=========================================================================Ubuntu Security Notice USN-1910-1
July 29, 2013

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

- 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:

Maxim Shudrak discovered that Bind incorrectly handled certain malformed
rdata. 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 13.04:
  bind9                           1:9.9.2.dfsg.P1-2ubuntu2.1
  libdns95                        1:9.9.2.dfsg.P1-2ubuntu2.1

Ubuntu 12.10:
  bind9                           1:9.8.1.dfsg.P1-4.2ubuntu3.3
  libdns81                        1:9.8.1.dfsg.P1-4.2ubuntu3.3

Ubuntu 12.04 LTS:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.7
  libdns81                        1:9.8.1.dfsg.P1-4ubuntu0.7

Ubuntu 10.04 LTS:
  bind9                           1:9.7.0.dfsg.P1-1ubuntu0.10
  libdns64                        1:9.7.0.dfsg.P1-1ubuntu0.10

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

References:
  https://ubuntu.com/security/notices/USN-1910-1
  CVE-2013-4854

Package Information:
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.2.dfsg.P1-2ubuntu2.1
  https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4.2ubuntu3.3
  https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.7
  https://launchpad.net/ubuntu/+source/bind9/1:9.7.0.dfsg.P1-1ubuntu0.10