USN-3892-1: GDM vulnerability
gdm3 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
Summary
GDM could give unauthorized access to a different user.
Software Description
- 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.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.10
- gdm3 – 3.30.1-1ubuntu5.1
- Ubuntu 18.04 LTS
- gdm3 – 3.28.3-0ubuntu18.04.4
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
Source: USN-3892-1: GDM vulnerability
