- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202409-23
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: ZNC: Remote Code Execution
Date: September 24, 2024
Bugs: #935422
ID: 202409-23

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A vulnerability has been found in ZNC which could result in remote code execution.

Background
==========

ZNC is an advanced IRC bouncer.

Affected packages
=================

Package Vulnerable Unaffected
----------- ------------ ------------
net-irc/znc < 1.9.1 >= 1.9.1

Description
===========

ZNC's modtcl could allow for remote code execution via a KICK.

Impact
======

A vulnerable ZNC with the modtcl module loaded could be exploited for
remote code execution.

Workaround
==========

Unload the mod_tcl module.

Resolution
==========

All ZNC users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/znc-1.9.1"

References
==========

[ 1 ] CVE-2024-39844
https://nvd.nist.gov/vuln/detail/CVE-2024-39844

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202409-23

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

License
=======

Copyright 2024 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5
-----BEGIN PGP SIGNATURE-----

iQIzBAEBCgAdFiEEpqTA6ABLMxh/aChGFMQkOaVy+9kFAmbySp8ACgkQFMQkOaVy +9nt0g/+MMzlOAhBcomBtk/7k77hKLLlVuYA5tbXDgu9whjAJIwbGwk/nLKnAwZS 9mji3hP5P0EKluBiA7/xReUnyqxbtuS/YFCSczBtfLb5PM++aCgD/knilWm6Ovf/ JV3sB5y/dBDa/JIKI3cDpxRq06mll71FGC5ZCk/tJPmdDj+v+Fp6H0jOQPWWH8VY m63a8IaQJSxBHGyeXXXKeY6dSmwVd76AYUVpRJMQ1oqUQ4IqlpA1r2qhNnVDIbWC cwB4RPYMasH5LsBzCc8TeJ+nuGADTRcyxs7gxNQkcHMLW7vvqs7SFsCjPkxsQVya d1sCIYhMG8ixydWUagrSjGc8gxeqikXqYVotuvM3tTBtRIqJkmxbjOQiq3iowFyR kSl/ZFfpZLlbuwLIR7mZeCLx55O6/Kn27vRh65iK8ygv8gDWPjxMW49ITdEGJvWl OQiGKvqMkJ9JlRzPnPVtfLOPDsb8NmU3FNrsvWHI5czX5PGN8c+Xv5nb5ZLLMLmI 7DoEs15dMUTSvthnUuzcPwkky+SpbvuJCZHI8eL4GjvUP0DwerryTWGojBsb1Cz0 fxq4jcF2SLqQqiDuyMEv4CZA2OFycMhGF2uNT2CpqMRUjDhoiFh4WB1xO10fXb59 62sUCHP/XB4x9c2YcIbD3+x62RhcWi1eUxJNI8YocTYQjKv+PA0=
=EyBP
-----END PGP SIGNATURE-----

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)