Ubuntu 1540-2: NSS vulnerability

    Date21 Aug 2012
    CategoryUbuntu
    60
    Posted ByLinuxSecurity Advisories
    NSS could be made to crash if it opened a specially crafted certificate.
    ==========================================================================
    Ubuntu Security Notice USN-1540-2
    August 21, 2012
    
    nss vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    
    Summary:
    
    NSS could be made to crash if it opened a specially crafted certificate.
    
    Software Description:
    - nss: Network Security Service library
    
    Details:
    
    USN-1540-1 fixed vulnerabilities in NSS. This update provides the
    corresponding updates for Ubuntu 12.04 LTS.
    
    Original advisory details:
    
     Kaspar Brand discovered a vulnerability in how the Network Security
     Services (NSS) ASN.1 decoder handles zero length items. If the user were
     tricked into opening a specially crafted certificate, an attacker could
     possibly exploit this to cause a denial of service via application crash.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      libnss3                         3.13.1.with.ckbi.1.88-1ubuntu6.1
    
    After a standard system update you need to restart any applications that
    use NSS, such as Evolution, to make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1540-2
      http://www.ubuntu.com/usn/usn-1540-1
      CVE-2012-0441
    
    Package Information:
      https://launchpad.net/ubuntu/+source/nss/3.13.1.with.ckbi.1.88-1ubuntu6.1
    
    
    
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