1. Ubuntu Security Notices
  2. USN-3892-1

USN-3892-1: GDM vulnerability

Publication date

20 February 2019

Overview

GDM could give unauthorized access to a different user.

Releases

Packages

  • gdm3 - GNOME Display Manager

Details

Burghard Britzke discovered that GDM incorrectly handled certain configurations.
An attacker could possibly use this issue to get unauthorized access to
a different user.

Burghard Britzke discovered that GDM incorrectly handled certain configurations.
An attacker could possibly use this issue to get unauthorized access to
a different user.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.10 cosmic gdm3 –  3.30.1-1ubuntu5.1
18.04 bionic gdm3 –  3.28.3-0ubuntu18.04.4

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References

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