Ubuntu 3707-2: NTP vulnerabilities

    Date23 Jan 2019
    CategoryUbuntu
    3017
    Posted ByAnthony Pell
    Several security issues were fixed in NTP.
    ==========================================================================
    Ubuntu Security Notice USN-3707-2
    January 23, 2019
    
    ntp vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in NTP.
    
    Software Description:
    - ntp: Network Time Protocol daemon and utility programs
    
    Details:
    
    USN-3707-1 and USN-3349-1 fixed several vulnerabilities in NTP. This
    update provides the corresponding update for Ubuntu 12.04 ESM.
    
    Original advisory details:
    
     Miroslav Lichvar discovered that NTP incorrectly handled certain
     spoofed addresses when performing rate limiting. A remote attacker
     could possibly use this issue to perform a denial of service.
     (CVE-2016-7426)
    
     Matthew Van Gundy discovered that NTP incorrectly handled certain
     crafted broadcast mode packets. A remote attacker could possibly use
     this issue to perform a denial of service. 
     (CVE-2016-7427, CVE-2016-7428)
    
     Matthew Van Gundy discovered that NTP incorrectly handled certain
     control mode packets. A remote attacker could use this issue to set or
     unset traps. (CVE-2016-9310)
    
     Matthew Van Gundy discovered that NTP incorrectly handled the trap
     service. A remote attacker could possibly use this issue to cause NTP
     to crash, resulting in a denial of service. (CVE-2016-9311)
    
     It was discovered that the NTP legacy DPTS refclock driver incorrectly
     handled the /dev/datum device. A local attacker could possibly use
     this issue to cause a denial of service. (CVE-2017-6462)
    
     It was discovered that NTP incorrectly handled certain invalid
     settings in a :config directive. A remote authenticated user could
     possibly use this issue to cause NTP to crash, resulting in a denial
     of service. (CVE-2017-6463)
    
     Michael Macnair discovered that NTP incorrectly handled certain
     responses. A remote attacker could possibly use this issue to execute
     arbitrary code. (CVE-2018-7183)
    
     Miroslav Lichvar discovered that NTP incorrectly handled certain
     zero-origin timestamps. A remote attacker could possibly use this
     issue to cause a denial of service. (CVE-2018-7185)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 ESM:
      ntp                             1:4.2.6.p3+dfsg-1ubuntu3.12
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3707-2
      https://usn.ubuntu.com/usn/usn-3707-1
      CVE-2016-7426, CVE-2016-7427, CVE-2016-7428, CVE-2016-9310,
      CVE-2016-9311, CVE-2017-6462, CVE-2017-6463, CVE-2018-7183,
      CVE-2018-7185
    
    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":"64","type":"x","order":"1","pct":57.14,"resources":[]},{"id":"88","title":"Should be more technical","votes":"15","type":"x","order":"2","pct":13.39,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"33","type":"x","order":"3","pct":29.46,"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.