Ubuntu 3876-2: Avahi vulnerabilities

    Date 31 Jan 2019
    5117
    Posted By Anthony Pell
    Several security issues were fixed in Avahi.
    ==========================================================================
    Ubuntu Security Notice USN-3876-2
    January 31, 2019
    
    avahi vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in Avahi.
    
    Software Description:
    - avahi: Avahi IPv4LL network address configuration daemon
    
    Details:
    
    USN-3876-1 fixed a vulnerability in Avahi. This update provides
    the corresponding update for Ubuntu 12.04 ESM.
    
    Original advisory 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 12.04 ESM:
      avahi-daemon                    0.6.30-5ubuntu2.3
      libavahi-core7                  0.6.30-5ubuntu2.3
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3876-2
      https://usn.ubuntu.com/usn/usn-3876-1
      CVE-2017-6519, CVE-2018-1000845
    

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