Ubuntu 3064-1: GnuPG vulnerability

    Date18 Aug 2016
    CategoryUbuntu
    62
    Posted ByLinuxSecurity Advisories
    GnuPG incorrectly generated random numbers.
    ==========================================================================
    Ubuntu Security Notice USN-3064-1
    August 18, 2016
    
    gnupg vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    GnuPG incorrectly generated random numbers.
    
    Software Description:
    - gnupg: GNU privacy guard - a free PGP replacement
    
    Details:
    
    Felix Dörre and Vladimir Klebanov discovered that GnuPG incorrectly handled
    mixing functions in the random number generator. An attacker able to obtain
    4640 bits from the RNG can trivially predict the next 160 bits of output.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      gnupg                           1.4.20-1ubuntu3.1
    
    Ubuntu 14.04 LTS:
      gnupg                           1.4.16-1ubuntu2.4
    
    Ubuntu 12.04 LTS:
      gnupg                           1.4.11-3ubuntu2.10
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-3064-1
      CVE-2016-6313
    
    Package Information:
      https://launchpad.net/ubuntu/+source/gnupg/1.4.20-1ubuntu3.1
      https://launchpad.net/ubuntu/+source/gnupg/1.4.16-1ubuntu2.4
      https://launchpad.net/ubuntu/+source/gnupg/1.4.11-3ubuntu2.10
    
    
    
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