Security restrictions bypass in gnome-shell

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU81043

Risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-43090

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

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

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?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.