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NULL Pointer Dereference Affecting libxml2 package, versions <0:2.9.1-6.4.40.amzn1

Severity

 Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
3.68% (89th percentile)

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  • Snyk IDSNYK-AMZN201803-LIBXML2-1723849
  • 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:2018.03 libxml2 to version 0:2.9.1-6.4.40.amzn1 or higher.
This issue was patched in ALAS-2020-1415.

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:2018.03 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.