USN-1518-1: Bind vulnerability

26 July 2012

bind9 vulnerability

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


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

Software Description

  • bind9 - Internet Domain Name Server


Einar Lonn discovered that Bind incorrectly initialized the failing-query cache. A remote attacker could use this flaw to cause Bind to crash, resulting in a denial of service.

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.P1-4ubuntu0.2
Ubuntu 11.10
libdns69 - 1:9.7.3.dfsg-1ubuntu4.3
Ubuntu 11.04
libdns69 - 1:9.7.3.dfsg-1ubuntu2.5
Ubuntu 10.04 LTS
libdns64 - 1:9.7.0.dfsg.P1-1ubuntu0.6

To update your system, please follow these instructions:

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