility for moving to a better hash algorithm in the future. - Directory authorities can now vote on arbitary integer values as part of the consensus process. This is designed to help set network-wide parameters. Implements proposal 167. o Major features and bugfixes (node selection): - Revise and reconcile the meaning of the ExitNodes, EntryNodes, ExcludeEntryNodes, ExcludeExitNodes, ExcludeNodes, and Strict*Nodes options. Previously, we had been ambiguous in describing what counted as an "exit" node, and what operations exactly "StrictNodes 0" would permit. This created confusion when people saw nodes built through unexpected circuits, and made it hard to tell real bugs from surprises. Now the intended behavior is: . "Exit", in the context of ExitNodes and ExcludeExitNodes, means a node that delivers user traffic outside the Tor network. . "Entry", in the context of EntryNodes, means a node used as the first hop of a multihop circuit. It doesn't include direct connections to directory servers. . "ExcludeNodes" applies to all nodes. . "StrictNodes" changes the behavior of ExcludeNodes only. When StrictNodes is set, Tor should avoid all nodes listed in ExcludeNodes, even when it will make user requests fail. When StrictNodes is *not* set, then Tor should follow ExcludeNodes whenever it can, except when it must use an excluded node to perform self-tests, connect to a hidden service, provide a hidden service, fulfill a .exit request, upload directory information, or fetch directory information. Collectively, the changes to implement the behavior fix bug 1090. - If EntryNodes, ExitNodes, ExcludeNodes, or ExcludeExitNodes change during a config reload, mark and discard all our origin circuits. This fix should address edge cases where we change the config options and but then choose a circuit that we created before the change. - Make EntryNodes config option much more aggressive even when StrictNodes is not set. Before it would prepend your requested entrynodes to your list of guard nodes, but feel free to use others after that. Now it chooses only from your EntryNodes if any of those are available, and only falls back to others if a) they're all down and b) StrictNodes is not set. - Now we refresh your entry guards from EntryNodes at each consensus fetch -- rather than just at startup and then they slowly rot as the network changes. - Add support for the country code "{??}" in torrc options like ExcludeNodes, to indicate all routers of unknown country. Closes bug 1094. - ExcludeNodes now takes precedence over EntryNodes and ExitNodes: if a node is listed in both, it's treated as excluded. - ExcludeNodes now applies to directory nodes -- as a preference if StrictNodes is 0, or an absolute requirement if StrictNodes is 1. Don't exclude all the directory authorities and set StrictNodes to 1 unless you really want your Tor to break. - ExcludeNodes and ExcludeExitNodes now override exit enclaving. - ExcludeExitNodes now overrides .exit requests. - We don't use bridges listed in ExcludeNodes. - When StrictNodes is 1: . We now apply ExcludeNodes to hidden service introduction points and to rendezvous points selected by hidden service users. This can make your hidden service less reliable: use it with caution! . If we have used ExcludeNodes on ourself, do not try relay reachability self-tests. . If we have excluded all the directory authorities, we will not even try to upload our descriptor if we're a relay. . Do not honor .exit requests to an excluded node. - When the set of permitted nodes changes, we now remove any mappings introduced via TrackExitHosts to now-excluded nodes. Bugfix on 0.1.0.1-rc. - We never cannibalize a circuit that had excluded nodes on it, even if StrictNodes is 0. Bugfix on 0.1.0.1-rc. - Improve log messages related to excluded nodes. o Major features (misc): - Numerous changes, bugfixes, and workarounds from Nathan Freitas to help Tor build correctly for Android phones. - The options SocksPort, ControlPort, and so on now all accept a value "auto" that opens a socket on an OS-selected port. A new ControlPortWriteToFile option tells Tor to write its actual control port or ports to a chosen file. If the option ControlPortFileGroupReadable is set, the file is created as group-readable. Now users can run two Tor clients on the same system without needing to manually mess with parameters. Resolves part of ticket 3076. - Tor now supports tunneling all of its outgoing connections over a SOCKS proxy, using the SOCKS4Proxy and/or SOCKS5Proxy configuration options. Code by Christopher Davis. o Code security improvements: - Replace all potentially sensitive memory comparison operations with versions whose runtime does not depend on the data being compared. This will help resist a class of attacks where an adversary can use variations in timing information to learn sensitive data. Fix for one case of bug 3122. (Safe memcmp implementation by Robert Ransom based partially on code by DJB.) - Enable Address Space Layout Randomization (ASLR) and Data Execution Prevention (DEP) by default on Windows to make it harder for attackers to exploit vulnerabilities. Patch from John Brooks. - New "--enable-gcc-hardening" ./configure flag (off by default) to turn on gcc compile time hardening options. It ensures that signed ints have defined behavior (-fwrapv), enables -D_FORTIFY_SOURCE=2 (requiring -O2), adds stack smashing protection with canaries (-fstack-protector-all), turns on ASLR protection if supported by the kernel (-fPIE, -pie), and adds additional security related warnings. Verified to work on Mac OS X and Debian Lenny. - New "--enable-linker-hardening" ./configure flag (off by default) to turn on ELF specific hardening features (relro, now). This does not work with Mac OS X or any other non-ELF binary format. - Always search the Windows system directory for system DLLs, and nowhere else. Bugfix on 0.1.1.23; fixes bug 1954. - New DisableAllSwap option. If set to 1, Tor will attempt to lock all current and future memory pages via mlockall(). On supported platforms (modern Linux and probably BSD but not Windows or OS X), this should effectively disable any and all attempts to page out memory. This option requires that you start your Tor as root -- if you use DisableAllSwap, please consider using the User option to properly reduce the privileges of your Tor. o Major bugfixes (crashes): - Fix crash bug on platforms where gmtime and localtime can return NULL. Windows 7 users were running into this one. Fixes part of bug 2077. Bugfix on all versions of Tor. Found by boboper. - Introduce minimum/maximum values that clients will believe from the consensus. Now we'll have a better chance to avoid crashes or worse when a consensus param has a weird value. - Fix a rare crash bug that could occur when a client was configured with a large number of bridges. Fixes bug 2629; bugfix on 0.2.1.2-alpha. Bugfix by trac user "shitlei". - Do not crash when our configuration file becomes unreadable, for example due to a permissions change, between when we start up and when a controller calls SAVECONF. Fixes bug 3135; bugfix on 0.0.9pre6. - If we're in the pathological case where there's no exit bandwidth but there is non-exit bandwidth, or no guard bandwidth but there is non-guard bandwidth, don't crash during path selection. Bugfix on 0.2.0.3-alpha. - Fix a crash bug when trying to initialize the evdns module in Libevent 2. Bugfix on 0.2.1.16-rc. o Major bugfixes (stability): - Fix an assert in parsing router descriptors containing IPv6 addresses. This one took down the directory authorities when somebody tried some experimental code. Bugfix on 0.2.1.3-alpha. - Fix an uncommon assertion failure when running with DNSPort under heavy load. Fixes bug 2933; bugfix on 0.2.0.1-alpha. - Treat an unset $HOME like an empty $HOME rather than triggering an assert. Bugfix on 0.0.8pre1; fixes bug 1522. - More gracefully handle corrupt state files, removing asserts in favor of saving a backup and resetting state. - Instead of giving an assertion failure on an internal mismatch on estimated freelist size, just log a BUG warning and try later. Mitigates but does not fix bug 1125. - Fix an assert that got triggered when using the TestingTorNetwork configuration option and then