Security restrictions bypass in gnome-shell

Published: 2023-09-21

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2023-43090
CWE-ID	CWE-264
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	gnome-shell Client/Desktop applications / Software for system administration
Vendor	Gnome Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU81043

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2023-43090

CWE-ID:

Exploit availability:

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to certain key combinations remain active when the user session is locked. An attacker with physical access to device can activate the "single window mode" and "video" buttons in GNOME Screenshot utility by pressing twice the "V" then once the "W" key and record screen or make screenshots.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

gnome-shell: 43.0 - 44.4

Fixed software versions

CPE2.3

cpe:2.3:a:gnome:gnome-shell:44.4:*:*:*:*:*:*:*

External links

http://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6990
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1052067
http://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2944

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?