An attacker could send crafted input to Avahi and cause it to hang.
It was discovered that Avahi incorrectly handled empty UDP packets. A remote attacker could send a specially-crafted packet and cause Avahi to hang, resulting in a denial of service.
7 March 2011
A security issue affects these releases of Ubuntu and its derivatives:
An attacker could send crafted input to Avahi and cause it to hang.
It was discovered that Avahi incorrectly handled empty UDP packets. A remote attacker could send a specially-crafted packet and cause Avahi to hang, resulting in 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.
After a standard system update you need to reboot your computer to make all the necessary changes.
Vulmon