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NULL Pointer Dereference Affecting libxml2 package, versions <2.9.4+dfsg1-6.1ubuntu1.2

Severity

 Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    2.98% (91st percentile)

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  • Snyk ID SNYK-UBUNTU1804-LIBXML2-429573
  • published 22 Jul 2018
  • disclosed 19 Jul 2018
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Introduced: 19 Jul 2018

CVE-2018-14404 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Ubuntu:18.04 libxml2 to version 2.9.4+dfsg1-6.1ubuntu1.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 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.