[Trisquel-security] [USN-1953-1] polkit vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Wed Sep 18 17:05:41 CEST 2013

Ubuntu Security Notice USN-1953-1
September 18, 2013

policykit-1 vulnerability

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

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS


polkit could be tricked into giving out improper authorization.

Software Description:
- policykit-1: framework for managing administrative policies and privileges


It was discovered that polkit didn't allow applications to use the pkcheck
tool in a way which prevented a race condition in the UID lookup. A local
attacker could use this flaw to possibly escalate privileges.

Update instructions:

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

Ubuntu 13.04:
  policykit-1                     0.105-1ubuntu1.1

Ubuntu 12.10:
  policykit-1                     0.104-2ubuntu1.1

Ubuntu 12.04 LTS:
  policykit-1                     0.104-1ubuntu1.1

Ubuntu 10.04 LTS:
  policykit-1                     0.96-2ubuntu0.2

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


Package Information:

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