Ubuntu 2002-1: Keystone vulnerabilities

    Date23 Oct 2013
    CategoryUbuntu
    37
    Posted ByLinuxSecurity Advisories
    Keystone would improperly grant access to invalid tokens under certain circumstances.
    
    ==========================================================================
    Ubuntu Security Notice USN-2002-1
    October 23, 2013
    
    keystone vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 13.04
    - Ubuntu 12.10
    
    Summary:
    
    Keystone would improperly grant access to invalid tokens under certain
    circumstances.
    
    Software Description:
    - keystone: OpenStack identity service
    
    Details:
    
    Chmouel Boudjnah discovered that Keystone did not properly invalidate user
    tokens when a tenant was disabled which allowed an authenticated user to
    retain access via the token. (CVE-2013-4222)
    
    Kieran Spear discovered that Keystone did not properly verify PKI tokens
    when performing revocation when using the memcache and KVS backends. An
    authenticated attacker could exploit this to bypass intended access
    restrictions. (CVE-2013-4294)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 13.04:
      python-keystone                 1:2013.1.3-0ubuntu1.1
    
    Ubuntu 12.10:
      python-keystone                 2012.2.4-0ubuntu3.2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2002-1
      CVE-2013-4222, CVE-2013-4294
    
    Package Information:
      https://launchpad.net/ubuntu/+source/keystone/1:2013.1.3-0ubuntu1.1
      https://launchpad.net/ubuntu/+source/keystone/2012.2.4-0ubuntu3.2
    
    
    
    
    
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