<p>Upgrade <code>Amazon-Linux:2</code> <code>libxml2</code> to version 0:2.9.1-6.amzn2.5.7 or higher.<br>This issue was patched in <code>ALAS2-2023-1996</code>.</p>

Integer Overflow or Wraparound Affecting libxml2 package, versions <0:2.9.1-6.amzn2.5.7

Snyk CVSS

Attack Complexity Low

Availability High

Threat Intelligence

EPSS 0.29% (69^th percentile)

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Snyk ID SNYK-AMZN2-LIBXML2-3367450
published 22 Mar 2023
disclosed 23 Nov 2022

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Introduced: 23 Nov 2022

CVE-2022-40303 Open this link in a new tab CWE-190 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libxml2 to version 0:2.9.1-6.amzn2.5.7 or higher.
This issue was patched in ALAS2-2023-1996.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.