Use After Free Affecting libxml2 package, versions <2.9.4+dfsg1-2.2+deb9u4


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.41% (75th percentile)

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  • Snyk IDSNYK-DEBIAN9-LIBXML2-1277342
  • published28 Apr 2021
  • disclosed18 May 2021

Introduced: 28 Apr 2021

CVE-2021-3518  (opens in a new tab)
CWE-416  (opens 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.

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

References

CVSS Scores

version 3.1