Ubuntu 3853-1: GnuPG vulnerability

    Date10 Jan 2019
    CategoryUbuntu
    243
    Posted ByLinuxSecurity Advisories
    GnuPG could allow unintended access to network services.
    ==========================================================================
    Ubuntu Security Notice USN-3853-1
    January 10, 2019
    
    gnupg2 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    
    Summary:
    
    GnuPG could allow unintended access to network services.
    
    Software Description:
    - gnupg2: GNU privacy guard - a free PGP replacement
    
    Details:
    
    Ben Fuhrmannek discovered that GnuPG incorrectly handled Web Key Directory
    lookups. A remote attacker could possibly use this issue to cause a denial
    of service, or perform Cross-Site Request Forgery attacks.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.10:
      gnupg                           2.2.8-3ubuntu1.1
      gpg-wks-client                  2.2.8-3ubuntu1.1
    
    Ubuntu 18.04 LTS:
      gnupg                           2.2.4-1ubuntu1.2
      gpg-wks-client                  2.2.4-1ubuntu1.2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3853-1
      CVE-2018-1000858
    
    Package Information:
      https://launchpad.net/ubuntu/+source/gnupg2/2.2.8-3ubuntu1.1
      https://launchpad.net/ubuntu/+source/gnupg2/2.2.4-1ubuntu1.2
    
    
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