[USN-1398-1] LTSP Display Manager vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Mon Mar 12 23:46:52 UTC 2012

Ubuntu Security Notice USN-1398-1
March 12, 2012

ldm vulnerability

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

- Ubuntu 11.10
- Ubuntu 11.04


LTSP Display Manager could be made to run programs as an administrator.

Software Description:
- ldm: LTSP display manager


Tenho Tuhkala discovered that the LTSP Display Manager (ldm) incorrectly
filtered keybindings. An attacker could use the default keybindings to
execute arbitrary commands as root at the login screen.

Update instructions:

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

Ubuntu 11.10:
  ldm                             2:2.2.4-0ubuntu1.1

Ubuntu 11.04:
  ldm                             2:2.2.1-0ubuntu1.1

After a standard system update you need to restart the LTSP Display Manager
to make all the necessary changes.


Package Information:

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