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NULL Pointer Dereference Affecting libxml2 package, versions <2.9.4+dfsg1-2.2+deb9u4

0.0
medium

Snyk CVSS

    Attack Complexity High
    Availability High

    Threat Intelligence

    EPSS 1.02% (84th percentile)
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NVD
5.9 medium
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-DEBIAN9-LIBXML2-1290156
  • published 6 May 2021
  • disclosed 14 May 2021
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Introduced: 6 May 2021

CVE-2021-3537 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Debian:9 libxml2 to version 2.9.4+dfsg1-2.2+deb9u4 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 Debian. See How to fix? for Debian:9 relevant fixed versions and status.

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.

References