=========================================================================Ubuntu Security Notice USN-3892-1
February 20, 2019

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

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

References:
  https://ubuntu.com/security/notices/USN-3892-1
  CVE-2019-3825

Package Information:
  https://launchpad.net/ubuntu/+source/gdm3/3.30.1-1ubuntu5.1
  https://launchpad.net/ubuntu/+source/gdm3/3.28.3-0ubuntu18.04.4

Ubuntu 3892-1: GDM vulnerability

February 20, 2019
GDM could give unauthorized access to a different user.

Summary

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

References

  https://ubuntu.com/security/notices/USN-3892-1

  CVE-2019-3825

Severity
February 20, 2019

Package Information

  https://launchpad.net/ubuntu/+source/gdm3/3.30.1-1ubuntu5.1   https://launchpad.net/ubuntu/+source/gdm3/3.28.3-0ubuntu18.04.4

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