issuing a GETINFO config-text control command. Fixes bug 2250; bugfix on 0.2.1.2-alpha. - If the cached cert file is unparseable, warn but don't exit. o Privacy fixes (relays/bridges): - Don't list Windows capabilities in relay descriptors. We never made use of them, and maybe it's a bad idea to publish them. Bugfix on 0.1.1.8-alpha. - If the Nickname configuration option isn't given, Tor would pick a nickname based on the local hostname as the nickname for a relay. Because nicknames are not very important in today's Tor and the "Unnamed" nickname has been implemented, this is now problematic behavior: It leaks information about the hostname without being useful at all. Fixes bug 2979; bugfix on 0.1.2.2-alpha, which introduced the Unnamed nickname. Reported by tagnaq. - Maintain separate TLS contexts and certificates for incoming and outgoing connections in bridge relays. Previously we would use the same TLS contexts and certs for incoming and outgoing connections. Bugfix on 0.2.0.3-alpha; addresses bug 988. - Maintain separate identity keys for incoming and outgoing TLS contexts in bridge relays. Previously we would use the same identity keys for incoming and outgoing TLS contexts. Bugfix on 0.2.0.3-alpha; addresses the other half of bug 988. - Make the bridge directory authority refuse to answer directory requests for "all descriptors". It used to include bridge descriptors in its answer, which was a major information leak. Found by "piebeer". Bugfix on 0.2.0.3-alpha. o Privacy fixes (clients): - When receiving a hidden service descriptor, check that it is for the hidden service we wanted. Previously, Tor would store any hidden service descriptors that a directory gave it, whether it wanted them or not. This wouldn't have let an attacker impersonate a hidden service, but it did let directories pre-seed a client with descriptors that it didn't want. Bugfix on 0.0.6. - Start the process of disabling ".exit" address notation, since it can be used for a variety of esoteric application-level attacks on users. To reenable it, set "AllowDotExit 1" in your torrc. Fix on 0.0.9rc5. - Reject attempts at the client side to open connections to private IP addresses (like 127.0.0.1, 10.0.0.1, and so on) with a randomly chosen exit node. Attempts to do so are always ill-defined, generally prevented by exit policies, and usually in error. This will also help to detect loops in transparent proxy configurations. You can disable this feature by setting "ClientRejectInternalAddresses 0" in your torrc. - Log a notice when we get a new control connection. Now it's easier for security-conscious users to recognize when a local application is knocking on their controller door. Suggested by bug 1196. o Privacy fixes (newnym): - Avoid linkability based on cached hidden service descriptors: forget all hidden service descriptors cached as a client when processing a SIGNAL NEWNYM command. Fixes bug 3000; bugfix on 0.0.6. - On SIGHUP, do not clear out all TrackHostExits mappings, client DNS cache entries, and virtual address mappings: that's what NEWNYM is for. Fixes bug 1345; bugfix on 0.1.0.1-rc. - Don't attach new streams to old rendezvous circuits after SIGNAL NEWNYM. Previously, we would keep using an existing rendezvous circuit if it remained open (i.e. if it were kept open by a long-lived stream, or if a new stream were attached to it before Tor could notice that it was old and no longer in use). Bugfix on 0.1.1.15-rc; fixes bug 3375. o Major bugfixes (relay bandwidth accounting): - Fix a bug that could break accounting on 64-bit systems with large time_t values, making them hibernate for impossibly long intervals. Fixes bug 2146. Bugfix on 0.0.9pre6; fix by boboper. - Fix a bug in bandwidth accounting that could make us use twice the intended bandwidth when our interval start changes due to daylight saving time. Now we tolerate skew in stored vs computed interval starts: if the start of the period changes by no more than 50% of the period's duration, we remember bytes that we transferred in the old period. Fixes bug 1511; bugfix on 0.0.9pre5. o Major bugfixes (bridges): - Bridges now use "reject *:*" as their default exit policy. Bugfix on 0.2.0.3-alpha. Fixes bug 1113. - If you configure your bridge with a known identity fingerprint, and the bridge authority is unreachable (as it is in at least one country now), fall back to directly requesting the descriptor from the bridge. Finishes the feature started in 0.2.0.10-alpha; closes bug 1138. - Fix a bug where bridge users who configure the non-canonical address of a bridge automatically switch to its canonical address. If a bridge listens at more than one address, it should be able to advertise those addresses independently and any non-blocked addresses should continue to work. Bugfix on Tor 0.2.0.3-alpha. Fixes bug 2510. - If you configure Tor to use bridge A, and then quit and configure Tor to use bridge B instead (or if you change Tor to use bridge B via the controller), it would happily continue to use bridge A if it's still reachable. While this behavior is a feature if your goal is connectivity, in some scenarios it's a dangerous bug. Bugfix on Tor 0.2.0.1-alpha; fixes bug 2511. - When the controller configures a new bridge, don't wait 10 to 60 seconds before trying to fetch its descriptor. Bugfix on 0.2.0.3-alpha; fixes bug 3198 (suggested by 2355). o Major bugfixes (directory authorities): - Many relays have been falling out of the consensus lately because not enough authorities know about their descriptor for them to get a majority of votes. When we deprecated the v2 directory protocol, we got rid of the only way that v3 authorities can hear from each other about other descriptors. Now authorities examine every v3 vote for new descriptors, and fetch them from that authority. Bugfix on 0.2.1.23. - Authorities could be tricked into giving out the Exit flag to relays that didn't allow exiting to any ports. This bug could screw with load balancing and stats. Bugfix on 0.1.1.6-alpha; fixes bug 1238. Bug discovered by Martin Kowalczyk. - If all authorities restart at once right before a consensus vote, nobody will vote about "Running", and clients will get a consensus with no usable relays. Instead, authorities refuse to build a consensus if this happens. Bugfix on 0.2.0.10-alpha; fixes bug 1066. o Major bugfixes (stream-level fairness): - When receiving a circuit-level SENDME for a blocked circuit, try to package cells fairly from all the streams that had previously been blocked on that circuit. Previously, we had started with the oldest stream, and allowed each stream to potentially exhaust the circuit's package window. This gave older streams on any given circuit priority over newer ones. Fixes bug 1937. Detected originally by Camilo Viecco. This bug was introduced before the first Tor release, in svn commit r152: it is the new winner of the longest-lived bug prize. - Fix a stream fairness bug that would cause newer streams on a given circuit to get preference when reading bytes from the origin or destination. Fixes bug 2210. Fix by Mashael AlSabah. This bug was introduced before the first Tor release, in svn revision r152. - When the exit relay got a circuit-level sendme cell, it started reading on the exit streams, even if had 500 cells queued in the circuit queue already, so the circuit queue just grew and grew in some cases. We fix this by not re-enabling reading on receipt of a sendme cell when the cell queue is blocked. Fixes bug 1653. Bugfix on 0.2.0.1-alpha. Detected by Mashael AlSabah. Original patch by "yetonetime". - Newly created streams were allowed to read cells onto circuits, even if the circuit's cell queue was blocked and waiting to drain. This created potential unfairness, as older streams would be blocked, but newer streams would gladly fill the queue completely. We add code to detect this situation and prevent any stream from getting more than one free cell. Bugfix on 0.2.0.1-alpha. Partially fixes bug 1298. o Major bugfixes (hidden services): - Apply circuit timeouts to opened hidden-service-related circuits based on the correct start time. Previously, we would apply the circuit build timeout based on time since the circuit's creation; it was supposed to be applied based on time since