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[SECURITY] [DLA 3016-1] rsyslog security update



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Debian LTS Advisory DLA-3016-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                      Sylvain Beucler
May 20, 2022                                  https://wiki.debian.org/LTS
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Package        : rsyslog
Version        : 8.24.0-1+deb9u2
CVE ID         : CVE-2018-16881 CVE-2022-24903
Debian Bug     : 1010619

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:
https://security-tracker.debian.org/tracker/rsyslog

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