Ubuntu 3893-2: Bind vulnerabilities

    Date25 Feb 2019
    CategoryUbuntu
    1472
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Bind.
    ==========================================================================
    Ubuntu Security Notice USN-3893-2
    February 25, 2019
    
    bind9 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in Bind.
    
    Software Description:
    - bind9: Internet Domain Name Server
    
    Details:
    
    USN-3893-1 fixed a vulnerability in Bind. This update provides
    the corresponding update for Ubuntu 12.04 ESM.
    
    
    Original advisory details:
    
     It was discovered that Bind incorrectly handled certain trust anchors
     when used with the "managed-keys" feature. A remote attacker could
     possibly use this issue to cause Bind to crash, resulting in a denial
     of service. (CVE-2018-5745)
    
     It was discovered that Bind incorrectly handled certain controls for
     zone transfers, contrary to expectations. (CVE-2019-6465)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 ESM:
      bind9                           1:9.8.1.dfsg.P1-4ubuntu0.27
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3893-2
      https://usn.ubuntu.com/usn/usn-3893-1
      CVE-2018-5745, CVE-2019-6465
    
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