{"id":"CVE-2011-1951","aliases":["DEBIAN-CVE-2011-1951","EUVD-2011-1945","GHSA-7jqv-hh4c-ww3h","openSUSE-SU-2024:10493-1"],"status":"published","title":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using...","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02462,"percentile":0.84558,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-399"],"published":"2011-07-11T20:00:00Z","modified":"2026-10-23T17:47:32Z","fixes":[{"ecosystem":"Debian:12","package":"syslog-ng","fixed_in":["3.2.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"syslog-ng","fixed_in":["3.2.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"syslog-ng","fixed_in":["3.2.4-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"syslog-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"syslog-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"syslog-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.4-1"}]}]}],"products":[{"vendor":"oneidentity","product":"syslog-ng"}],"references":[{"url":"http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git%3Ba=commit%3Bh=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=709088","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Patch","Third Party Advisory","advisory","fix","report"]},{"url":"http://www.openwall.com/lists/oss-security/2011/05/26/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory","advisory","article","fix"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062107.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"http://www.securityfocus.com/bid/47800","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://secunia.com/advisories/45122","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1951"},{"url":"http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git;a=commit;h=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff"},{"url":"https://github.com/advisories/GHSA-7jqv-hh4c-ww3h"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-1951","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2011-0343","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-1951","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2011-1951","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","status":"published","published":"2011-07-11T20:00:00Z","modified":"2024-08-06T22:46:00.752Z","updated_at":"2026-11-02T14:35:38.321377Z"}],"euvd":[{"id":"EUVD-2011-1945","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","status":"published","published":"2011-07-11T20:00:00Z","modified":"2024-08-06T22:46:00Z","updated_at":"2026-11-03T01:55:54.666744Z"}],"ghsa":[{"id":"GHSA-7jqv-hh4c-ww3h","title":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using...","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","status":"published","published":"2022-05-13T01:26:29Z","modified":"2023-02-13T06:32:11Z","updated_at":"2026-11-02T14:54:07.010181Z"}],"nvd":[{"id":"CVE-2011-1951","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","status":"published","published":"2011-07-11T20:55:01.207Z","modified":"2026-06-16T23:30:27.32Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:02:09.182398Z"}],"osv":[{"id":"CVE-2011-1951","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","status":"published","published":"2011-07-11T20:55:01Z","modified":"2026-04-10T03:41:48.28395Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-1951","description":"lib/logmatcher.c in Balabit syslog-ng before 3.2.4, when the global flag is set and when using PCRE 8.12 and possibly other versions, allows remote attackers to cause a denial of service (memory consumption) via a message that does not match a regular expression.","status":"published","published":"2011-07-11T20:55:01.207Z","modified":"2026-10-23T17:47:32.949444677Z","updated_at":"2026-11-02T15:45:24.612044Z"},{"id":"openSUSE-SU-2024:10493-1","title":"syslog-ng-3.8.1-2.2 on GA media","description":"These are all security issues fixed in the syslog-ng-3.8.1-2.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:44:30.949014Z","updated_at":"2026-11-02T16:58:34.487567Z"}]}}