Ubuntu 4149-1: Unbound vulnerability

    Date08 Oct 2019
    CategoryUbuntu
    248
    Posted ByLinuxSecurity Advisories
    Unbound could be made to crash if it received a specially crafted NOTIFY query.
    ==========================================================================
    Ubuntu Security Notice USN-4149-1
    October 08, 2019
    
    unbound vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    
    Summary:
    
    Unbound could be made to crash if it received a specially crafted
    NOTIFY query.
    
    Software Description:
    - unbound: validating, recursive, caching DNS resolver
    
    Details:
    
    It was discovered that Unbound incorrectly handled certain NOTIFY queries.
    An attacker could possibly use this issue to cause a denial of service.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      libunbound8                     1.9.0-2ubuntu0.1
      unbound                         1.9.0-2ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4149-1
      CVE-2019-16866
    
    Package Information:
      https://launchpad.net/ubuntu/+source/unbound/1.9.0-2ubuntu0.1
    
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