The Fabric Interconnect component in Cisco Unified Computing System (UCS) 2.0 allows remote attackers to cause a denial of service (process crash) via an attempted SSH session, aka Bug ID CSCtt94543.
http://www.securitytracker.com/id?1027350
http://www.cisco.com/en/US/docs/unified_computing/ucs/release/notes/OL_25363.html