American fuzzy lop is a security-oriented fuzzer
American fuzzy lop is a security-oriented fuzzer that employs a novel type of compile-time instrumentation and genetic algorithms to automatically discover clean, interesting test cases that trigger new internal states in the targeted binary. This substantially improves the functional coverage for the fuzzed code. The compact synthesized corpora produced by the tool are also useful for seeding other, more labor- or resource-intensive testing regimes down the road.
Compared to other instrumented fuzzers, afl-fuzz is designed to be practical: it has modest performance overhead, uses a variety of highly effective fuzzing strategies and effort minimization tricks, requires essentially no configuration, and seamlessly handles complex, real-world use cases - say, common image parsing or file compression libraries.
- Developed at devel:tools
- Sources inherited from project openSUSE:Factory
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osc -A https://api.opensuse.org checkout openSUSE:42:Factory-Candidates-Check/afl && cd $_ - Create Badge
Source Files
| Filename | Size | Changed |
|---|---|---|
| 2.63c.tar.gz | 0001326005 1.26 MB | |
| afl-2.63c-fix-paths.patch | 0000000468 468 Bytes | |
| afl-rpmlintrc | 0000000725 725 Bytes | |
| afl.changes | 0000044474 43.4 KB | |
| afl.spec | 0000002896 2.83 KB |
Revision 49 (latest revision is 82)
Dominique Leuenberger (dimstar_suse)
accepted
request 793420
from
Marcus Meissner (msmeissn)
(revision 49)
- updated to 2.63c
- all:
- big code changes to make afl-fuzz thread-safe so afl-fuzz can spawn
multiple fuzzing threads in the future or even become a library
- afl basic tools now report on the environment variables picked up
- more tools get environment variable usage info in the help output
- force all output to stdout (some OK/SAY/WARN messages were sent to
stdout, some to stderr)
- uninstrumented mode uses an internal forkserver ("fauxserver")
- now builds with `-D_FORTIFY_SOURCE=2`
- drastically reduced number of (de)allocations during fuzzing
- afl-fuzz:
- python mutator modules and custom mutator modules now use the same
interface and hence the API changed
- AFL_AUTORESUME will resume execution without the need to specify `-i -`
- added experimental power schedules (-p):
- mmopt: ignores runtime of queue entries, gives higher weighting to
the last 5 queue entries
- rare: puts focus on queue entries that hits rare branches, also ignores
runtime
- llvm_mode:
- added SNAPSHOT feature (using https://github.com/AFLplusplus/AFL-Snapshot-LKM)
- added Control Flow Integrity sanitizer (AFL_USE_CFISAN)
- added AFL_LLVM_INSTRUMENT option to control the instrumentation type
easier: DEFAULT, CFG (INSTRIM), LTO, CTX, NGRAM-x (x=2-16)
- made USE_TRACE_PC compile obsolete
- LTO collision free instrumented added in llvm_mode with afl-clang-lto -
note that this mode is amazing, but quite some targets won't compile
- Added llvm_mode NGRAM prev_loc coverage by Adrean Herrera
(https://github.com/adrianherrera/afl-ngram-pass/), activate by setting (forwarded request 793419 from msmeissn)
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