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
Details
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: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.