USN-3892-1: GDM vulnerability

20 February 2019

GDM could give unauthorized access to a different user.

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 18.10
Ubuntu 18.04

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

References