Describe CVE-2006-4081.
What is CVE-2006-4081?
preview_email.cgi in Barracuda Spam Firewall (BSF) 3.3.01.001 through 3.3.03.053 allows remote attackers to execute commands via shell metacharacters ("|" pipe symbol) in the file parameter.  NOTE: the attack can be extended to arbitrary commands by the presence of CVE-2006-4000..