Debian Security Advisory

DLA-3016-1 rsyslog -- LTS security update

Date Reported:
20 May 2022
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 1010619.
In Mitre's CVE dictionary: CVE-2018-16881, CVE-2022-24903.
More information:

Several vulnerabilities were discovered in rsyslog, a system and kernel logging daemon. When a log server is configured to accept logs from remote clients through specific modules such as imptcp, an attacker can cause a denial of service (DoS) and possibly execute code on the server.

  • CVE-2018-16881

    A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.

  • CVE-2022-24903

    Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction.

For Debian 9 stretch, these problems have been fixed in version 8.24.0-1+deb9u2.

We recommend that you upgrade your rsyslog packages.

For the detailed security status of rsyslog please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: