Ubuntu 3876-1: Avahi vulnerabilities

    Date31 Jan 2019
    CategoryUbuntu
    4303
    Posted ByAnthony Pell
    Several security issues were fixed in Avahi.
    ==========================================================================
    Ubuntu Security Notice USN-3876-1
    January 31, 2019
    
    avahi vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in Avahi.
    
    Software Description:
    - avahi: Avahi IPv4LL network address configuration daemon
    
    Details:
    
    Chad Seaman discovered that Avahi incorrectly handled certain messages.
    An attacker could possibly use this issue to cause a denial of service.
    (CVE-2017-6519, CVE-2018-1000845)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.10:
      avahi-daemon                    0.7-4ubuntu2.1
      libavahi-core7                  0.7-4ubuntu2.1
    
    Ubuntu 18.04 LTS:
      avahi-daemon                    0.7-3.1ubuntu1.2
      libavahi-core7                  0.7-3.1ubuntu1.2
    
    Ubuntu 16.04 LTS:
      avahi-daemon                    0.6.32~rc+dfsg-1ubuntu2.3
      libavahi-core7                  0.6.32~rc+dfsg-1ubuntu2.3
    
    Ubuntu 14.04 LTS:
      avahi-daemon                    0.6.31-4ubuntu1.3
      libavahi-core7                  0.6.31-4ubuntu1.3
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3876-1
      CVE-2017-6519, CVE-2018-1000845
    
    Package Information:
      https://launchpad.net/ubuntu/+source/avahi/0.7-4ubuntu2.1
      https://launchpad.net/ubuntu/+source/avahi/0.7-3.1ubuntu1.2
      https://launchpad.net/ubuntu/+source/avahi/0.6.32~rc+dfsg-1ubuntu2.3
      https://launchpad.net/ubuntu/+source/avahi/0.6.31-4ubuntu1.3
    
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