Your submission was sent successfully! Close

You have successfully unsubscribed! Close

CVE-2021-3517

Published: 19 May 2021

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.

Notes

AuthorNote
ccdm94
same patch as the one for CVE-2020-24977. As per a comment
made by upstream in issue 235 (related to this CVE) both
the issues fixed by bf22713507 are caused by the same
underlying problem.

Priority

Medium

CVSS 3 base score: 8.6

Status

Package Release Status
libxml2
Launchpad, Ubuntu, Debian
bionic
Released (2.9.4+dfsg1-6.1ubuntu1.4)
focal
Released (2.9.10+dfsg-5ubuntu0.20.04.1)
groovy
Released (2.9.10+dfsg-5ubuntu0.20.10.2)
hirsute
Released (2.9.10+dfsg-6.3ubuntu0.1)
impish Not vulnerable
(2.9.10+dfsg-6.7)
jammy Not vulnerable
(2.9.10+dfsg-6.7)
precise Ignored
(end of ESM support, was needs-triage)
trusty
Released (2.9.1+dfsg1-3ubuntu4.13+esm2)
upstream
Released (2.9.10+dfsg-6.6, 2.9.11)
xenial
Released (2.9.3+dfsg1-1ubuntu0.7+esm1)
Patches:
upstream: https://gitlab.gnome.org/GNOME/libxml2/-/commit/bf22713507fe1fc3a2c4b525cf0a88c2dc87a3a2