CVE-2023-6377

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xorg	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Ignored end of standard support
xorg-hwe-16.04	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	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	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	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	24.10 oracular	Fixed 2:21.1.10-1ubuntu1
	24.04 LTS noble	Fixed 2:21.1.10-1ubuntu1
	23.10 mantic	Fixed 2:21.1.7-3ubuntu2.4
	23.04 lunar	Fixed 2:21.1.7-1ubuntu3.4
	22.04 LTS jammy	Fixed 2:21.1.4-2ubuntu1.7~22.04.5
	20.04 LTS focal	Fixed 2:1.20.13-1ubuntu1~20.04.12
	18.04 LTS bionic	Fixed 2:1.19.6-1ubuntu4.15+esm3 Ubuntu Pro
	16.04 LTS xenial	Fixed 2:1.18.4-0ubuntu0.12+esm8 Ubuntu Pro
	14.04 LTS trusty	Ignored end of ESM support, was needs-triage
xorg-server-hwe-16.04	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Not in release
xorg-server-hwe-18.04	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
xorg-server-lts-utopic	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	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	Ignored end of standard support
xorg-server-lts-vivid	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	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	Ignored end of standard support
xorg-server-lts-wily	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	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	Ignored end of standard support
xorg-server-lts-xenial	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	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	Ignored end of standard support
xwayland	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Fixed 2:23.2.0-1ubuntu0.3
	23.04 lunar	Fixed 2:22.1.8-1ubuntu1.3
	22.04 LTS jammy	Fixed 2:22.1.1-1ubuntu0.9
	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 xwayland package contains parts of 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-6555-1
X.Org X Server vulnerabilities
13 December 2023

USN-6555-2
X.Org X Server vulnerabilities
13 December 2023

Other references

https://www.cve.org/CVERecord?id=CVE-2023-6377