1. Ubuntu Security Notices
  2. USN-2497-1

USN-2497-1: NTP vulnerabilities

Publication date

9 February 2015

Overview

Several security issues were fixed in NTP.

Releases

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)

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

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

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
14.10 utopic ntp –  1:4.2.6.p5+dfsg-3ubuntu2.14.10.2
14.04 trusty ntp –  1:4.2.6.p5+dfsg-3ubuntu2.14.04.2
12.04 precise ntp –  1:4.2.6.p3+dfsg-1ubuntu3.3
10.04 lucid ntp –  1:4.2.4p8+dfsg-1ubuntu2.3

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References

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