Stack-based buffer overflow in rsyslog - CVE-2011-3200
Published: September 6, 2011 / Updated: July 29, 2020
Vulnerability identifier: #VU32854
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2011-3200
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: rsyslog.com
Affected software:
rsyslog
rsyslog
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing a long TAG in a legacy syslog message. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2011-3200
Update to version 4.6.8.
Sources
- http://git.adiscon.com/?p=rsyslog.git;a=commit;h=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