the circuit entered its current state. Bugfix on 0.0.6; fixes part of bug 1297. - Improve hidden service robustness: When we find that we have extended a hidden service's introduction circuit to a relay not listed as an introduction point in the HS descriptor we currently have, retry with an introduction point from the current descriptor. Previously we would just give up. Fixes bugs 1024 and 1930; bugfix on 0.2.0.10-alpha. - Directory authorities now use data collected from their own uptime observations when choosing whether to assign the HSDir flag to relays, instead of trusting the uptime value the relay reports in its descriptor. This change helps prevent an attack where a small set of nodes with frequently-changing identity keys can blackhole a hidden service. (Only authorities need upgrade; others will be fine once they do.) Bugfix on 0.2.0.10-alpha; fixes bug 2709. - Stop assigning the HSDir flag to relays that disable their DirPort (and thus will refuse to answer directory requests). This fix should dramatically improve the reachability of hidden services: hidden services and hidden service clients pick six HSDir relays to store and retrieve the hidden service descriptor, and currently about half of the HSDir relays will refuse to work. Bugfix on 0.2.0.10-alpha; fixes part of bug 1693. o Major bugfixes (misc): - Clients now stop trying to use an exit node associated with a given destination by TrackHostExits if they fail to reach that exit node. Fixes bug 2999. Bugfix on 0.2.0.20-rc. - Fix a regression that caused Tor to rebind its ports if it receives SIGHUP while hibernating. Bugfix in 0.1.1.6-alpha; closes bug 919. - Remove an extra pair of quotation marks around the error message in control-port STATUS_GENERAL BUG events. Bugfix on 0.1.2.6-alpha; fixes bug 3732. o Minor features (relays): - Ensure that no empty [dirreq-](read|write)-history lines are added to an extrainfo document. Implements ticket 2497. - When bandwidth accounting is enabled, be more generous with how much bandwidth we'll use up before entering "soft hibernation". Previously, we'd refuse new connections and circuits once we'd used up 95% of our allotment. Now, we use up 95% of our allotment, AND make sure that we have no more than 500MB (or 3 hours of expected traffic, whichever is lower) remaining before we enter soft hibernation. - Relays now log the reason for publishing a new relay descriptor, so we have a better chance of hunting down instances of bug 1810. Resolves ticket 3252. - Log a little more clearly about the times at which we're no longer accepting new connections (e.g. due to hibernating). Resolves bug 2181. - When AllowSingleHopExits is set, print a warning to explain to the relay operator why most clients are avoiding her relay. - Send END_STREAM_REASON_NOROUTE in response to EHOSTUNREACH errors. Clients before 0.2.1.27 didn't handle NOROUTE correctly, but such clients are already deprecated because of security bugs. o Minor features (network statistics): - Directory mirrors that set "DirReqStatistics 1" write statistics about directory requests to disk every 24 hours. As compared to the "--enable-geoip-stats" ./configure flag in 0.2.1.x, there are a few improvements: 1) stats are written to disk exactly every 24 hours; 2) estimated shares of v2 and v3 requests are determined as mean values, not at the end of a measurement period; 3) unresolved requests are listed with country code '??'; 4) directories also measure download times. - Exit nodes that set "ExitPortStatistics 1" write statistics on the number of exit streams and transferred bytes per port to disk every 24 hours. - Relays that set "CellStatistics 1" write statistics on how long cells spend in their circuit queues to disk every 24 hours. - Entry nodes that set "EntryStatistics 1" write statistics on the rough number and origins of connecting clients to disk every 24 hours. - Relays that write any of the above statistics to disk and set "ExtraInfoStatistics 1" include the past 24 hours of statistics in their extra-info documents. Implements proposal 166. o Minor features (GeoIP and statistics): - Provide a log message stating which geoip file we're parsing instead of just stating that we're parsing the geoip file. Implements ticket 2432. - Make sure every relay writes a state file at least every 12 hours. Previously, a relay could go for weeks without writing its state file, and on a crash could lose its bandwidth history, capacity estimates, client country statistics, and so on. Addresses bug 3012. - Relays report the number of bytes spent on answering directory requests in extra-info descriptors similar to {read,write}-history. Implements enhancement 1790. - Report only the top 10 ports in exit-port stats in order not to exceed the maximum extra-info descriptor length of 50 KB. Implements task 2196. - If writing the state file to disk fails, wait up to an hour before retrying again, rather than trying again each second. Fixes bug 2346; bugfix on Tor 0.1.1.3-alpha. - Delay geoip stats collection by bridges for 6 hours, not 2 hours, when we switch from being a public relay to a bridge. Otherwise there will still be clients that see the relay in their consensus, and the stats will end up wrong. Bugfix on 0.2.1.15-rc; fixes bug 932. - Update to the August 2 2011 Maxmind GeoLite Country database. o Minor features (clients): - When expiring circuits, use microsecond timers rather than one-second timers. This can avoid an unpleasant situation where a circuit is launched near the end of one second and expired right near the beginning of the next, and prevent fluctuations in circuit timeout values. - If we've configured EntryNodes and our network goes away and/or all our entrynodes get marked down, optimistically retry them all when a new socks application request appears. Fixes bug 1882. - Always perform router selections using weighted relay bandwidth, even if we don't need a high capacity circuit at the time. Non-fast circuits now only differ from fast ones in that they can use relays not marked with the Fast flag. This "feature" could turn out to be a horrible bug; we should investigate more before it goes into a stable release. - When we run out of directory information such that we can't build circuits, but then get enough that we can build circuits, log when we actually construct a circuit, so the user has a better chance of knowing what's going on. Fixes bug 1362. - Log SSL state transitions at debug level during handshake, and include SSL states in error messages. This may help debug future SSL handshake issues. o Minor features (directory authorities): - When a router changes IP address or port, authorities now launch a new reachability test for it. Implements ticket 1899. - Directory authorities now reject relays running any versions of Tor between 0.2.1.3-alpha and 0.2.1.18 inclusive; they have known bugs that keep RELAY_EARLY cells from working on rendezvous circuits. Followup to fix for bug 2081. - Directory authorities now reject relays running any version of Tor older than 0.2.0.26-rc. That version is the earliest that fetches current directory information correctly. Fixes bug 2156. - Directory authorities now do an immediate reachability check as soon as they hear about a new relay. This change should slightly reduce the time between setting up a relay and getting listed as running in the consensus. It should also improve the time between setting up a bridge and seeing use by bridge users. - Directory authorities no longer launch a TLS connection to every relay as they startup. Now that we have 2k+ descriptors cached, the resulting network hiccup is becoming a burden. Besides, authorities already avoid voting about Running for the first half hour of their uptime. - Directory authorities now log the source of a rejected POSTed v3 networkstatus vote, so we can track failures better. - Backport code from 0.2.3.x that allows directory authorities to clean their microdescriptor caches. Needed to resolve bug 2230. o Minor features (hidden services): - Use computed circuit-build timeouts to decide when to launch parallel introduction circuits for hidden services. (Previously, we would retry after 15 seconds.) - Don't allow v0 hidden service authorities to act as clients. Required