Ubuntu 1953-1: polkit vulnerability

    Date18 Sep 2013
    CategoryUbuntu
    25
    Posted ByLinuxSecurity Advisories
    polkit could be tricked into giving out improper authorization.
    ==========================================================================
    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
    
    Summary:
    
    polkit could be tricked into giving out improper authorization.
    
    Software Description:
    - policykit-1: framework for managing administrative policies and privileges
    
    Details:
    
    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.
    
    References:
      http://www.ubuntu.com/usn/usn-1953-1
      CVE-2013-4288
    
    Package Information:
      https://launchpad.net/ubuntu/+source/policykit-1/0.105-1ubuntu1.1
      https://launchpad.net/ubuntu/+source/policykit-1/0.104-2ubuntu1.1
      https://launchpad.net/ubuntu/+source/policykit-1/0.104-1ubuntu1.1
      https://launchpad.net/ubuntu/+source/policykit-1/0.96-2ubuntu0.2
    
    
    
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