Security restrictions bypass in GNOME Display Manager

Published: 2019-02-14
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-3825
CWE ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software GNOME Display Manager Subscribe
Vendor Gnome Development Team

Security Advisory

This security advisory describes one low risk vulnerability.

1) Security restrictions bypass

Severity: Low

CVSSv3: 3.6 [CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-3825

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

Description

The vulnerability allows a physical attacker to bypass security restrictions on the system.

The vulnerability exists due to improper security restrictions imposed by the affected software when timed login is enabled. A local attacker with physical access can select the timed login user and wait for the timer to expire that allows to bypass security restrictions and gain access to the logged-in user’s session on the targeted system.

Mitigation

Update to version 3.31.4.

Vulnerable software versions

GNOME Display Manager: 3.0.0, 3.0.2, 3.0.3, 3.0.4, 3.1.2, 3.1.90, 3.1.91, 3.1.92, 3.2.0, 3.2.1, 3.2.1.1, 3.3.92, 3.3.92.1, 3.4.0, 3.4.0.1, 3.4.1, 3.6.2, 3.8.0, 3.8.1, 3.8.1.1, 3.8.3, 3.8.3.1, 3.8.4, 3.10.0.1, 3.12.1, 3.14.0, 3.14.1, 3.14.2, 3.16.1.1, 3.18.0, 3.20.0, 3.20.1, 3.21.2, 3.21.3, 3.21.4, 3.21.90, 3.21.91, 3.22.0, 3.22.1, 3.22.2, 3.22.3, 3.24.2, 3.26.0, 3.26.1, 3.26.2, 3.26.2.1, 3.27.3, 3.27.4, 3.27.90, 3.27.91, 3.27.92, 3.28.0, 3.28.1, 3.28.2, 3.28.3, 3.28.4, 3.29.1, 3.29.90, 3.29.91, 3.29.92, 3.30.0, 3.30.1, 3.30.2

CPE External links

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3825

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.