Ubuntu 3009-1: Dnsmasq vulnerability

    Date20 Jun 2016
    CategoryUbuntu
    64
    Posted ByLinuxSecurity Advisories
    Dnsmasq could be made to crash if it received specially crafted network traffic.
    ==========================================================================
    Ubuntu Security Notice USN-3009-1
    June 20, 2016
    
    dnsmasq vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    - Ubuntu 15.10
    
    Summary:
    
    Dnsmasq could be made to crash if it received specially crafted network
    traffic.
    
    Software Description:
    - dnsmasq: Small caching DNS proxy and DHCP/TFTP server
    
    Details:
    
    Edwin Török discovered that Dnsmasq incorrectly handled certain CNAME
    responses. A remote attacker could use this issue to cause Dnsmasq to
    crash, resulting in a denial of service.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      dnsmasq                         2.75-1ubuntu0.16.04.1
      dnsmasq-base                    2.75-1ubuntu0.16.04.1
      dnsmasq-utils                   2.75-1ubuntu0.16.04.1
    
    Ubuntu 15.10:
      dnsmasq                         2.75-1ubuntu0.15.10.1
      dnsmasq-base                    2.75-1ubuntu0.15.10.1
      dnsmasq-utils                   2.75-1ubuntu0.15.10.1
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-3009-1
      CVE-2015-8899
    
    Package Information:
      https://launchpad.net/ubuntu/+source/dnsmasq/2.75-1ubuntu0.16.04.1
      https://launchpad.net/ubuntu/+source/dnsmasq/2.75-1ubuntu0.15.10.1
    
    
    
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