Use After Free Affecting expat package, versions <0:2.2.5-10.el8_7.1


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
2.26% (81st percentile)

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  • Snyk IDSNYK-ALMALINUX8-EXPAT-5619818
  • published28 May 2023
  • disclosed23 Jan 2023

Introduced: 23 Jan 2023

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

How to fix?

Upgrade AlmaLinux:8 expat to version 0:2.2.5-10.el8_7.1 or higher.
This issue was patched in ALSA-2023:0103.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by AlmaLinux. See How to fix? for AlmaLinux: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 Base Scores

version 3.1