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Gentoo Linux Security Advisory                           GLSA 202312-05
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                                           https://security.gentoo.org/
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 Severity: High
    Title: libssh: Multiple Vulnerabilities
     Date: December 22, 2023
     Bugs: #810517, #905746
       ID: 202312-05

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Synopsis
========

Multiple vulnerabilities have been discovered in libssh, the worst of
which could lead to remote code execution.

Background
==========

libssh is a multiplatform C library implementing the SSHv2 protocol on
client and server side.

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

Package          Vulnerable    Unaffected
---------------  ------------  ------------
net-libs/libssh  < 0.10.5      >= 0.10.5

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

Multiple vulnerabilities have been discovered in libssh. Please review
the CVE identifiers referenced below for details.

Impact
======

Please review the referenced CVE identifiers for details.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libssh users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-libs/libssh-0.10.5"

References
==========

[ 1 ] CVE-2021-3634
      https://nvd.nist.gov/vuln/detail/CVE-2021-3634
[ 2 ] CVE-2023-1667
      https://nvd.nist.gov/vuln/detail/CVE-2023-1667
[ 3 ] CVE-2023-2283
      https://nvd.nist.gov/vuln/detail/CVE-2023-2283
[ 4 ] GHSL-2023-085

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

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

 https://security.gentoo.org/glsa/202312-05

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 2023 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/