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Use After Free Affecting libxml2 package, versions <0:2.9.7-9.el8_4.2

medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.15% (51st percentile)
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NVD
7.8 high
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SUSE
5.9 medium
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Red Hat
7.8 high

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  • Snyk ID SNYK-CENTOS8-LIBXML2-2111872
  • published 26 Jul 2021
  • disclosed 21 Apr 2021
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Introduced: 21 Apr 2021

CVE-2021-3516 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade Centos:8 libxml2 to version 0:2.9.7-9.el8_4.2 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 Centos. See How to fix? for Centos:8 relevant fixed versions and status.

There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.

References