Memory Leak Affecting libxml2 package, versions <0:2.9.1-6.amzn2.5.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.43% (76th percentile)

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  • Snyk IDSNYK-AMZN2-LIBXML2-1687724
  • published27 Sept 2021
  • disclosed24 Dec 2019

Introduced: 24 Dec 2019

CVE-2019-19956  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 libxml2 to version 0:2.9.1-6.amzn2.5.1 or higher.
This issue was patched in ALAS2-2020-1534.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

CVSS Scores

version 3.1