Carnegie Mellon University's CERT has release a Basic Fuzzing Framework (BFF) that performs automated dumb fuzzing.

It consists of two parts-- a) A stripped down Debian virtual machine installation optimized for fuzzing b) A set of scripts and a configuration file that orchestrate the fuzzing run.

Basic Fuzzing Framework uses 'zzff' as its fuzzer. zzff is invoked from a script zzuf.pl and reads the configuration options from zzuf.cfg The scripts help automate additional aspects of a fuzzing run.

To read more and download BFF visit the following link
http://www.cert.org/blogs/vuls/2010/05/cert_basic_fuzzing_framework.html