Ubuntu 3156-2: APT regression

    Date 16 Dec 2016
    88
    Posted By LinuxSecurity Advisories
    USN-3156-1 introduced a regression in unattended-upgrades that may requiremanual intervention to repair.
    ==========================================================================
    Ubuntu Security Notice USN-3156-2
    December 17, 2016
    
    apt regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.10
    
    Summary:
    
    USN-3156-1 introduced a regression in unattended-upgrades that may require
    manual intervention to repair.
    
    Software Description:
    - apt: Advanced front-end for dpkg
    
    Details:
    
    USN-3156-1 fixed vulnerabilities in APT. It also caused a bug in
    unattended-upgrades on that may require manual intervention to repair.
    
    Users on Ubuntu 16.10 should run the following commands at a
    terminal:
    
    sudo dpkg --configure --pending
    sudo apt-get -f install
    
    This update fixes the problem.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     Jann Horn discovered that APT incorrectly handled InRelease files.
     If a remote attacker were able to perform a man-in-the-middle attack,
     this flaw could potentially be used to install altered packages.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.10:
      apt                             1.3.3
    
    After a standard system update you should run the following commands
    to make all the necessary changes:
    sudo dpkg --configure --pending
    sudo apt-get -f install
    
    References:
      https://www.ubuntu.com/usn/usn-3156-2
      https://www.ubuntu.com/usn/usn-3156-1
      https://launchpad.net/bugs/1649959
    
    Package Information:
      https://launchpad.net/ubuntu/+source/apt/1.3.3
    

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