Vulnerability identifier: #VU94782

Vulnerability risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-36472

CWE-ID: CWE-254

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
gnome-shell
Client/Desktop applications / Software for system administration

Vendor: Gnome Development Team

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to missing access restrictions in portal helper, which can be launched automatically without user confirmation based on network responses provided by an adversary in the local network (e.g. WI-Fi). A remote attacker can consume system resources or perform other actions depending on the JavaScript code's behavior.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

gnome-shell: 45.0 - 45.7

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External links
http://gitlab.gnome.org/GNOME/gnome-shell/-/issues/7688

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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