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==========================================================================
Ubuntu Security Notice USN-1462-1
June 05, 2012

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

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

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

Software Description:
- bind9: Internet Domain Name Server

Details:

Dan Luther discovered that Bind incorrectly handled zero length rdata
fields. A remote attacker could use this flaw to cause Bind to crash or
behave erratically, resulting in a denial of service. (CVE-2012-1667)

It was discovered that Bind incorrectly handled revoked domain names. A
remote attacker could use this flaw to cause malicious domain names to be
continuously resolvable even after they have been revoked. (CVE-2012-1033)

Update instructions:

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

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

Ubuntu 11.10:
  libdns69                        1:9.7.3.dfsg-1ubuntu4.2

Ubuntu 11.04:
  libdns69                        1:9.7.3.dfsg-1ubuntu2.4

Ubuntu 10.04 LTS:
  libdns64                        1:9.7.0.dfsg.P1-1ubuntu0.5

Ubuntu 8.04 LTS:
  libdns36                        1:9.4.2.dfsg.P2-2ubuntu0.10

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

References:
  http://www.ubuntu.com/usn/usn-1462-1
  CVE-2012-1033, CVE-2012-1667

Package Information:
  https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.1
  https://launchpad.net/ubuntu/+source/bind9/1:9.7.3.dfsg-1ubuntu4.2
  https://launchpad.net/ubuntu/+source/bind9/1:9.7.3.dfsg-1ubuntu2.4
  https://launchpad.net/ubuntu/+source/bind9/1:9.7.0.dfsg.P1-1ubuntu0.5
  https://launchpad.net/ubuntu/+source/bind9/1:9.4.2.dfsg.P2-2ubuntu0.10


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