Loop with Unreachable Exit Condition ('Infinite Loop') Affecting libxml2 package, versions <0:2.9.1-6.amzn2.5.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.59% (80th percentile)

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  • Snyk IDSNYK-AMZN2-LIBXML2-1687799
  • published27 Sept 2021
  • disclosed21 Jan 2020

Introduced: 21 Jan 2020

CVE-2020-7595  (opens in a new tab)
CWE-835  (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.

xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation.

References

CVSS Scores

version 3.1