by fix for bug 3000. - Ignore SIGNAL NEWNYM commands on relay-only Tor instances. Required by fix for bug 3000. - Make hidden services work better in private Tor networks by not requiring any uptime to join the hidden service descriptor DHT. Implements ticket 2088. - Log (at info level) when purging pieces of hidden-service-client state because of SIGNAL NEWNYM. o Minor features (controller interface): - New "GETINFO net/listeners/(type)" controller command to return a list of addresses and ports that are bound for listeners for a given connection type. This is useful when the user has configured "SocksPort auto" and the controller needs to know which port got chosen. Resolves another part of ticket 3076. - Have the controller interface give a more useful message than "Internal Error" in response to failed GETINFO requests. - Add a TIMEOUT_RATE keyword to the BUILDTIMEOUT_SET control port event, to give information on the current rate of circuit timeouts over our stored history. - The 'EXTENDCIRCUIT' control port command can now be used with a circ id of 0 and no path. This feature will cause Tor to build a new 'fast' general purpose circuit using its own path selection algorithms. - Added a BUILDTIMEOUT_SET controller event to describe changes to the circuit build timeout. - New controller command "getinfo config-text". It returns the contents that Tor would write if you send it a SAVECONF command, so the controller can write the file to disk itself. o Minor features (controller protocol): - Add a new ControlSocketsGroupWritable configuration option: when it is turned on, ControlSockets are group-writeable by the default group of the current user. Patch by Jérémy Bobbio; implements ticket 2972. - Tor now refuses to create a ControlSocket in a directory that is world-readable (or group-readable if ControlSocketsGroupWritable is 0). This is necessary because some operating systems do not enforce permissions on an AF_UNIX sockets. Permissions on the directory holding the socket, however, seems to work everywhere. - Warn when CookieAuthFileGroupReadable is set but CookieAuthFile is not. This would lead to a cookie that is still not group readable. Closes bug 1843. Suggested by katmagic. - Future-proof the controller protocol a bit by ignoring keyword arguments we do not recognize. o Minor features (more useful logging): - Revise most log messages that refer to nodes by nickname to instead use the "$key=nickname at address" format. This should be more useful, especially since nicknames are less and less likely to be unique. Resolves ticket 3045. - When an HTTPS proxy reports "403 Forbidden", we now explain what it means rather than calling it an unexpected status code. Closes bug 2503. Patch from Michael Yakubovich. - Rate-limit a warning about failures to download v2 networkstatus documents. Resolves part of bug 1352. - Rate-limit the "your application is giving Tor only an IP address" warning. Addresses bug 2000; bugfix on 0.0.8pre2. - Rate-limit "Failed to hand off onionskin" warnings. - When logging a rate-limited warning, we now mention how many messages got suppressed since the last warning. - Make the formerly ugly "2 unknown, 7 missing key, 0 good, 0 bad, 2 no signature, 4 required" messages about consensus signatures easier to read, and make sure they get logged at the same severity as the messages explaining which keys are which. Fixes bug 1290. - Don't warn when we have a consensus that we can't verify because of missing certificates, unless those certificates are ones that we have been trying and failing to download. Fixes bug 1145. o Minor features (log domains): - Add documentation for configuring logging at different severities in different log domains. We've had this feature since 0.2.1.1-alpha, but for some reason it never made it into the manpage. Fixes bug 2215. - Make it simpler to specify "All log domains except for A and B". Previously you needed to say "[*,~A,~B]". Now you can just say "[~A,~B]". - Add a "LogMessageDomains 1" option to include the domains of log messages along with the messages. Without this, there's no way to use log domains without reading the source or doing a lot of guessing. - Add a new "Handshake" log domain for activities that happen during the TLS handshake. o Minor features (build process): - Make compilation with clang possible when using "--enable-gcc-warnings" by removing two warning options that clang hasn't implemented yet and by fixing a few warnings. Resolves ticket 2696. - Detect platforms that brokenly use a signed size_t, and refuse to build there. Found and analyzed by doorss and rransom. - Fix a bunch of compile warnings revealed by mingw with gcc 4.5. Resolves bug 2314. - Add support for statically linking zlib by specifying "--enable-static-zlib", to go with our support for statically linking openssl and libevent. Resolves bug 1358. - Instead of adding the svn revision to the Tor version string, report the git commit (when we're building from a git checkout). - Rename the "log.h" header to "torlog.h" so as to conflict with fewer system headers. - New --digests command-line switch to output the digests of the source files Tor was built with. - Generate our manpage and HTML documentation using Asciidoc. This change should make it easier to maintain the documentation, and produce nicer HTML. The build process fails if asciidoc cannot be found and building with asciidoc isn't disabled (via the "--disable-asciidoc" argument to ./configure. Skipping the manpage speeds up the build considerably. o Minor features (options / torrc): - Warn when the same option is provided more than once in a torrc file, on the command line, or in a single SETCONF statement, and the option is one that only accepts a single line. Closes bug 1384. - Warn when the user configures two HiddenServiceDir lines that point to the same directory. Bugfix on 0.0.6 (the version introducing HiddenServiceDir); fixes bug 3289. - Add new "perconnbwrate" and "perconnbwburst" consensus params to do individual connection-level rate limiting of clients. The torrc config options with the same names trump the consensus params, if both are present. Replaces the old "bwconnrate" and "bwconnburst" consensus params which were broken from 0.2.2.7-alpha through 0.2.2.14-alpha. Closes bug 1947. - New config option "WarnUnsafeSocks 0" disables the warning that occurs whenever Tor receives a socks handshake using a version of the socks protocol that can only provide an IP address (rather than a hostname). Setups that do DNS locally over Tor are fine, and we shouldn't spam the logs in that case. - New config option "CircuitStreamTimeout" to override our internal timeout schedule for how many seconds until we detach a stream from a circuit and try a new circuit. If your network is particularly slow, you might want to set this to a number like 60. - New options for SafeLogging to allow scrubbing only log messages generated while acting as a relay. Specify "SafeLogging relay" if you want to ensure that only messages known to originate from client use of the Tor process will be logged unsafely. - Time and memory units in the configuration file can now be set to fractional units. For example, "2.5 GB" is now a valid value for AccountingMax. - Support line continuations in the torrc config file. If a line ends with a single backslash character, the newline is ignored, and the configuration value is treated as continuing on the next line. Resolves bug 1929. o Minor features (unit tests): - Revise our unit tests to use the "tinytest" framework, so we can run tests in their own processes, have smarter setup/teardown code, and so on. The unit test code has moved to its own subdirectory, and has been split into multiple modules. - Add a unit test for cross-platform directory-listing code. - Add some forgotten return value checks during unit tests. Found by coverity. - Use GetTempDir to find the proper temporary directory location on Windows when generating temporary files for the unit tests. Patch by Gisle Vanem. o Minor features (misc): - The "torify" script now uses torsocks where available. - Make Libevent log messages get delivered to controllers later, and not from inside the Libevent log handler. This prevents unsafe reentrant Libevent calls