Out-of-bounds Write Affecting libxml2 package, versions <2.9.4+dfsg1-2.2+deb9u4


0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 1.23% (86th percentile)
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NVD
8.6 high
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SUSE
8.6 high
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Red Hat
8.6 high

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  • Snyk ID SNYK-DEBIAN9-LIBXML2-1277339
  • published 28 Apr 2021
  • disclosed 19 May 2021

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.

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.

References