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CVE-2013-7273

gdm: local DoS possible when cancelling and disable-user-list=true when fallback greeter is used

GNOME Display Manager (gdm) 3.4.1 and earlier, when disable-user-list is set to true, allows local users to cause a denial of service (unable to login) by pressing the cancel button after entering a user name.

CVSS 2.0 · 2.1 Low EPSS < 1% KEV · Not listed
Vendors
Gnome
Products
Gnome Display Manager
CVE-2010-2387

gdm: logs user passwors that contain invalid UTF8-encoded characters, in debug mode

vicious-extensions/ve-misc.c in GNOME Display Manager (gdm) 2.20.x before 2.20.11, when GDM debug is enabled, logs the user password when it contains invalid UTF8 encoded characters, which might allow local users to gain privileges by reading the information from syslog logs.

CVSS 2.0 · 1.9 Low EPSS < 1% KEV · Not listed
Vendors
Gnome
Products
Gnome Display Manager
CVE-2013-4169

gdm: TOCTTOU race condition on /tmp/.X11-unix

GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X11-unix/.

CVSS 2.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Gnome Redhat
Products
Gnome Display Manager Enterprise Linux
CVE-2020-27837

gdm: lock screen bypass when autologin is set

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 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Gnome
Products
Gnome Display Manager
CVE-2020-16125

gdm3 would start gnome-initial-setup if it cannot contact accountservice

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 3.1 · 7.2 High EPSS 1.1% KEV · Not listed
Vendors
Gnome Redhat
Products
Gnome Display Manager Enterprise Linux
CVE-2019-3825

gdm: lock screen bypass when timed login is enabled

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 3.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Canonical Gnome Redhat
Products
Ubuntu Linux Gnome Display Manager Enterprise Linux
CVE-2018-14424

gdm: use-after-free in the GDM daemon

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 3.0 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Gnome
Products
Gnome Display Manager
CVE-2017-12164

gdm: lock screen can be circumvented when autologin is set

A flaw was discovered in gdm 3.24.1 where gdm greeter was no longer setting the ran_once boolean during autologin. If autologin was enabled for a victim, an attacker could simply select 'login as another user' to unlock their screen.

CVSS 3.0 · 4.1 Medium EPSS < 1% KEV · Not listed
Vendors
Gnome
Products
Gnome Display Manager