while still letting the log messages get through. - Certain Tor clients (such as those behind check.torproject.org) may want to fetch the consensus in an extra early manner. To enable this a user may now set FetchDirInfoExtraEarly to 1. This also depends on setting FetchDirInfoEarly to 1. Previous behavior will stay the same as only certain clients who must have this information sooner should set this option. - Expand homedirs passed to tor-checkkey. This should silence a coverity complaint about passing a user-supplied string into open() without checking it. - Make sure to disable DirPort if running as a bridge. DirPorts aren't used on bridges, and it makes bridge scanning somewhat easier. - Create the /var/run/tor directory on startup on OpenSUSE if it is not already created. Patch from Andreas Stieger. Fixes bug 2573. o Minor bugfixes (relays): - When a relay decides that its DNS is too broken for it to serve as an exit server, it advertised itself as a non-exit, but continued to act as an exit. This could create accidental partitioning opportunities for users. Instead, if a relay is going to advertise reject *:* as its exit policy, it should really act with exit policy "reject *:*". Fixes bug 2366. Bugfix on Tor 0.1.2.5-alpha. Bugfix by user "postman" on trac. - Publish a router descriptor even if generating an extra-info descriptor fails. Previously we would not publish a router descriptor without an extra-info descriptor; this can cause fast exit relays collecting exit-port statistics to drop from the consensus. Bugfix on 0.1.2.9-rc; fixes bug 2195. - When we're trying to guess whether we know our IP address as a relay, we would log various ways that we failed to guess our address, but never log that we ended up guessing it successfully. Now add a log line to help confused and anxious relay operators. Bugfix on 0.1.2.1-alpha; fixes bug 1534. - For bandwidth accounting, calculate our expected bandwidth rate based on the time during which we were active and not in soft-hibernation during the last interval. Previously, we were also considering the time spent in soft-hibernation. If this was a long time, we would wind up underestimating our bandwidth by a lot, and skewing our wakeup time towards the start of the accounting interval. Fixes bug 1789. Bugfix on 0.0.9pre5. - Demote a confusing TLS warning that relay operators might get when someone tries to talk to their ORPort. It is not the operator's fault, nor can they do anything about it. Fixes bug 1364; bugfix on 0.2.0.14-alpha. - Change "Application request when we're believed to be offline." notice to "Application request when we haven't used client functionality lately.", to clarify that it's not an error. Bugfix on 0.0.9.3; fixes bug 1222. o Minor bugfixes (bridges): - When a client starts or stops using bridges, never use a circuit that was built before the configuration change. This behavior could put at risk a user who uses bridges to ensure that her traffic only goes to the chosen addresses. Bugfix on 0.2.0.3-alpha; fixes bug 3200. - Do not reset the bridge descriptor download status every time we re-parse our configuration or get a configuration change. Fixes bug 3019; bugfix on 0.2.0.3-alpha. - Users couldn't configure a regular relay to be their bridge. It didn't work because when Tor fetched the bridge descriptor, it found that it already had it, and didn't realize that the purpose of the descriptor had changed. Now we replace routers with a purpose other than bridge with bridge descriptors when fetching them. Bugfix on 0.1.1.9-alpha. Fixes bug 1776. - In the special case where you configure a public exit relay as your bridge, Tor would be willing to use that exit relay as the last hop in your circuit as well. Now we fail that circuit instead. Bugfix on 0.2.0.12-alpha. Fixes bug 2403. Reported by "piebeer". o Minor bugfixes (clients): - We now ask the other side of a stream (the client or the exit) for more data on that stream when the amount of queued data on that stream dips low enough. Previously, we wouldn't ask the other side for more data until either it sent us more data (which it wasn't supposed to do if it had exhausted its window!) or we had completely flushed all our queued data. This flow control fix should improve throughput. Fixes bug 2756; bugfix on the earliest released versions of Tor (svn commit r152). - When a client finds that an origin circuit has run out of 16-bit stream IDs, we now mark it as unusable for new streams. Previously, we would try to close the entire circuit. Bugfix on 0.0.6. - Make it explicit that we don't cannibalize one-hop circuits. This happens in the wild, but doesn't turn out to be a problem because we fortunately don't use those circuits. Many thanks to outofwords for the initial analysis and to swissknife who confirmed that two-hop circuits are actually created. - Resolve an edge case in path weighting that could make us misweight our relay selection. Fixes bug 1203; bugfix on 0.0.8rc1. - Make the DNSPort option work with libevent 2.x. Don't alter the behaviour for libevent 1.x. Fixes bug 1143. Found by SwissTorExit. o Minor bugfixes (directory authorities): - Make directory authorities more accurate at recording when relays that have failed several reachability tests became unreachable, so we can provide more accuracy at assigning Stable, Guard, HSDir, etc flags. Bugfix on 0.2.0.6-alpha. Resolves bug 2716. - Directory authorities are now more robust to hops back in time when calculating router stability. Previously, if a run of uptime or downtime appeared to be negative, the calculation could give incorrect results. Bugfix on 0.2.0.6-alpha; noticed when fixing bug 1035. - Directory authorities will now attempt to download consensuses if their own efforts to make a live consensus have failed. This change means authorities that restart will fetch a valid consensus, and it means authorities that didn't agree with the current consensus will still fetch and serve it if it has enough signatures. Bugfix on 0.2.0.9-alpha; fixes bug 1300. - Never vote for a server as "Running" if we have a descriptor for it claiming to be hibernating, and that descriptor was published more recently than our last contact with the server. Bugfix on 0.2.0.3-alpha; fixes bug 911. - Directory authorities no longer change their opinion of, or vote on, whether a router is Running, unless they have themselves been online long enough to have some idea. Bugfix on 0.2.0.6-alpha. Fixes bug 1023. o Minor bugfixes (hidden services): - Log malformed requests for rendezvous descriptors as protocol warnings, not warnings. Also, use a more informative log message in case someone sees it at log level warning without prior info-level messages. Fixes bug 2748; bugfix on 0.2.0.10-alpha. - Accept hidden service descriptors if we think we might be a hidden service directory, regardless of what our consensus says. This helps robustness, since clients and hidden services can sometimes have a more up-to-date view of the network consensus than we do, and if they think that the directory authorities list us a HSDir, we might actually be one. Related to bug 2732; bugfix on 0.2.0.10-alpha. - Correct the warning displayed when a rendezvous descriptor exceeds the maximum size. Fixes bug 2750; bugfix on 0.2.1.5-alpha. Found by John Brooks. - Clients and hidden services now use HSDir-flagged relays for hidden service descriptor downloads and uploads even if the relays have no DirPort set and the client has disabled TunnelDirConns. This will eventually allow us to give the HSDir flag to relays with no DirPort. Fixes bug 2722; bugfix on 0.2.1.6-alpha. - Only limit the lengths of single HS descriptors, even when multiple HS descriptors are published to an HSDir relay in a single POST operation. Fixes bug 2948; bugfix on 0.2.1.5-alpha. Found by hsdir. o Minor bugfixes (controllers): - Allow GETINFO fingerprint to return a fingerprint even when we have not yet built a router descriptor. Fixes bug 3577; bugfix on 0.2.0.1-alpha. - Send a SUCCEEDED stream event to the controller when a reverse resolve succeeded. Fixes bug 3536; bugfix on 0.0.8pre1. Issue discovered by katmagic. - Remove a trailing asterisk from "exit-policy/default" in the output of the control port command "GETINFO