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CVE-2021-3472

Published: 13 April 2021

A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Notes

AuthorNote
mdeslaur
xorg server is actually the xorg-server package
the xorg package only contains docs
alexmurray
Also known as ZDI-CAN-12549

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
xorg
Launchpad, Ubuntu, Debian
impish Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
groovy Not vulnerable
(code not present)
hirsute Not vulnerable
(code not present)
trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable
(code not present)
xorg-hwe-16.04
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable
(code not present)
xorg-hwe-18.04
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Not vulnerable
(code not present)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

xorg-server
Launchpad, Ubuntu, Debian
impish
Released (2:1.20.11-1ubuntu1)
jammy
Released (2:1.20.11-1ubuntu1)
upstream Needs triage

bionic
Released (2:1.19.6-1ubuntu4.9)
focal
Released (2:1.20.9-2ubuntu1.2~20.04.2)
groovy
Released (2:1.20.9-2ubuntu1.3)
hirsute
Released (2:1.20.11-1ubuntu1)
trusty
Released (2:1.15.1-0ubuntu2.11+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2:1.18.4-0ubuntu0.12)
xorg-server-hwe-16.04
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (2:1.19.6-1ubuntu4.1~16.04.6)
xorg-server-hwe-18.04
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

bionic
Released (2:1.20.8-2ubuntu2.2~18.04.5)
xorg-server-lts-utopic
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

xorg-server-lts-vivid
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

xorg-server-lts-wily
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

upstream Needs triage

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

xorg-server-lts-xenial
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

xwayland
Launchpad, Ubuntu, Debian
impish
Released (2:21.1.1-0ubuntu1)
jammy
Released (2:21.1.1-0ubuntu1)
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute
Released (2:21.1.1-0ubuntu1)
trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H