CVE-2021-3472

Publication date 13 April 2021

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
xorg 22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
xorg-hwe-16.04 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
xorg-hwe-18.04 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server 22.04 LTS jammy
Fixed 2:1.20.11-1ubuntu1
21.10 impish
Fixed 2:1.20.11-1ubuntu1
21.04 hirsute
Fixed 2:1.20.11-1ubuntu1
20.10 groovy
Fixed 2:1.20.9-2ubuntu1.3
20.04 LTS focal
Fixed 2:1.20.9-2ubuntu1.2~20.04.2
18.04 LTS bionic
Fixed 2:1.19.6-1ubuntu4.9
16.04 LTS xenial
Fixed 2:1.18.4-0ubuntu0.12
14.04 LTS trusty
xorg-server-hwe-16.04 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 2:1.19.6-1ubuntu4.1~16.04.6
14.04 LTS trusty Not in release
xorg-server-hwe-18.04 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 2:1.20.8-2ubuntu2.2~18.04.5
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-utopic 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-vivid 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-wily 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-xenial 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xwayland 22.04 LTS jammy
Fixed 2:21.1.1-0ubuntu1
21.10 impish
Fixed 2:21.1.1-0ubuntu1
21.04 hirsute
Fixed 2:21.1.1-0ubuntu1
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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Notes

mdeslaur

xorg server is actually the xorg-server package the xorg package only contains docs

alexmurray

Also known as ZDI-CAN-12549

Severity score breakdown

Parameter Value
Base score 7.8 · High
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

References

Related Ubuntu Security Notices (USN)

    • USN-4905-1
    • X.Org X Server vulnerability
    • 13 April 2021
    • USN-4905-2
    • X.Org X Server vulnerability
    • 30 June 2021

Other references