Integer Overflow or Wraparound Affecting expat package, versions <2.4.1-2ubuntu0.1


medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 1.01% (84th percentile)
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NVD
9.8 critical
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SUSE
8.1 high
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Red Hat
9.8 critical

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  • Snyk ID SNYK-UBUNTU2110-EXPAT-2359558
  • published 25 Jan 2022
  • disclosed 24 Jan 2022

How to fix?

Upgrade Ubuntu:21.10 expat to version 2.4.1-2ubuntu0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Ubuntu. See How to fix? for Ubuntu:21.10 relevant fixed versions and status.

Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.