Ubuntu Security Notice USN-418-1
5th February, 2007
bind9 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 6.10
- Ubuntu 6.06 LTS
- Ubuntu 5.10
Details
A flaw was discovered in Bind's DNSSEC validation code. Remote
attackers could send a specially crafted DNS query which would cause the
Bind server to crash, resulting in a denial of service. Only servers
configured to use DNSSEC extensions were vulnerable.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 6.10:
- libdns21 1:9.3.2-2ubuntu3.1
- Ubuntu 6.06 LTS:
- libdns21 1:9.3.2-2ubuntu1.2
- Ubuntu 5.10:
- libdns20 1:9.3.1-2ubuntu1.2
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.