Gnome: >> Gnome Display Manager >> 3.14.2 Security Vulnerabilities
A flaw was found in GDM in versions prior to 3.38.2.1. A race condition in the handling of session shutdown makes it possible to bypass the lock screen for a user that has autologin enabled, accessing their session without authentication. This is similar to CVE-2017-12164, but requires more difficult conditions to exploit.
CVSS Score
6.4
EPSS Score
0.001
Published
2020-12-28
gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can't contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.
CVSS Score
7.2
EPSS Score
0.176
Published
2020-11-10
gdm3 3.14.2 and possibly later has an information leak before screen lock
CVSS Score
2.4
EPSS Score
0.002
Published
2019-11-05
A vulnerability was discovered in gdm before 3.31.4. When timed login is enabled in configuration, an attacker could bypass the lock screen by selecting the timed login user and waiting for the timer to expire, at which time they would gain access to the logged-in user's session.
CVSS Score
6.3
EPSS Score
0.001
Published
2019-02-06
The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.
CVSS Score
7.8
EPSS Score
0.001
Published
2018-08-14
GNOME Display Manager (gdm) before 3.18.2 allows physically proximate attackers to bypass the lock screen by holding the Escape key.
CVSS Score
7.2
EPSS Score
0.001
Published
2015-11-24