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


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
4.77% (93rd percentile)

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  • Snyk IDSNYK-AMZN2-EXPATSTATIC-1686256
  • published27 Sept 2021
  • disclosed4 Sept 2019

Introduced: 4 Sep 2019

CVE-2019-15903  (opens in a new tab)
CWE-125  (opens in a new tab)
CWE-776  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 expat-static 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-static package and not the expat-static 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

CVSS Scores

version 3.1