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Ubuntu Security Notice USN-3737-1
August 13, 2018

gdm3 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 18.04 LTS

Summary:

GDM could be made to crash or run programs as the administrator.

Software Description:
– gdm3: GNOME Display Manager

Details:

A use-after-free was discovered in GDM. A local user could exploit this to
cause a denial of service, or potentially execute arbitrary code as the
administrator.

Update instructions:

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

Ubuntu 18.04 LTS:
gdm3 3.28.2-0ubuntu1.4

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

References:
https://usn.ubuntu.com/usn/usn-3737-1
CVE-2018-14424

Package Information:
https://launchpad.net/ubuntu/+source/gdm3/3.28.2-0ubuntu1.4

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