===========================================================================
Ubuntu Security Notice USN-3346-1
June 29, 2017

bind9 vulnerabilities
===========================================================================

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

- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Bind could be made to serve incorrect information or expose sensitive
information over the network.

Software Description:
- bind9: Internet Domain Name Server

Details:

Cl=E9ment Berthaux discovered that Bind did not correctly check TSIG
authentication for zone update requests. An attacker could use this
to improperly perform zone updates. (CVE-2017-3143)

Cl=E9ment Berthaux discovered that Bind did not correctly check TSIG
authentication for zone transfer requests. An attacker could use this
to improperly transfer entire zones. (CVE-2017-3142)

Update instructions:

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

Ubuntu 17.04:
  bind9                           1:9.10.3.dfsg.P4-10.1ubuntu5.1

Ubuntu 16.10:
  bind9                           1:9.10.3.dfsg.P4-10.1ubuntu1.7

Ubuntu 16.04 LTS:
  bind9                           1:9.10.3.dfsg.P4-8ubuntu1.7

Ubuntu 14.04 LTS:
  bind9                           1:9.9.5.dfsg-3ubuntu0.15

After a standard system update you need to restart Bind to make
all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3346-1
  CVE-2017-3142, CVE-2017-3143

Package Information:
  https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-10.1ubuntu5.1
  https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-10.1ubuntu1.7
  https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-8ubuntu1.7
  https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-3ubuntu0.15