Security restrictions bypass in GNOME Shell

1) Security features bypass

EUVDB-ID: #VU94782

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 - Security Features

Exploit availability: No

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

External links

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

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.