{"id":"DEBIAN-CVE-2011-1951","details":"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.","modified":"2026-09-14T06:47:24.165471749Z","published":"2011-07-11T20:55:01.207Z","upstream":["CVE-2011-1951"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2011-1951"}],"affected":[{"package":{"name":"syslog-ng","ecosystem":"Debian:12","purl":"pkg:deb/debian/syslog-ng?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.4-1"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-1951.json"}},{"package":{"name":"syslog-ng","ecosystem":"Debian:13","purl":"pkg:deb/debian/syslog-ng?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.4-1"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-1951.json"}},{"package":{"name":"syslog-ng","ecosystem":"Debian:14","purl":"pkg:deb/debian/syslog-ng?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.4-1"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-1951.json"}}],"schema_version":"1.9.0"}