USN-2497-1: NTP vulnerabilities

Releases

• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04
• Ubuntu 10.04

Packages

• 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

• ntp - 1:4.2.6.p5+dfsg-3ubuntu2.14.04.2

Ubuntu 12.04

• ntp - 1:4.2.6.p3+dfsg-1ubuntu3.3

Ubuntu 10.04

• ntp - 1:4.2.4p8+dfsg-1ubuntu2.3

In general, a standard system update will make all the necessary changes.

References

• CVE-2014-9297
• CVE-2014-9298