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Ubuntu Security Notice USN-1163-1
July 05, 2011

bind9 vulnerability

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

• Ubuntu 11.04
• Ubuntu 10.10
• Ubuntu 10.04 LTS
• Ubuntu 8.04 LTS

Summary:

An attacker could send crafted input to Bind and cause it to crash.

Software Description:

• bind9: Internet Domain Name Server

Details:

It was discovered that Bind incorrectly handled certain specially crafted
packets. A remote attacker could use this flaw 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 11.04:
libdns69 1:9.7.3.dfsg-1ubuntu2.2

Ubuntu 10.10:
libdns66 1:9.7.1.dfsg.P2-2ubuntu0.4

Ubuntu 10.04 LTS:
libdns64 1:9.7.0.dfsg.P1-1ubuntu0.3

Ubuntu 8.04 LTS:
libdns36 1:9.4.2.dfsg.P2-2ubuntu0.8

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

References:
http://www.ubuntu.com/usn/usn-1163-1
CVE-2011-2464

Package Information:
https://launchpad.net/ubuntu/+source/bind9/1:9.7.3.dfsg-1ubuntu2.2
https://launchpad.net/ubuntu/+source/bind9/1:9.7.1.dfsg.P2-2ubuntu0.4
https://launchpad.net/ubuntu/+source/bind9/1:9.7.0.dfsg.P1-1ubuntu0.3
https://launchpad.net/ubuntu/+source/bind9/1:9.4.2.dfsg.P2-2ubuntu0.8