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openssl-1_1.29173
openssl-CVE-2023-0465.patch
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File openssl-CVE-2023-0465.patch of Package openssl-1_1.29173
From 818e2bc9d10e56659c6c68dee1c6a1fd5026f720 Mon Sep 17 00:00:00 2001 From: Matt Caswell <matt@openssl.org> Date: Tue, 7 Mar 2023 15:22:40 +0000 Subject: [PATCH 1/5] Generate some certificates with the certificatePolicies extension Related-to: CVE-2023-0465 --- CHANGES | 9 ++++++++- NEWS | 3 +++ crypto/x509/x509_vfy.c | 11 +++++++++-- test/certs/ca-pol-cert.pem | 19 +++++++++++++++++++ test/certs/ee-cert-policies-bad.pem | 20 ++++++++++++++++++++ test/certs/ee-cert-policies.pem | 20 ++++++++++++++++++++ test/certs/mkcert.sh | 16 ++++++++++++++++ test/certs/setup.sh | 6 ++++++ test/recipes/25-test_verify.t | 13 ++++++++++++- 9 files changed, 113 insertions(+), 4 deletions(-) create mode 100644 test/certs/ca-pol-cert.pem create mode 100644 test/certs/ee-cert-policies-bad.pem create mode 100644 test/certs/ee-cert-policies.pem --- a/CHANGES +++ b/CHANGES @@ -9,12 +9,19 @@ Changes between 1.1.0h and 1.1.0i [14 Aug 2018] + *) Fixed an issue where invalid certificate policies in leaf certificates are + silently ignored by OpenSSL and other certificate policy checks are skipped + for that certificate. A malicious CA could use this to deliberately assert + invalid certificate policies in order to circumvent policy checking on the + certificate altogether. (CVE-2023-0465) + [Matt Caswell] + *) Limited the number of nodes created in a policy tree to mitigate against CVE-2023-0464. The default limit is set to 1000 nodes, which should be sufficient for most installations. If required, the limit can be adjusted by setting the OPENSSL_POLICY_TREE_NODES_MAX build time define to a desired maximum number of nodes or zero to allow - unlimited growth. + unlimited growth. (CVE-2023-0464) [Paul Dale] *) Fixed a type confusion vulnerability relating to X.400 address processing --- a/NEWS +++ b/NEWS @@ -7,6 +7,9 @@ Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [14 Aug 2018] + o Fixed handling of invalid certificate policies in leaf certificates + (CVE-2023-0465) + o Limited the number of nodes created in a policy tree ([CVE-2023-0464]) o Client DoS due to large DH parameter (CVE-2018-0732) o Cache timing vulnerability in RSA Key Generation (CVE-2018-0737) --- a/crypto/x509/x509_vfy.c +++ b/crypto/x509/x509_vfy.c @@ -1618,18 +1618,25 @@ static int check_policy(X509_STORE_CTX * } /* Invalid or inconsistent extensions */ if (ret == X509_PCY_TREE_INVALID) { - int i; + int i, cbcalled = 0; /* Locate certificates with bad extensions and notify callback. */ - for (i = 1; i < sk_X509_num(ctx->chain); i++) { + for (i = 0; i < sk_X509_num(ctx->chain); i++) { X509 *x = sk_X509_value(ctx->chain, i); if (!