Ubuntu 4219-1: libssh vulnerability

    Date10 Dec 2019
    CategoryUbuntu
    113
    Posted ByLinuxSecurity Advisories
    libssh could be made to run programs under certain conditions.
    ==========================================================================
    Ubuntu Security Notice USN-4219-1
    December 10, 2019
    
    libssh vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    libssh could be made to run programs under certain conditions.
    
    Software Description:
    - libssh: A tiny C SSH library
    
    Details:
    
    It was discovered that libssh incorrectly handled certain scp commands. If
    a user or automated system were tricked into using a specially-crafted scp
    command, a remote attacker could execute arbitrary commands on the server.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      libssh-4                        0.9.0-1ubuntu1.3
    
    Ubuntu 19.04:
      libssh-4                        0.8.6-3ubuntu0.3
    
    Ubuntu 18.04 LTS:
      libssh-4                        0.8.0~20170825.94fa1e38-1ubuntu0.5
    
    Ubuntu 16.04 LTS:
      libssh-4                        0.6.3-4.3ubuntu0.5
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4219-1
      CVE-2019-14889
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libssh/0.9.0-1ubuntu1.3
      https://launchpad.net/ubuntu/+source/libssh/0.8.6-3ubuntu0.3
      https://launchpad.net/ubuntu/+source/libssh/0.8.0~20170825.94fa1e38-1ubuntu0.5
      https://launchpad.net/ubuntu/+source/libssh/0.6.3-4.3ubuntu0.5
    
    
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