Use After Free Affecting expat package, versions <0:2.2.5-8.el8_6.4


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.06% (85th percentile)

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  • Snyk IDSNYK-RHEL8-EXPAT-6200813
  • published26 Jan 2024
  • disclosed24 Oct 2022

Introduced: 24 Oct 2022

CVE-2022-43680  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 expat to version 0:2.2.5-8.el8_6.4 or higher.
This issue was patched in RHSA-2024:0421.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.

References

CVSS Scores

version 3.1