Ubuntu 3675-2: GnuPG 2 vulnerability

    Date14 Jun 2018
    7135
    Posted ByAnthony Pell
    GnuPG 2 could be made to present validity information incorrectly.
    ==========================================================================
    Ubuntu Security Notice USN-3675-2
    June 15, 2018
    
    gnupg2 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    GnuPG 2 could be made to present validity information incorrectly.
    
    Software Description:
    - gnupg2: GNU privacy guard - a free PGP replacement
    
    Details:
    
    USN-3675-1 fixed a vulnerability in GnuPG 2 for Ubuntu 18.04 LTS and
    Ubuntu 17.10. This update provides the corresponding update for GnuPG 2
    in Ubuntu 16.04 LTS and Ubuntu 14.04 LTS.
    
    Original advisory details:
    
     Marcus Brinkmann discovered that during decryption or verification,
     GnuPG did not properly filter out terminal sequences when reporting the
     original filename. An attacker could use this to specially craft a file
     that would cause an application parsing GnuPG output to incorrectly
     interpret the status of the cryptographic operation reported by GnuPG.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      gnupg2                          2.1.11-6ubuntu2.1
    
    Ubuntu 14.04 LTS:
      gnupg2                          2.0.22-3ubuntu1.4
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3675-2
      https://usn.ubuntu.com/usn/usn-3675-1
      CVE-2018-12020
    
    Package Information:
      https://launchpad.net/ubuntu/+source/gnupg2/2.1.11-6ubuntu2.1
      https://launchpad.net/ubuntu/+source/gnupg2/2.0.22-3ubuntu1.4
    

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