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[gentoo-announce] [ GLSA 202210-38 ] Expat: Denial of Service

Posted on 31 October 2022
Gentoo-announce

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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
security@gentoo.org 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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