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    Ubuntu 4512-1: util-linux vulnerability

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    util-linux could be made to run programs when performing bash completion.
    ==========================================================================
    Ubuntu Security Notice USN-4512-1
    September 17, 2020
    
    util-linux vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    
    Summary:
    
    util-linux could be made to run programs when performing bash completion.
    
    Software Description:
    - util-linux: miscellaneous system utilities
    
    Details:
    
    It was discovered that the umount bash completion script shipped in
    util-linux incorrectly handled certain mountpoints. If a local attacker
    were able to create arbitrary mountpoints, another user could be tricked
    into executing arbitrary code when attempting to run the umount command
    with bash completion.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      util-linux                      2.31.1-0.4ubuntu3.7
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4512-1
      CVE-2018-7738
    
    Package Information:
      https://launchpad.net/ubuntu/+source/util-linux/2.31.1-0.4ubuntu3.7
    
    

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