Ubuntu 3353-3: Heimdal vulnerability

    Date24 Jul 2017
    CategoryUbuntu
    44
    Posted ByLinuxSecurity Advisories
    Heimdal could allow unintended access to network services.
    ==========================================================================
    Ubuntu Security Notice USN-3353-3
    July 24, 2017
    
    heimdal vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Heimdal could allow unintended access to network services.
    
    Software Description:
    - heimdal: Heimdal Kerberos Network Authentication Protocol
    
    Details:
    
    USN-3353-1 fixed a vulnerability in Heimdal. This update provides
    the corresponding updade for Ubuntu 12.04 ESM.
    
    Original advisory details:
    
     Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
     that Heimdal clients incorrectly trusted unauthenticated portions
     of Kerberos tickets. A remote attacker could use this to impersonate
     trusted network services or perform other attacks.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 ESM:
      libkrb5-26-heimdal              1.6~git20120311.dfsg.1-2ubuntu0.2
    
    After a standard system update you need to restart any applications
    using Heimdal libraries to make all the necessary changes.
    
    References:
      https://www.ubuntu.com/usn/usn-3353-3
      https://www.ubuntu.com/usn/usn-3353-1
      CVE-2017-11103
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the articles on LinuxSecurity?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/24-what-do-you-think-of-the-quality-of-the-articles-on-linuxsecurity?task=poll.vote&format=json
    24
    radio
    [{"id":"87","title":"Excellent, don't change a thing!","votes":"25","type":"x","order":"1","pct":55.56,"resources":[]},{"id":"88","title":"Should be more technical","votes":"5","type":"x","order":"2","pct":11.11,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"15","type":"x","order":"3","pct":33.33,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.