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==========================================================================
Ubuntu Security Notice USN-1399-1
March 13, 2012

gdm-guest-session vulnerability
==========================================================================

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

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

gdm-guest-session could be made to delete files as the administrator.

Software Description:
- gdm-guest-session: gdm extension for guest session

Details:

Ryan Lortie discovered that gdm-guest-session improperly cleaned out
certain guest session files. A local attacker could use this issue to
delete arbitrary files.

Update instructions:

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

Ubuntu 11.04:
  gdm-guest-session               0.24ubuntu0.1

Ubuntu 10.10:
  gdm-guest-session               0.17ubuntu0.1

Ubuntu 10.04 LTS:
  gdm-guest-session               0.15ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1399-1
  CVE-2012-0943

Package Information:
  https://launchpad.net/ubuntu/+source/gdm-guest-session/0.24ubuntu0.1
  https://launchpad.net/ubuntu/+source/gdm-guest-session/0.17ubuntu0.1
  https://launchpad.net/ubuntu/+source/gdm-guest-session/0.15ubuntu0.1



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