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Debian LTS Advisory DLA-4322-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Lukas Märdian
October 05, 2025 https://wiki.debian.org/LTS
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Package : log4cxx
Version : 0.11.0-2+deb11u1
CVE ID : CVE-2025-54812 CVE-2025-54813
Debian Bug : 1111879 1111881
Multiple vulnerabilities were discovered in log4cxx, a logging library
for C++ that is compatible with the JAVA log4j framework.
CVE-2025-54812
When using HTMLLayout, logger names are not properly escaped when
writing out to the HTML file. If untrusted data is used to retrieve
the name of a logger, an attacker could theoretically inject HTML or
Javascript in order to hide information from logs or steal data from
the user.
CVE-2025-54813
When using JSONLayout, not all payload bytes are properly escaped.
If an attacker-supplied message contains certain non-printable
characters, these will be passed along in the message and written out
as part of the JSON message. This may prevent applications that
consume these logs from correctly interpreting the information within
them.
For Debian 11 bullseye, these problems have been fixed in version
0.11.0-2+deb11u1.
We recommend that you upgrade your log4cxx packages.
For the detailed security status of log4cxx please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/log4cxx
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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