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[gentoo-announce] [ GLSA 202408-13 ] Nokogiri: Denial of Service

Posted on 07 August 2024
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 202408-13
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https://security.gentoo.org/
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Severity: Normal
Title: Nokogiri: Denial of Service
Date: August 07, 2024
Bugs: #884863
ID: 202408-13

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Synopsis
========
A vulnerability has been discovered in Nokogiri, which can lead to a
denial of service.

Background
==========
Nokogiri is an HTML, XML, SAX, and Reader parser.

Affected packages
=================
Package Vulnerable Unaffected
----------------- ------------ ------------
dev-ruby/nokogiri < 1.13.10 >= 1.13.10

Description
===========
A denial of service vulnerability has been discovered in Nokogiri.
Please review the CVE identifier referenced below for details.

Impact
======
Nokogiri fails to check the return value from `xmlTextReaderExpand` in
the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a
null pointer exception when invalid markup is being parsed. For
applications using `XML::Reader` to parse untrusted inputs, this may
potentially be a vector for a denial of service attack.

Workaround
==========
Users may be able to search their code for calls to either
`XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if
they are affected.

Resolution
==========
All Nokogiri users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-ruby/nokogiri-1.13.10"

References
==========
[ 1 ] CVE-2022-23476
https://nvd.nist.gov/vuln/detail/CVE-2022-23476

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

https://security.gentoo.org/glsa/202408-13

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
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