==========================================================================
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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