img.pl in Barracuda Spam Firewall running firmware 3.1.16 and 3.1.17 allows remote attackers to execute arbitrary commands via shell metacharacters in the f parameter.

Argument injection vulnerability in Barracuda Spam Firewall running firmware 3.1.16 and 3.1.17 allows remote attackers to (1) read portions of source code via the -f option to Dig (dig_device.cgi), (2) determine file existence via the -r argument to Tcpdump (tcpdump_device.cgi) or (3) modify files in the cgi-bin directory via the -w argument to Tcpdump.

Barracuda Spam Firewall 3.1.10 and earlier does not restrict the domains that white-listed domains can send mail to, which allows members of white-listed domains to use Barracuda as an open mail relay for spam.