Memory leak in rsyslog - CVE-2011-1488
Published: November 14, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30619
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1488
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when $RepeatedMsgReduction was enabled. A local attacker could use this flaw to cause a denial of the rsyslogd daemon service by crashing the service via a sequence of repeated log messages sent within short periods of time. A remote attacker can perform a denial of service attack.
Affected software
rsyslog
How to mitigate CVE-2011-1488
Update to version 5.7.6.
rsyslog - update to 5.7.6
External References
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00005.html
- https://access.redhat.com/security/cve/cve-2011-1488
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1488
- https://github.com/rsyslog/rsyslog/commit/1ef709cc97d54f74d3fdeb83788cc4b01f4c6a2a
- https://security-tracker.debian.org/tracker/CVE-2011-1488