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CVE-2021-3541

Published: 18 May 2021

A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.

Notes

AuthorNote
avital
Not reproducible in 2.9.4+dfsg1-6.1 and prior

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
libxml2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
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)
trusty Not vulnerable
(code not present)
upstream
Released (2.9.10+dfsg-6.7, 2.9.11)
xenial Not vulnerable
(code not present)
jammy Not vulnerable
(2.9.10+dfsg-6.7)
Patches:
upstream: https://gitlab.gnome.org/GNOME/libxml2/-/commit/8598060bacada41a0eb09d95c97744ff4e428f8e

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H