[Trisquel-security] [USN-1950-1] Light Display Manager vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Thu Sep 12 17:30:28 CEST 2013

Ubuntu Security Notice USN-1950-1
September 12, 2013

lightdm vulnerability

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

- Ubuntu 13.04


Light Display Manager could be made to expose sensitive information.

Software Description:
- lightdm: Display Manager


It was discovered that Light Display Manager created .Xauthority files with
incorrect permissions. A local attacker could use this flaw to bypass
access restrictions.

Update instructions:

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

Ubuntu 13.04:
  lightdm                         1.6.0-0ubuntu3.1

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


Package Information:

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