Ubuntu Security Notice USN-2497-1
9th February, 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 version:
- 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
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.