(x->ex_flags & EXFLAG_INVALID_POLICY)) continue; + cbcalled = 1; if (!verify_cb_cert(ctx, x, i, X509_V_ERR_INVALID_POLICY_EXTENSION)) return 0; } + if (!cbcalled) { + /* Should not be able to get here */ + X509err(X509_F_CHECK_POLICY, ERR_R_INTERNAL_ERROR); + return 0; + } + /* The callback ignored the error so we return success */ return 1; } if (ret == X509_PCY_TREE_FAILURE) { --- /dev/null +++ b/test/certs/ca-pol-cert.pem @@ -0,0 +1,19 @@ +-----BEGIN CERTIFICATE----- +MIIDFzCCAf+gAwIBAgIBAjANBgkqhkiG9w0BAQsFADASMRAwDgYDVQQDDAdSb290 +IENBMCAXDTIzMDMwODEyMjMxNloYDzIxMjMwMzA5MTIyMzE2WjANMQswCQYDVQQD +DAJDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAJadpD0ASxxfxsvd +j9IxsogVzMSGLFziaYuE9KejU9+R479RifvwfBANO62sNWJ19X//9G5UjwWmkiOz +n1k50DkYsBBA3mJzik6wjt/c58lBIlSEgAgpvDU8ht8w3t20JP9+YqXAeugqFj/W +l9rFQtsvaWSRywjXVlp5fxuEQelNnXcJEKhsKTNExsBUZebo4/J1BWpklWzA9P0l +YW5INvDAAwcF1nzlEf0Y6Eot03IMNyg2MTE4hehxjdgCSci8GYnFirE/ojXqqpAc +ZGh7r2dqWgZUD1Dh+bT2vjrUzj8eTH3GdzI+oljt29102JIUaqj3yzRYkah8FLF9 +CLNNsUcCAwEAAaN7MHkwDwYDVR0TAQH/BAUwAwEB/zALBgNVHQ8EBAMCAQYwHQYD +VR0OBBYEFLQRM/HX4l73U54gIhBPhga/H8leMB8GA1UdIwQYMBaAFI71Ja8em2uE +PXyAmslTnE1y96NSMBkGA1UdIAQSMBAwDgYMKwYBBAGBgVy8+0cBMA0GCSqGSIb3 +DQEBCwUAA4IBAQBbE+MO9mewWIUY2kt85yhl0oZtvVxbn9K2Hty59ItwJGRNfzx7 +Ge7KgawkvNzMOXmj6qf8TpbJnf41ZLWdRyVZBVyIwrAKIVw1VxfGh8aEifHKN97H +unZkBPcUkAhUJSiC1BOD/euaMYqOi8QwiI702Q6q1NBY1/UKnV/ZIBLecnqfj9vZ +7T0wKxrwGYBztP4pNcxCmBoD9Dg+Dx3ZElo0WXyO4SOh/BgrsKJHKyhbuTpjrI/g +DhcINRp6+lIzuFBtJ67+YXnAEspb3lKMk0YL/LXrCNF2scdmNfOPwHi+OKBqt69C +9FJyWFEMxx2qm/ENE9sbOswgJRnKkaAqHBHx +-----END CERTIFICATE----- --- /dev/null +++ b/test/certs/ee-cert-policies-bad.pem @@ -0,0 +1,20 @@ +-----BEGIN CERTIFICATE----- +MIIDTTCCAjWgAwIBAgIBAjANBgkqhkiG9w0BAQsFADANMQswCQYDVQQDDAJDQTAg +Fw0yMzAzMDgxMjIzMzJaGA8yMTIzMDMwOTEyMjMzMlowGTEXMBUGA1UEAwwOc2Vy +dmVyLmV4YW1wbGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCo/4lY +YYWu3tssD9Vz++K3qBt6dWAr1H08c3a1rt6TL38kkG3JHPSKOM2fooAWVsu0LLuT +5Rcf/w3GQ/4xNPgo2HXpo7uIgu+jcuJTYgVFTeAxl++qnRDSWA2eBp4yuxsIVl1l +Dz9mjsI2oBH/wFk1/Ukc3RxCMwZ4rgQ4I+XndWfTlK1aqUAfrFkQ9QzBZK1KxMY1 +U7OWaoIbFYvRmavknm+UqtKW5Vf7jJFkijwkFsbSGb6CYBM7YrDtPh2zyvlr3zG5 +ep5LR2inKcc/SuIiJ7TvkGPX79ByST5brbkb1Ctvhmjd1XMSuEPJ3EEPoqNGT4tn +iIQPYf55NB9KiR+3AgMBAAGjgakwgaYwHQYDVR0OBBYEFOeb4iqtimw6y3ZR5Y4H +mCKX4XOiMB8GA1UdIwQYMBaAFLQRM/HX4l73U54gIhBPhga/H8leMAkGA1UdEwQC +MAAwEwYDVR0lBAwwCgYIKwYBBQUHAwEwGQYDVR0RBBIwEIIOc2VydmVyLmV4YW1w +bGUwKQYDVR0gBCIwIDAOBgwrBgEEAYGBXLz7RwEwDgYMKwYBBAGBgVy8+0cBMA0G +CSqGSIb3DQEBCwUAA4IBAQArwtwNO++7kStcJeMg3ekz2D/m/8UEjTA1rknBjQiQ +P0FK7tNeRqus9i8PxthNWk+biRayvDzaGIBV7igpDBPfXemDgmW9Adc4MKyiQDfs +YfkHi3xJKvsK2fQmyCs2InVDaKpVAkNFcgAW8nSOhGliqIxLb0EOLoLNwaktou0N +XQHmRzY8S7aIr8K9Qo9y/+MLar+PS4h8l6FkLLkTICiFzE4/wje5S3NckAnadRJa +QpjwM2S6NuA+tYWuOcN//r7BSpW/AZKanYWPzHMrKlqCh+9o7sthPd72+hObG9kx +wSGdzfStNK1I1zM5LiI08WtXCvR6AfLANTo2x1AYhSxF +-----END CERTIFICATE----- --- /dev/null +++ b/test/certs/ee-cert-policies.pem @@ -0,0 +1,20 @@ +-----BEGIN CERTIFICATE----- +MIIDPTCCAiWgAwIBAgIBAjANBgkqhkiG9w0BAQsFADANMQswCQYDVQQDDAJDQTAg +Fw0yMzAzMDgxMjIzMjNaGA8yMTIzMDMwOTEyMjMyM1owGTEXMBUGA1UEAwwOc2Vy +dmVyLmV4YW1wbGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCo/4lY +YYWu3tssD9Vz++K3qBt6dWAr1H08c3a1rt6TL38kkG3JHPSKOM2fooAWVsu0LLuT +5Rcf/w3GQ/4xNPgo2HXpo7uIgu+jcuJTYgVFTeAxl++qnRDSWA2eBp4yuxsIVl1l +Dz9mjsI2oBH/wFk1/Ukc3RxCMwZ4rgQ4I+XndWfTlK1aqUAfrFkQ9QzBZK1KxMY1 +U7OWaoIbFYvRmavknm+UqtKW5Vf7jJFkijwkFsbSGb6CYBM7YrDtPh2zyvlr3zG5 +ep5LR2inKcc/SuIiJ7TvkGPX79ByST5brbkb1Ctvhmjd1XMSuEPJ3EEPoqNGT4tn +iIQPYf55NB9KiR+3AgMBAAGjgZkwgZYwHQYDVR0OBBYEFOeb4iqtimw6y3ZR5Y4H +mCKX4XOiMB8GA1UdIwQYMBaAFLQRM/HX4l73U54gIhBPhga/H8leMAkGA1UdEwQC +MAAwEwYDVR0lBAwwCgYIKwYBBQUHAwEwGQYDVR0RBBIwEIIOc2VydmVyLmV4YW1w +bGUwGQYDVR0gBBIwEDAOBgwrBgEEAYGBXLz7RwEwDQYJKoZIhvcNAQELBQADggEB +AGbWslmAAdMX3+5ChcnFrX+NqDGoyhb3PTgWdtlQB5qtWdIt4rSxN50OcQxFTX0D +QOBabSzR0DDKrgfBe4waL19WsdEvR9GyO4M7ASze/A3IEZue9C9k0n7Vq8zDaAZl +CiR/Zqo9nAOuhKHMgmC/NjUlX7STv5pJVgc4SH8VEKmSRZDmNihaOalUtK5X8/Oa +dawKxsZcaP5IKnOEPPKjtVNJxBu5CXywJHsO0GcoDEnEx1/NLdFoJ6WFw8NuTyDK +NGLq2MHEdyKaigHQlptEs9bXyu9McJjzbx0uXj3BenRULASreccFej0L1RU6jDlk +D3brBn24UISaFRZoB7jsjok= +-----END CERTIFICATE----- --- a/test/certs/mkcert.sh +++ b/test/certs/mkcert.sh @@ -106,6 +106,18 @@ genroot() { } genca() { + local OPTIND=1 + + while getopts c: o + do + case $o in + c) certpol="$OPTARG";; + *) echo "Usage: $0 genca [-c policyoid] cn keyname certname cakeyname cacertname [EKU]" >&2 + return 1;; + esac + done + + shift $((OPTIND - 1)) local cn=$1; shift local key=$1; shift local cert=$1; shift @@ -122,6 +134,10 @@ genca() { if [ -n "$NC" ]; then exts=$(printf "%s\nnameConstraints = %s\n" "$exts" "$NC") fi + if [ -n "$certpol" ]; then + exts=$(printf "%s\ncertificatePolicies = %s\n" "$exts" "$certpol") + fi + csr=$(req "$key" "CN = $cn") || return 1 echo "$csr" | cert "$cert" "$exts" -CA "${cacert}.pem" -CAkey "${cakey}.pem" \ --- a/test/certs/setup.sh +++ b/test/certs/setup.sh @@ -357,3 +357,9 @@ REQMASK=MASK:0x800 ./mkcert.sh req badal "DNS.1 = www.ok.good.com" "DNS.2 = bad.ok.good.com" \ "email.1 = good@good.org" "email.2 = any@good.com" \ "IP = 127.0.0.1" "IP = 192.168.0.1" + +# certificatePolicies extension +./mkcert.sh genca -c "1.3.6.1.4.1.16604.998855.1" "CA" ca-key ca-pol-cert root-key root-cert +./mkcert.sh geneeextra server.example ee-key ee-cert-policies ca-key ca-cert "certificatePolicies=1.3.6.1.4.1.16604.998855.1" +# We can create a cert with a duplicate policy oid - but its actually invalid! +./mkcert.sh geneeextra server.example ee-key ee-cert-policies-bad ca-key ca-cert "certificatePolicies=1.3.6.1.4.1.16604.998855.1,1.3.6.1.4.1.16604.998855.1" --- a/test/recipes/25-test_verify.t +++ b/test/recipes/25-test_verify.t @@ -30,7 +30,7 @@ sub verify { run(app([@args])); } -plan tests => 129; +plan tests => 131; # Canonical success ok(verify("ee-cert", "sslserver", ["root-cert"], ["ca-cert"]), @@ -384,3 +384,14 @@ ok(verify("some-names2", "sslserver", [" ok(verify("some-names2", "sslserver", ["many-constraints"], ["many-constraints"], ), "Not too many names and constraints to check (3)"); + +# Certificate Policies +ok(verify("ee-cert-policies", "sslserver", ["root-cert"], ["ca-pol-cert"], + "-policy_check", "-policy", "1.3.6.1.4.1.16604.998855.1", + "-explicit_policy"), + "Certificate policy"); + +ok(!verify("ee-cert-policies-bad", "sslserver", ["root-cert"], ["ca-pol-cert"], + "-policy_check", "-policy", "1.3.6.1.4.1.16604.998855.1", + "-explicit_policy"), + "Bad certificate policy");
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