=========================================================================Ubuntu Security Notice USN-2925-1
March 09, 2016

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

- Ubuntu 15.10
- 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:

It was discovered that Bind incorrectly handled input received by the rndc
control channel. A remote attacker could possibly use this issue to cause
Bind to crash, resulting in a denial of service. (CVE-2016-1285)

It was discovered that Bind incorrectly parsed resource record signatures
for DNAME resource records. A remote attacker could possibly use this issue
to cause Bind to crash, resulting in a denial of service. (CVE-2016-1286)

Update instructions:

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

Ubuntu 15.10:
  bind9                           1:9.9.5.dfsg-11ubuntu1.3

Ubuntu 14.04 LTS:
  bind9                           1:9.9.5.dfsg-3ubuntu0.8

Ubuntu 12.04 LTS:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.16

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

References:
  https://ubuntu.com/security/notices/USN-2925-1
  CVE-2016-1285, CVE-2016-1286

Package Information:
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-11ubuntu1.3
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-3ubuntu0.8
  https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.16