| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| syslog-ng (PTS) | jessie, jessie (lts) | 3.5.6-2+deb8u2 | fixed |
| stretch (lts), stretch | 3.8.1-10+deb9u1 | fixed |
| buster | 3.19.1-5 | fixed |
| buster (security) | 3.19.1-5+deb10u1 | fixed |
| bullseye (security), bullseye | 3.28.1-2+deb11u1 | fixed |
| bookworm | 3.38.1-5 | fixed |
| sid, trixie | 4.4.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| syslog-ng | source | lenny | (not affected) | | | |
| syslog-ng | source | squeeze | (not affected) | | | |
| syslog-ng | source | (unstable) | 3.2.4-1 | low | | |
Notes
[squeeze] - syslog-ng <not-affected> (Only affects PCRE >= 8.12)
[lenny] - syslog-ng <not-affected> (Only affects PCRE >= 8.12)
http://git.balabit.hu/?p=bazsi/syslog-ng-3.2.git;a=commit;h=09710c0b105e579d35c7b5f6c66d1ea5e3a3d3ff