USN-1766-1: pam-xdg-support vulnerability

18 March 2013

pam-xdg-support vulnerability

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

  • Ubuntu 12.10


pam-xdg-support could be made to run programs as an administrator.

Software Description

  • pam-xdg-support - PAM module for XDG_RUNTIME_DIR support


Zbigniew Tenerowicz and Sebastian Krzyszkowiak discovered that pam-xdg-support incorrectly handled the PATH environment variable. A local attacker could use this issue in combination with sudo to possibly escalate privileges.

Update instructions

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

Ubuntu 12.10
libpam-xdg-support - 0.2-0ubuntu1.1

To update your system, please follow these instructions:

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