The MITRE CVE dictionary describes this issue as:
sudo before 1.6.8p2 allows local users to execute arbitrary commands by using "()" style environment variables to create functions that have the same name as any program within the bash script that is called without using the program's full pathname.
Find out more about CVE-2004-1051 from the
MITRE CVE dictionary dictionary and
We do not consider this to be a security issue: