=========================================================================Ubuntu Security Notice USN-2693-1
July 28, 2015

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

- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

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

Software Description:
- bind9: Internet Domain Name Server

Details:

Jonathan Foote discovered that Bind incorrectly handled certain TKEY
queries. A remote attacker could use this issue with a specially crafted
packet to cause Bind to crash, resulting in a denial of service.
(CVE-2015-5477)

Pories Ediansyah discovered that Bind incorrectly handled certain
configurations involving DNS64. A remote attacker could use this issue with
a specially crafted query to cause Bind to crash, resulting in a denial of
service. This issue only affected Ubuntu 12.04 LTS. (CVE-2012-5689)

Update instructions:

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

Ubuntu 15.04:
  bind9                           1:9.9.5.dfsg-9ubuntu0.2

Ubuntu 14.04 LTS:
  bind9                           1:9.9.5.dfsg-3ubuntu0.4

Ubuntu 12.04 LTS:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.12

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

References:
  https://ubuntu.com/security/notices/USN-2693-1
  CVE-2012-5689, CVE-2015-5477

Package Information:
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-9ubuntu0.2
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-3ubuntu0.4
  https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.12