<p>Upgrade <code>Centos:8</code> <code>libxml2</code> to version 0:2.9.7-9.el8_4.2 or higher.</p>

Out-of-bounds Write Affecting libxml2 package, versions <0:2.9.7-9.el8_4.2

Snyk CVSS

Attack Complexity Low

Availability High

Threat Intelligence

EPSS 1.23% (86^th percentile)

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Snyk ID SNYK-CENTOS8-LIBXML2-2113296
published 26 Jul 2021
disclosed 22 Apr 2021

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Introduced: 22 Apr 2021

CVE-2021-3517 Open this link in a new tab CWE-787 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 is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.