USN-865-1: Bind vulnerability

Ubuntu Security Notice USN-865-1

7th December, 2009

bind9 vulnerability

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

  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software description

  • bind9


Michael Sinatra discovered that Bind did not correctly validate certain
records added to its cache. When DNSSEC validation is in use, a remote
attacker could exploit this to spoof DNS entries and poison DNS caches.
Among other things, this could lead to misdirected email and web traffic.

Update instructions

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

Ubuntu 9.10:
libdns53 1:9.6.1.dfsg.P1-3ubuntu0.2
Ubuntu 9.04:
libdns46 1:9.5.1.dfsg.P2-1ubuntu0.3
Ubuntu 8.10:
libdns44 1:9.5.0.dfsg.P2-1ubuntu3.4
Ubuntu 8.04 LTS:
libdns36 1:9.4.2.dfsg.P2-2ubuntu0.4
Ubuntu 6.06 LTS:
libdns23 1:9.3.2-2ubuntu1.9

To update your system, please follow these instructions:

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