On the recent security issue with Supermicro IPMI Exploit, the security issue had been fixed by Supermicro using IPMI firmware released since last year December 2013. This specific security issue involved Nuvoton manufactured BMC chip model WPCM450 BMC which affected all servers worldwide which using similar chip for their IPMI management.
Please refer to link below for the list of security fixes from Supermicro. For this issue the specific fixed is on item no. 2, firmware version SMT X9_317 and SMT X8_312 or higher (both IPMI firmware fixed were released since 19 Dec 2013).
http://www.supermicro.com.tw/products/nfo/files/IPMI/CVE_Update.pdf