info/names". Bugfix on 0.1.2.5-alpha. - Make the SIGNAL DUMP controller command work on FreeBSD. Fixes bug 2917. Bugfix on 0.1.1.1-alpha. - When we restart our relay, we might get a successful connection from the outside before we've started our reachability tests, triggering a warning: "ORPort found reachable, but I have no routerinfo yet. Failing to inform controller of success." This bug was harmless unless Tor is running under a controller like Vidalia, in which case the controller would never get a REACHABILITY_SUCCEEDED status event. Bugfix on 0.1.2.6-alpha; fixes bug 1172. - When a controller changes TrackHostExits, remove mappings for hosts that should no longer have their exits tracked. Bugfix on 0.1.0.1-rc. - When a controller changes VirtualAddrNetwork, remove any mappings for hosts that were automapped to the old network. Bugfix on 0.1.1.19-rc. - When a controller changes one of the AutomapHosts* options, remove any mappings for hosts that should no longer be automapped. Bugfix on 0.2.0.1-alpha. - Fix an off-by-one error in calculating some controller command argument lengths. Fortunately, this mistake is harmless since the controller code does redundant NUL termination too. Found by boboper. Bugfix on 0.1.1.1-alpha. - Fix a bug in the controller interface where "GETINFO ns/asdaskljkl" would return "551 Internal error" rather than "552 Unrecognized key ns/asdaskljkl". Bugfix on 0.1.2.3-alpha. - Don't spam the controller with events when we have no file descriptors available. Bugfix on 0.2.1.5-alpha. (Rate-limiting for log messages was already solved from bug 748.) - Emit a GUARD DROPPED controller event for a case we missed. - Ensure DNS requests launched by "RESOLVE" commands from the controller respect the __LeaveStreamsUnattached setconf options. The same goes for requests launched via DNSPort or transparent proxying. Bugfix on 0.2.0.1-alpha; fixes bug 1525. o Minor bugfixes (config options): - Tor used to limit HttpProxyAuthenticator values to 48 characters. Change the limit to 512 characters by removing base64 newlines. Fixes bug 2752. Fix by Michael Yakubovich. - Complain if PublishServerDescriptor is given multiple arguments that include 0 or 1. This configuration will be rejected in the future. Bugfix on 0.2.0.1-alpha; closes bug 1107. - Disallow BridgeRelay 1 and ORPort 0 at once in the configuration. Bugfix on 0.2.0.13-alpha; closes bug 928. o Minor bugfixes (log subsystem fixes): - When unable to format an address as a string, report its value as "???" rather than reusing the last formatted address. Bugfix on 0.2.1.5-alpha. - Be more consistent in our treatment of file system paths. "~" should get expanded to the user's home directory in the Log config option. Fixes bug 2971; bugfix on 0.2.0.1-alpha, which introduced the feature for the -f and --DataDirectory options. o Minor bugfixes (memory management): - Don't stack-allocate the list of supplementary GIDs when we're about to log them. Stack-allocating NGROUPS_MAX gid_t elements could take up to 256K, which is way too much stack. Found by Coverity; CID #450. Bugfix on 0.2.1.7-alpha. - Save a couple bytes in memory allocation every time we escape certain characters in a string. Patch from Florian Zumbiehl. o Minor bugfixes (protocol correctness): - When checking for 1024-bit keys, check for 1024 bits, not 128 bytes. This allows Tor to correctly discard keys of length 1017 through 1023. Bugfix on 0.0.9pre5. - Require that introduction point keys and onion handshake keys have a public exponent of 65537. Starts to fix bug 3207; bugfix on 0.2.0.10-alpha. - Handle SOCKS messages longer than 128 bytes long correctly, rather than waiting forever for them to finish. Fixes bug 2330; bugfix on 0.2.0.16-alpha. Found by doorss. - Never relay a cell for a circuit we have already destroyed. Between marking a circuit as closeable and finally closing it, it may have been possible for a few queued cells to get relayed, even though they would have been immediately dropped by the next OR in the circuit. Fixes bug 1184; bugfix on 0.2.0.1-alpha. - Never queue a cell for a circuit that's already been marked for close. - Fix a spec conformance issue: the network-status-version token must be the first token in a v3 consensus or vote. Discovered by "parakeep". Bugfix on 0.2.0.3-alpha. - A networkstatus vote must contain exactly one signature. Spec conformance issue. Bugfix on 0.2.0.3-alpha. - When asked about a DNS record type we don't support via a client DNSPort, reply with NOTIMPL rather than an empty reply. Patch by intrigeri. Fixes bug 3369; bugfix on 2.0.1-alpha. - Make more fields in the controller protocol case-insensitive, since control-spec.txt said they were. o Minor bugfixes (log messages): - Fix a log message that said "bits" while displaying a value in bytes. Found by wanoskarnet. Fixes bug 3318; bugfix on 0.2.0.1-alpha. - Downgrade "no current certificates known for authority" message from Notice to Info. Fixes bug 2899; bugfix on 0.2.0.10-alpha. - Correctly describe errors that occur when generating a TLS object. Previously we would attribute them to a failure while generating a TLS context. Patch by Robert Ransom. Bugfix on 0.1.0.4-rc; fixes bug 1994. - Fix an instance where a Tor directory mirror might accidentally log the IP address of a misbehaving Tor client. Bugfix on 0.1.0.1-rc. - Stop logging at severity 'warn' when some other Tor client tries to establish a circuit with us using weak DH keys. It's a protocol violation, but that doesn't mean ordinary users need to hear about it. Fixes the bug part of bug 1114. Bugfix on 0.1.0.13. - If your relay can't keep up with the number of incoming create cells, it would log one warning per failure into your logs. Limit warnings to 1 per minute. Bugfix on 0.0.2pre10; fixes bug 1042. o Minor bugfixes (build fixes): - Fix warnings from GCC 4.6's "-Wunused-but-set-variable" option. - When warning about missing zlib development packages during compile, give the correct package names. Bugfix on 0.2.0.1-alpha. - Fix warnings that newer versions of autoconf produce during ./autogen.sh. These warnings appear to be harmless in our case, but they were extremely verbose. Fixes bug 2020. - Squash a compile warning on OpenBSD. Reported by Tas; fixes bug 1848. o Minor bugfixes (portability): - Write several files in text mode, on OSes that distinguish text mode from binary mode (namely, Windows). These files are: 'buffer-stats', 'dirreq-stats', and 'entry-stats' on relays that collect those statistics; 'client_keys' and 'hostname' for hidden services that use authentication; and (in the tor-gencert utility) newly generated identity and signing keys. Previously, we wouldn't specify text mode or binary mode, leading to an assertion failure. Fixes bug 3607. Bugfix on 0.2.1.1-alpha (when the DirRecordUsageByCountry option which would have triggered the assertion failure was added), although this assertion failure would have occurred in tor-gencert on Windows in 0.2.0.1-alpha. - Selectively disable deprecation warnings on OS X because Lion started deprecating the shipped copy of openssl. Fixes bug 3643. - Use a wide type to hold sockets when built for 64-bit Windows. Fixes bug 3270. - Fix an issue that prevented static linking of libevent on some platforms (notably Linux). Fixes bug 2698; bugfix on 0.2.1.23, where we introduced the "--with-static-libevent" configure option. - Fix a bug with our locking implementation on Windows that couldn't correctly detect when a file was already locked. Fixes bug 2504, bugfix on 0.2.1.6-alpha. - Build correctly on OSX with zlib 1.2.4 and higher with all warnings enabled. - Fix IPv6-related connect() failures on some platforms (BSD, OS X). Bugfix on 0.2.0.3-alpha; fixes first part of bug 2660. Patch by "piebeer". o Minor bugfixes (code correctness): - Always NUL-terminate the sun_path field of a sockaddr_un before passing it to the kernel. (Not a security issue: kernels are smart enough to reject bad sockaddr_uns.) Found by Coverity; CID #428. Bugfix on Tor 0.2.0.3-alpha. - Make connection_printf_to_buf()'s behaviour sane. Its callers expect it to emit a CRLF iff the format string ends with CRLF; it actually emitted a CRLF iff (a) the format string ended with CRLF or (b) the resulting string was over 1023 characters