CVE-2013-4782
The Supermicro BMC implementation allows remote attackers to bypass authentication and execute arbitrary IPMI commands by using cipher suite 0 (aka cipher zero) and an arbitrary password.
Date published : 2013-07-08
http://fish2.com/ipmi/cipherzero.html
http://www.metasploit.com/modules/auxiliary/scanner/ipmi/ipmi_cipher_zero
