Ubuntu 2497-1: NTP vulnerabilities

    Date09 Feb 2015
    CategoryUbuntu
    45
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in NTP.
    ==========================================================================
    Ubuntu Security Notice USN-2497-1
    February 09, 2015
    
    ntp vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Several security issues were fixed in NTP.
    
    Software Description:
    - ntp: Network Time Protocol daemon and utility programs
    
    Details:
    
    Stephen Roettger, Sebastian Krahmer, and Harlan Stenn discovered that NTP
    incorrectly handled the length value in extension fields. A remote attacker
    could use this issue to possibly obtain leaked information, or cause the
    NTP daemon to crash, resulting in a denial of service. (CVE-2014-9297)
    
    Stephen Roettger discovered that NTP incorrectly handled ACLs based on
    certain IPv6 addresses. (CVE-2014-9298)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.10:
      ntp                             1:4.2.6.p5+dfsg-3ubuntu2.14.10.2
    
    Ubuntu 14.04 LTS:
      ntp                             1:4.2.6.p5+dfsg-3ubuntu2.14.04.2
    
    Ubuntu 12.04 LTS:
      ntp                             1:4.2.6.p3+dfsg-1ubuntu3.3
    
    Ubuntu 10.04 LTS:
      ntp                             1:4.2.4p8+dfsg-1ubuntu2.3
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2497-1
      CVE-2014-9297, CVE-2014-9298
    
    Package Information:
      https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu2.14.10.2
      https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu2.14.04.2
      https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p3+dfsg-1ubuntu3.3
      https://launchpad.net/ubuntu/+source/ntp/1:4.2.4p8+dfsg-1ubuntu2.3
    
    
    
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