long or (c) the format string did not end with CRLF *and* the resulting string was 1021 characters long or longer. Bugfix on 0.1.1.9-alpha; fixes part of bug 3407. - Make send_control_event_impl()'s behaviour sane. Its callers expect it to always emit a CRLF at the end of the string; it might have emitted extra control characters as well. Bugfix on 0.1.1.9-alpha; fixes another part of bug 3407. - Make crypto_rand_int() check the value of its input correctly. Previously, it accepted values up to UINT_MAX, but could return a negative number if given a value above INT_MAX+1. Found by George Kadianakis. Fixes bug 3306; bugfix on 0.2.2pre14. - Fix a potential null-pointer dereference while computing a consensus. Bugfix on tor-0.2.0.3-alpha, found with the help of clang's analyzer. - If we fail to compute the identity digest of a v3 legacy keypair, warn, and don't use a buffer-full of junk instead. Bugfix on 0.2.1.1-alpha; fixes bug 3106. - Resolve an untriggerable issue in smartlist_string_num_isin(), where if the function had ever in the future been used to check for the presence of a too-large number, it would have given an incorrect result. (Fortunately, we only used it for 16-bit values.) Fixes bug 3175; bugfix on 0.1.0.1-rc. - Be more careful about reporting the correct error from a failed connect() system call. Under some circumstances, it was possible to look at an incorrect value for errno when sending the end reason. Bugfix on 0.1.0.1-rc. - Correctly handle an "impossible" overflow cases in connection byte counting, where we write or read more than 4GB on an edge connection in a single second. Bugfix on 0.1.2.8-beta. - Avoid a double mark-for-free warning when failing to attach a transparent proxy connection. Bugfix on 0.1.2.1-alpha. Fixes bug 2279. - Correctly detect failure to allocate an OpenSSL BIO. Fixes bug 2378; found by "cypherpunks". This bug was introduced before the first Tor release, in svn commit r110. - Fix a bug in bandwidth history state parsing that could have been triggered if a future version of Tor ever changed the timing granularity at which bandwidth history is measured. Bugfix on Tor 0.1.1.11-alpha. - Add assertions to check for overflow in arguments to base32_encode() and base32_decode(); fix a signed-unsigned comparison there too. These bugs are not actually reachable in Tor, but it's good to prevent future errors too. Found by doorss. - Avoid a bogus overlapped memcpy in tor_addr_copy(). Reported by "memcpyfail". - Set target port in get_interface_address6() correctly. Bugfix on 0.1.1.4-alpha and 0.2.0.3-alpha; fixes second part of bug 2660. - Fix an impossible-to-actually-trigger buffer overflow in relay descriptor generation. Bugfix on 0.1.0.15. - Fix numerous small code-flaws found by Coverity Scan Rung 3. o Minor bugfixes (code improvements): - After we free an internal connection structure, overwrite it with a different memory value than we use for overwriting a freed internal circuit structure. Should help with debugging. Suggested by bug 1055. - If OpenSSL fails to make a duplicate of a private or public key, log an error message and try to exit cleanly. May help with debugging if bug 1209 ever remanifests. - Some options used different conventions for uppercasing of acronyms when comparing manpage and source. Fix those in favor of the manpage, as it makes sense to capitalize acronyms. - Take a first step towards making or.h smaller by splitting out function definitions for all source files in src/or/. Leave structures and defines in or.h for now. - Remove a few dead assignments during router parsing. Found by coverity. - Don't use 1-bit wide signed bit fields. Found by coverity. - Avoid signed/unsigned comparisons by making SIZE_T_CEILING unsigned. None of the cases where we did this before were wrong, but by making this change we avoid warnings. Fixes bug 2475; bugfix on 0.2.1.28. - The memarea code now uses a sentinel value at the end of each area to make sure nothing writes beyond the end of an area. This might help debug some conceivable causes of bug 930. - Always treat failure to allocate an RSA key as an unrecoverable allocation error. - Add some more defensive programming for architectures that can't handle unaligned integer accesses. We don't know of any actual bugs right now, but that's the best time to fix them. Fixes bug 1943. o Minor bugfixes (misc): - Fix a rare bug in rend_fn unit tests: we would fail a test when a randomly generated port is 0. Diagnosed by Matt Edman. Bugfix on 0.2.0.10-alpha; fixes bug 1808. - Where available, use Libevent 2.0's periodic timers so that our once-per-second cleanup code gets called even more closely to once per second than it would otherwise. Fixes bug 943. - Ignore OutboundBindAddress when connecting to localhost. Connections to localhost need to come _from_ localhost, or else local servers (like DNS and outgoing HTTP/SOCKS proxies) will often refuse to listen. - Update our OpenSSL 0.9.8l fix so that it works with OpenSSL 0.9.8m too. - If any of the v3 certs we download are unparseable, we should actually notice the failure so we don't retry indefinitely. Bugfix on 0.2.0.x; reported by "rotator". - When Tor fails to parse a descriptor of any kind, dump it to disk. Might help diagnosing bug 1051. - Make our 'torify' script more portable; if we have only one of 'torsocks' or 'tsocks' installed, don't complain to the user; and explain our warning about tsocks better. - Fix some urls in the exit notice file and make it XHTML1.1 strict compliant. Based on a patch from Christian Kujau. o Documentation changes: - Modernize the doxygen configuration file slightly. Fixes bug 2707. - Resolve all doxygen warnings except those for missing documentation. Fixes bug 2705. - Add doxygen documentation for more functions, fields, and types. - Convert the HACKING file to asciidoc, and add a few new sections to it, explaining how we use Git, how we make changelogs, and what should go in a patch. - Document the default socks host and port (127.0.0.1:9050) for tor-resolve. - Removed some unnecessary files from the source distribution. The AUTHORS file has now been merged into the people page on the website. The roadmaps and design doc can now be found in the projects directory in svn. o Deprecated and removed features (config): - Remove the torrc.complete file. It hasn't been kept up to date and users will have better luck checking out the manpage. - Remove the HSAuthorityRecordStats option that version 0 hidden service authorities could use to track statistics of overall v0 hidden service usage. - Remove the obsolete "NoPublish" option; it has been flagged as obsolete and has produced a warning since 0.1.1.18-rc. - Caches no longer download and serve v2 networkstatus documents unless FetchV2Networkstatus flag is set: these documents haven't haven't been used by clients or relays since 0.2.0.x. Resolves bug 3022. o Deprecated and removed features (controller): - The controller no longer accepts the old obsolete "addr-mappings/" or "unregistered-servers-" GETINFO values. - The EXTENDED_EVENTS and VERBOSE_NAMES controller features are now always on; using them is necessary for correct forward-compatible controllers. o Deprecated and removed features (misc): - Hidden services no longer publish version 0 descriptors, and clients do not request or use version 0 descriptors. However, the old hidden service authorities still accept and serve version 0 descriptors when contacted by older hidden services/clients. - Remove undocumented option "-F" from tor-resolve: it hasn't done anything since 0.2.1.16-rc. - Remove everything related to building the expert bundle for OS X. It has confused many users, doesn't work right on OS X 10.6, and is hard to get rid of once installed. Resolves bug 1274. - Remove support for .noconnect style addresses. Nobody was using them, and they provided another avenue for detecting Tor users via application-level web tricks. - When we fixed bug 1038 we had to put in a restriction not to send RELAY_EARLY cells on rend circuits. This was necessary as long as relays using Tor 0.2.1.3-alpha through 0.2.1.18-alpha were active. Now remove this obsolete check. Resolves bug 2081. - Remove workaround code to handle directory responses from servers that had bug 