USN-808-1: Bind vulnerability

Ubuntu Security Notice USN-808-1

28th July, 2009

bind9 vulnerability

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

  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software description

  • bind9


Micha Krause discovered that Bind did not correctly validate certain
dynamic DNS update packets. An unauthenticated remote attacker could
send specially crafted traffic to crash the DNS server, leading to a
denial of service.

Update instructions

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

Ubuntu 9.04:
bind9 1:9.5.1.dfsg.P2-1ubuntu0.1
Ubuntu 8.10:
bind9 1:9.5.0.dfsg.P2-1ubuntu3.2
Ubuntu 8.04 LTS:
bind9 1:9.4.2.dfsg.P2-2ubuntu0.2
Ubuntu 6.06 LTS:
bind9 1:9.3.2-2ubuntu1.7

To update your system, please follow these instructions:

In general, a standard system upgrade is sufficient to effect the
necessary changes.