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CVE-2020-14346

Publication date 26 August 2020

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 before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. 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 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 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-server 20.04 LTS focal
Fixed 2:1.20.8-2ubuntu2.3
18.04 LTS bionic
Fixed 2:1.19.6-1ubuntu4.5
16.04 LTS xenial
Fixed 2:1.18.4-0ubuntu0.9
14.04 LTS trusty
xorg-server-hwe-16.04 20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 2:1.19.6-1ubuntu4.1~16.04.3
14.04 LTS trusty Not in release
xorg-server-hwe-18.04 20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 2:1.20.8-2ubuntu2.2~18.04.2
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-utopic 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 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 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 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

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
xorg-server

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-4488-1
    • X.Org X Server vulnerabilities
    • 2 September 2020
    • USN-4488-2
    • X.Org X Server vulnerabilities
    • 9 September 2020

Other references