Linux Security
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    Linux Security

    Ubuntu 4589-2: Docker vulnerability

    Date
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    Posted By
    Docker could be made to expose sensitive information over the network.
    ==========================================================================
    Ubuntu Security Notice USN-4589-2
    October 15, 2020
    
    docker.io vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 20.04 LTS
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Docker could be made to expose sensitive information over the
    network.
    
    Software Description:
    - docker.io: Linux container runtime
    
    Details:
    
    USN-4589-1 fixed a vulnerability in containerd. This update provides
    the corresponding update for docker.io.
    
    Original advisory details:
    
    It was discovered that containerd could be made to expose sensitive
    information when processing URLs in container image manifests. A
    remote attacker could use this to trick the user and obtain the
    user's registry credentials.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 20.04 LTS:
      docker.io                       19.03.8-0ubuntu1.20.04.1
    
    Ubuntu 18.04 LTS:
      docker.io                       19.03.6-0ubuntu1~18.04.2
    
    Ubuntu 16.04 LTS:
      docker.io                       18.09.7-0ubuntu1~16.04.6
    
    After a standard system update you need to restart docker to make
    all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4589-2
      https://usn.ubuntu.com/4589-1
      CVE-2020-15157
    
    Package Information:
      https://launchpad.net/ubuntu/+source/docker.io/19.03.8-0ubuntu1.20.04.1
      https://launchpad.net/ubuntu/+source/docker.io/19.03.6-0ubuntu1~18.04.2
      https://launchpad.net/ubuntu/+source/docker.io/18.09.7-0ubuntu1~16.04.6
    

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