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NULL Pointer Dereference Affecting libxml2 package, versions <0:2.9.1-6.amzn2.4.1

Severity

 Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.98% (92nd percentile)

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  • Snyk IDSNYK-AMZN2-LIBXML2-1682825
  • published27 Sept 2021
  • disclosed19 Jul 2018
Report a new vulnerability Found a mistake?

Introduced: 19 Jul 2018

CVE-2018-14404  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 libxml2 to version 0:2.9.1-6.amzn2.4.1 or higher.
This issue was patched in ALAS2-2020-1466.

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.

A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application.