Found Vulnerablity but Don't Know How to Exploit?

Soo, i found an website that had the vulnerablity OSVDB-578, but i don't realy know how to exploit it?

i know you need to use auxiliary/scanner/http/cisco-ios-auth-bypass in metasploit, but i can't find the actions? or, well, they don't show up when i do show actions so i need help?