[ GLSA 202210-38 ] Expat: Denial of Service

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Gentoo Linux Security Advisory                           GLSA 202210-38
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                                           https://security.gentoo.org/
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 Severity: Low
    Title: Expat: Denial of Service
     Date: October 31, 2022
     Bugs: #878271
       ID: 202210-38

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Synopsis
========

A vulnerability has been found in Expat which could result in denial of
service.

Background
==========

Expat is a set of XML parsing libraries.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/expat             < 2.5.0                      >= 2.5.0

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

In certain out-of-memory situations, Expat may free memory before it
should, leading to a use-after-free.

Impact
======

A use-after-free can result in denial of service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Expat users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/expat-2.5.0"

References
==========

[ 1 ] CVE-2022-43680
      https://nvd.nist.gov/vuln/detail/CVE-2022-43680

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

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

 https://security.gentoo.org/glsa/202210-38

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
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2022 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

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