=========================================================================Ubuntu Security Notice USN-2081-1
January 13, 2014

bind9 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Bind could be made to crash if it received specially crafted network
traffic.

Software Description:
- bind9: Internet Domain Name Server

Details:

Jared Mauch discovered that Bind incorrectly handled certain queries for
NSEC3-signed zones. A remote attacker could use this flaw with a specially
crafted query to cause Bind to stop responding, resulting in a denial of
service.

Update instructions:

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

Ubuntu 13.10:
  bind9                           1:9.9.3.dfsg.P2-4ubuntu1.1

Ubuntu 13.04:
  bind9                           1:9.9.2.dfsg.P1-2ubuntu2.2

Ubuntu 12.10:
  bind9                           1:9.8.1.dfsg.P1-4.2ubuntu3.4

Ubuntu 12.04 LTS:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.8

Ubuntu 10.04 LTS:
  bind9                           1:9.7.0.dfsg.P1-1ubuntu0.11

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

References:
  
  CVE-2014-0591

Package Information:
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.3.dfsg.P2-4ubuntu1.1
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.2.dfsg.P1-2ubuntu2.2
  https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4.2ubuntu3.4
  https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.8
  https://launchpad.net/ubuntu/+source/bind9/1:9.7.0.dfsg.P1-1ubuntu0.11