CVE-2011-3200

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 20.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-09-06 · updated 2026-06-16
Weakness: CWE-119

Description

Stack-based buffer overflow in the parseLegacySyslogMsg function in tools/syslogd.c in rsyslogd in rsyslog 4.6.x before 4.6.8 and 5.2.0 through 5.8.4 might allow remote attackers to cause a denial of service (application exit) via a long TAG in a legacy syslog message.

Affected products

rsyslog: 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5 (+45)

References

http://git.adiscon.com/?p=rsyslog.git%3Ba=commit%3Bh=1ca6cc236d1dabf1633238b873fb1c057e52f95e
http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065837.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065941.html
http://lists.opensuse.org/opensuse-updates/2011-09/msg00013.html
http://secunia.com/advisories/45922
http://secunia.com/advisories/46027
http://securitytracker.com/id?1026000
http://www.mandriva.com/security/advisories?name=MDVSA-2011:134
http://www.redhat.com/support/errata/RHSA-2011-1247.html
http://www.rsyslog.com/potential-dos-with-malformed-tag/
http://www.securityfocus.com/bid/49413
https://bugzilla.redhat.com/show_bug.cgi?id=727644

Get alerted when CVE-2011-3200 or the next vulnerability affects your stack