Privilege escalation in GNOME GLib

Published: 2024-05-10

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2024-34397
CWE-ID	CWE-345
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Gnome GLib Universal components / Libraries / Libraries used by multiple products
Vendor	Gnome Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Insufficient verification of data authenticity

EUVDB-ID: #VU89351

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-34397

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to missing authorization for D-Bus signals. When a GDBus-based client subscribes to signals from a trusted system service such as NetworkManager on a shared computer, other users of the same computer can send spoofed D-Bus signals that the GDBus-based client will wrongly interpret as having been sent by the trusted system service.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gnome GLib: 2.0 - 2.80.0

CPE2.3

External links

http://gitlab.gnome.org/GNOME/glib/-/issues/3268
http://www.openwall.com/lists/oss-security/2024/05/07/5

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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