CVE-2023-43090

Publication date 18 September 2023

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

A vulnerability was found in GNOME Shell. GNOME Shell's lock screen allows an unauthenticated local user to view windows of the locked desktop session by using keyboard shortcuts to unlock the restricted functionality of the screenshot tool.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gnome-shell	23.10 mantic	Fixed 45.0-1ubuntu1
	23.04 lunar	Fixed 44.3-0ubuntu1.1
	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

Notes

mdeslaur

While the upstream bug says gnome-shell 42 is affected, I could not reproduce the issue on jammy

Patch details

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

Package	Patch details
gnome-shell	Upstream: https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2944

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