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    Ubuntu 4197-1: Bind vulnerability

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    Bind could be made to consume resources if it received specially crafted network traffic.
    ==========================================================================
    Ubuntu Security Notice USN-4197-1
    November 21, 2019
    
    bind9 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Bind could be made to consume resources if it received specially crafted
    network traffic.
    
    Software Description:
    - bind9: Internet Domain Name Server
    
    Details:
    
    It was discovered that Bind incorrectly handled certain TCP-pipelined
    queries. A remote attacker could possibly use this issue to cause Bind to
    consume resources, resulting in a denial of service.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      bind9                           1:9.11.5.P4+dfsg-5.1ubuntu2.1
    
    Ubuntu 19.04:
      bind9                           1:9.11.5.P1+dfsg-1ubuntu2.6
    
    Ubuntu 18.04 LTS:
      bind9                           1:9.11.3+dfsg-1ubuntu1.11
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4197-1
      CVE-2019-6477
    
    Package Information:
      https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P4+dfsg-5.1ubuntu2.1
      https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P1+dfsg-1ubuntu2.6
      https://launchpad.net/ubuntu/+source/bind9/1:9.11.3+dfsg-1ubuntu1.11
    
    

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