Multiple stack-based buffer overflows in cgi/close_window.cgi in the web interface in the Intelligent Platform Management Interface (IPMI) with firmware before 3.15 (SMT_X9_315) on Supermicro X9 generation motherboards allow remote attackers to execute arbitrary code via the (1) sess_sid or (2) ACT parameter.
https://support.citrix.com/article/CTX216642
http://www.thomas-krenn.com/en/wiki/Supermicro_IPMI_Security_Updates_November_2013
http://www.supermicro.com/products/nfo/files/IPMI/CVE_Update.pdf