CVE-2011-1488

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-11-14 · updated 2026-06-16
Weakness: CWE-772

Description

A memory leak in 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.

Affected products

Debian Linux: 8.0, 9.0, 10.0
Opensuse: 11.4
rsyslog: before 5.7.6 — fixed in 5.7.6

How to fix

Upgrade to a fixed version: rsyslog 5.7.6. Check the vendor advisory for mitigations.

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
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

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