CVE-2020-14344

Publication date 5 August 2020

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libx11	20.04 LTS focal	Fixed 2:1.6.9-2ubuntu1.1
	18.04 LTS bionic	Fixed 2:1.6.4-3ubuntu0.3
	16.04 LTS xenial	Fixed 2:1.6.3-1ubuntu2.2
	14.04 LTS trusty	Fixed 2:1.6.2-1ubuntu2.1+esm1 Ubuntu Pro

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Notes

seth-arnold

Debian triage notes the original fixes introduced regression

mdeslaur

a second regression was reported in bug 117

Patch details

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

Package	Patch details
libx11	Upstream: 0e6561e Upstream: 388b303 Upstream: 2fcfcc4 Upstream: 1a566c9 Upstream: 1703b9f Upstream: 93fce3f Upstream: d15c24c

Severity score breakdown

Parameter	Value
Base score	6.7 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H