539 (they would send HTTP status 503 responses _and_ send a body too). Since only server versions before 0.2.0.16-alpha/0.1.2.19 were affected, there is no longer reason to keep the workaround in place. - Remove the old 'fuzzy time' logic. It was supposed to be used for handling calculations where we have a known amount of clock skew and an allowed amount of unknown skew. But we only used it in three places, and we never adjusted the known/unknown skew values. This is still something we might want to do someday, but if we do, we'll want to do it differently. - Remove the "--enable-iphone" option to ./configure. According to reports from Marco Bonetti, Tor builds fine without any special tweaking on recent iPhone SDK versions. ------------------------------------------------------------------- Mon Feb 28 21:29:12 UTC 2011 - andreas.stieger@gmx.de - updated to upstram 0.2.1.30 Tor 0.2.1.30 fixes a variety of less critical bugs. The main other change is a slight tweak to Tor's TLS handshake that makes relays and bridges that run this new version reachable from Iran again. We don't expect this tweak will win the arms race long-term, but it buys us time until we roll out a better solution. o Major bugfixes: - Stop sending a CLOCK_SKEW controller status event whenever we fetch directory information from a relay that has a wrong clock. Instead, only inform the controller when it's a trusted authority that claims our clock is wrong. Bugfix on 0.1.2.6-alpha; fixes the rest of bug 1074. - Fix a bounds-checking error that could allow an attacker to remotely crash a directory authority. Bugfix on 0.2.1.5-alpha. Found by "piebeer". - If relays set RelayBandwidthBurst but not RelayBandwidthRate, Tor would ignore their RelayBandwidthBurst setting, potentially using more bandwidth than expected. Bugfix on 0.2.0.1-alpha. Reported by Paul Wouters. Fixes bug 2470. - Ignore and warn if the user mistakenly sets "PublishServerDescriptor hidserv" in her torrc. The 'hidserv' argument never controlled publication of hidden service descriptors. Bugfix on 0.2.0.1-alpha. o Minor features: - Adjust our TLS Diffie-Hellman parameters to match those used by Apache's mod_ssl. - Update to the February 1 2011 Maxmind GeoLite Country database. o Minor bugfixes: - Check for and reject overly long directory certificates and directory tokens before they have a chance to hit any assertions. Bugfix on 0.2.1.28. Found by "doorss". - Bring the logic that gathers routerinfos and assesses the acceptability of circuits into line. This prevents a Tor OP from getting locked in a cycle of choosing its local OR as an exit for a path (due to a .exit request) and then rejecting the circuit because its OR is not listed yet. It also prevents Tor clients from using an OR running in the same instance as an exit (due to a .exit request) if the OR does not meet the same requirements expected of an OR running elsewhere. Fixes bug 1859; bugfix on 0.1.0.1-rc. o Packaging changes: - Stop shipping the Tor specs files and development proposal documents in the tarball. They are now in a separate git repository at git://git.torproject.org/torspec.git - Do not include Git version tags as though they are SVN tags when generating a tarball from inside a repository that has switched between branches. Bugfix on 0.2.1.15-rc; fixes bug 2402. ------------------------------------------------------------------- Wed Feb 16 21:13:00 UTC 2011 - andreas.stieger@gmx.de - fix bug #671821 - /var/run/tor might not exist ------------------------------------------------------------------- Mon Jan 17 19:47:20 UTC 2011 - andreas.stieger@gmx.de - updated to upstream 0.2.1.29 o Major bugfixes (security): - Fix a heap overflow bug where an adversary could cause heap corruption. This bug probably allows remote code execution attacks. Reported by "debuger". Fixes CVE-2011-0427. Bugfix on 0.1.2.10-rc. - Prevent a denial-of-service attack by disallowing any zlib-compressed data whose compression factor is implausibly high. Fixes part of bug 2324; reported by "doorss". - Zero out a few more keys in memory before freeing them. Fixes bug 2384 and part of bug 2385. These key instances found by "cypherpunks", based on Andrew Case's report about being able to find sensitive data in Tor's memory space if you have enough permissions. Bugfix on 0.0.2pre9. o Major bugfixes (crashes): - Prevent calls to Libevent from inside Libevent log handlers. This had potential to cause a nasty set of crashes, especially if running Libevent with debug logging enabled, and running Tor with a controller watching for low-severity log messages. Bugfix on 0.1.0.2-rc. Fixes bug 2190. - Add a check for SIZE_T_MAX to tor_realloc() to try to avoid underflow errors there too. Fixes the other part of bug 2324. - Fix a bug where we would assert if we ever had a cached-descriptors.new file (or another file read directly into memory) of exactly SIZE_T_CEILING bytes. Fixes bug 2326; bugfix on 0.2.1.25. Found by doorss. - Fix some potential asserts and parsing issues with grossly malformed router caches. Fixes bug 2352; bugfix on Tor 0.2.1.27. Found by doorss. o Minor bugfixes (other): - Fix a bug with handling misformed replies to reverse DNS lookup requests in DNSPort. Bugfix on Tor 0.2.0.1-alpha. Related to a bug reported by doorss. - Fix compilation on mingw when a pthreads compatibility library has been installed. (We don't want to use it, so we shouldn't be including pthread.h.) Fixes bug 2313; bugfix on 0.1.0.1-rc. - Fix a bug where we would declare that we had run out of virtual addresses when the address space was only half-exhausted. Bugfix on 0.1.2.1-alpha. - Correctly handle the case where AutomapHostsOnResolve is set but no virtual addresses are available. Fixes bug 2328; bugfix on 0.1.2.1-alpha. Bug found by doorss. - Correctly handle wrapping around when we run out of virtual address space. Found by cypherpunks, bugfix on 0.2.0.5-alpha. o Minor features: - Update to the January 1 2011 Maxmind GeoLite Country database. - Introduce output size checks on all of our decryption functions. o Build changes: - Tor does not build packages correctly with Automake 1.6 and earlier; added a check to Makefile.am to make sure that we're building with Automake 1.7 or later. - The 0.2.1.28 tarball was missing src/common/OpenBSD_malloc_Linux.c because we built it with a too-old version of automake. Thus that release broke ./configure --enable-openbsd-malloc, which is popular among really fast exit relays on Linux. ------------------------------------------------------------------- Mon Dec 20 21:24:19 UTC 2010 - andreas.stieger@gmx.de - updated to upstream 0.2.1.28 - Major bugfixes: - Fix a remotely exploitable bug that could be used to crash instances of Tor remotely by overflowing on the heap. Remote-code execution hasn't been confirmed, but can't be ruled out. Everyone should upgrade. Bugfix on the 0.1.1 series and later. - Directory authority changes: - Change IP address and ports for gabelmoo (v3 directory authority). - Minor features: - Update to the December 1 2010 Maxmind GeoLite Country database. ------------------------------------------------------------------- Fri Nov 26 17:12:40 UTC 2010 - andreas.stieger@gmx.de - updated to upstream 0.2.1.27 ------------------------------------------------------------------- Fri Aug 6 03:53:35 UTC 2010 - cristian.rodriguez@opensuse.org - %ghost the pid file so /var/run can be mounted tmpfs - require logrotate ------------------------------------------------------------------- Sat May 29 17:50:51 UTC 2010 - andreas.stieger@gmx.de - updated to upstream 0.2.1.26 ------------------------------------------------------------------- Sun Mar 28 17:00:30 UTC 2010 - andreas.stieger@gmx.de - updated to upstream 0.2.1.25 ------------------------------------------------------------------- Mon Mar 1 20:49:13 UTC 2010 - andreas.stieger@gmx.de - new upstream version (0.2.1.24) ------------------------------------------------------------------- Fri Jan 29 13:34:55 UTC 2010 - puzel@novell.com - remove debug_package macro to make it build ------------------------------------------------------------------- Sun Jan 24 22:21:51 UTC 2010 - andreas.stieger@gmx.de - new upstream version (0.2.1.22)
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