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.
The problem can be corrected by updating your system to the following package versions:
29 July 2009
A security issue affects these releases of Ubuntu and its derivatives:
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.
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon