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NULL Pointer Dereference Affecting python3-libxml2 package, versions <0:2.9.7-7.el8

Severity

 Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.98% (92nd percentile)

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  • Snyk IDSNYK-RHEL8-PYTHON3LIBXML2-3751461
  • published26 Jul 2021
  • disclosed18 Jun 2018
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Introduced: 18 Jun 2018

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

How to fix?

Upgrade RHEL:8 python3-libxml2 to version 0:2.9.7-7.el8 or higher.
This issue was patched in RHSA-2020:1827.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-libxml2 package and not the python3-libxml2 package as distributed by RHEL. See How to fix? for RHEL:8 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.