Integer Overflow or Wraparound Affecting expat package, versions <0:2.1.0-14.31.amzn1


medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.82% (82nd percentile)
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NVD
9.8 critical
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SUSE
7.5 high
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Red Hat
9.8 critical

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  • Snyk ID SNYK-AMZN201803-EXPAT-2945429
  • published 8 Jul 2022
  • disclosed 10 Jan 2022

How to fix?

Upgrade Amazon-Linux:2018.03 expat to version 0:2.1.0-14.31.amzn1 or higher.
This issue was patched in ALAS-2022-1603.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.