Ubuntu 2000-1: Nova vulnerabilities

    Date23 Oct 2013
    CategoryUbuntu
    27
    Posted ByLinuxSecurity Advisories
    Nova could be made to crash if it received specially crafted network requests.
    
    ==========================================================================
    Ubuntu Security Notice USN-2000-1
    October 23, 2013
    
    nova vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 13.04
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Nova could be made to crash if it received specially crafted network
    requests.
    
    Software Description:
    - nova: OpenStack Compute cloud infrastructure
    
    Details:
    
    It was discovered that Nova did not properly enforce the is_public property
    when determining flavor access. An authenticated attacker could exploit
    this to obtain sensitive information in private flavors. This issue only
    affected Ubuntu 12.10 and 13.10. (CVE-2013-2256, CVE-2013-4278)
    
    Grant Murphy discovered that Nova would allow XML entity processing. A
    remote unauthenticated attacker could exploit this using the Nova API to
    cause a denial of service via resource exhaustion. This issue only
    affected Ubuntu 13.10. (CVE-2013-4179)
    
    Vishvananda Ishaya discovered that Nova inefficiently handled network
    security group updates when Nova was configured to use nova-network. An
    authenticated attacker could exploit this to cause a denial of service.
    (CVE-2013-4185)
    
    Jaroslav Henner discovered that Nova did not properly handle certain inputs
    to the instance console when Nova was configured to use Apache Qpid. An
    authenticated attacker could exploit this to cause a denial of service on
    the compute node running the instance. By default, Ubuntu uses RabbitMQ
    instead of Qpid. (CVE-2013-4261)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 13.04:
      python-nova                     1:2013.1.3-0ubuntu1.1
    
    Ubuntu 12.10:
      python-nova                     2012.2.4-0ubuntu3.1
    
    Ubuntu 12.04 LTS:
      python-nova                     2012.1.3+stable-20130423-e52e6912-0ubuntu1.2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2000-1
      CVE-2013-2256, CVE-2013-4179, CVE-2013-4185, CVE-2013-4261,
      CVE-2013-4278
    
    Package Information:
      https://launchpad.net/ubuntu/+source/nova/1:2013.1.3-0ubuntu1.1
      https://launchpad.net/ubuntu/+source/nova/2012.2.4-0ubuntu3.1
    
    https://launchpad.net/ubuntu/+source/nova/2012.1.3+stable-20130423-e52e6912-0ubuntu1.2
    
    
    
    
    
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