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Out-of-bounds Read Affecting expat package, versions <0:2.1.0-12.amzn2

medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.51% (77th percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-AMZN2-EXPAT-1686182
  • published 27 Sep 2021
  • disclosed 4 Sep 2019
Report a new vulnerability Found a mistake?

Introduced: 4 Sep 2019

CVE-2019-15903 Open this link in a new tab
CWE-125 Open this link in a new tab
CWE-776 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 expat to version 0:2.1.0-12.amzn2 or higher.
This issue was patched in ALAS2-2020-1513.

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:2 relevant fixed versions and status.

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

References