USN-1163-1: Bind vulnerability

5 July 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


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

Software Description

  • bind9 - Internet Domain Name Server


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

To update your system, please follow these instructions:

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