The management API in the XML API management service in the Manager component in Cisco Unified Computing System (UCS) 1.x before 1.2(1b) allows remote attackers to cause a denial of service (service outage) via a malformed request, aka Bug ID CSCtg48206.
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130424-ucsmulti