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CVE-2020-14347

Publication date 5 August 2020

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

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

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