{"id":"CVE-2013-4073","aliases":["BELL-CVE-2013-4073","DSA-2738-1","DSA-2809-1","EUVD-2013-4004","GHSA-3gpq-xx45-4rr9","MGASA-2013-0229","RHSA-2013:1090","RHSA-2013:1103","RHSA-2013:1137"],"status":"published","title":"The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1...","description":"The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02757,"percentile":0.86339,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-310"],"published":"2013-07-26T11:29:37Z","modified":"2026-06-26T12:21:45Z","fixes":[{"ecosystem":"Mageia:2","package":"ruby","fixed_in":["1.8.7.p358-1.3.mga2"],"sources":["osv"]},{"ecosystem":"Mageia:3","package":"ruby","fixed_in":["1.9.3.p448-1.mga3"],"sources":["osv"]},{"ecosystem":"Mageia:3","package":"ruby-linecache19","fixed_in":["0.5.13-5.1.mga3"],"sources":["osv"]},{"ecosystem":"Mageia:3","package":"ruby-ruby-debug-base19","fixed_in":["0.11.26-5.1.mga3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:5::server","package":"ruby","fixed_in":["0:1.8.5-31.el5_9"],"sources":["osv"]},{"ecosystem":"Red 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OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2013-08-18T01:00:00Z","modified":"2024-08-06T16:30:49.912Z","updated_at":"2026-11-02T14:34:58.193873Z"}],"euvd":[{"id":"EUVD-2013-4004","description":"The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2013-08-18T01:00:00Z","modified":"2024-08-06T16:30:49Z","updated_at":"2026-11-03T01:56:33.227006Z"}],"ghsa":[{"id":"GHSA-3gpq-xx45-4rr9","title":"The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1...","description":"The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2022-05-14T03:07:51Z","modified":"2025-04-11T04:14:03Z","updated_at":"2026-11-02T15:01:14.490744Z"}],"nvd":[{"id":"CVE-2013-4073","description":"The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '\\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.","status":"published","published":"2013-08-18T02:52:22.917Z","modified":"2026-06-16T23:56:34.39Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-310"],"updated_at":"2026-11-02T14:02:35.248411Z"}],"osv":[{"id":"BELL-CVE-2013-4073","title":"CVE-2013-4073 does not affect BellSoft software","status":"withdrawn","published":"2013-08-18T02:52:00Z","modified":"2026-01-28T07:18:55.978475Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium"}],"updated_at":"2026-11-02T15:28:13.47097Z"},{"id":"DSA-2738-1","title":"ruby1.9.1 - several","status":"published","published":"2013-08-18T00:00:00Z","modified":"2026-03-09T01:22:38.178576Z","updated_at":"2026-11-02T15:46:15.489951Z"},{"id":"DSA-2809-1","title":"ruby1.8 - several","status":"published","published":"2013-12-04T00:00:00Z","modified":"2026-03-09T01:20:43.125224Z","updated_at":"2026-11-02T15:46:15.489951Z"},{"id":"MGASA-2013-0229","title":"Updated ruby packages fix CVE-2013-4073","description":"A vulnerability in Ruby's SSL client that could allow man-in-the-middle\nattackers to spoof SSL servers via valid certificate issued by a trusted\ncertification authority (CVE-2013-4073).\n","status":"published","published":"2013-07-26T11:29:37Z","modified":"2026-04-16T06:26:26.314878369Z","updated_at":"2026-11-02T15:49:39.121227Z"},{"id":"RHSA-2013:1090","title":"Red Hat Security Advisory: ruby security update","status":"published","published":"2024-09-13T08:26:36Z","modified":"2026-06-26T12:21:45.253700368Z","updated_at":"2026-11-02T15:53:01.993625Z"},{"id":"RHSA-2013:1103","title":"Red Hat Security Advisory: ruby193-ruby security update","status":"published","published":"2024-09-13T08:25:52Z","modified":"2026-01-29T10:55:25.445065Z","updated_at":"2026-11-02T15:53:01.993625Z"},{"id":"RHSA-2013:1137","title":"Red Hat Security Advisory: ruby193-ruby security update","status":"published","published":"2024-09-13T08:26:01Z","modified":"2026-01-29T10:55:25.4244Z","updated_at":"2026-11-02T15:53:01.993625Z"}]}}