Cisco Unified Presence (CUP) before 8.6(3) and Jabber Extensible Communications Platform (aka Jabber XCP) before 5.3 allow remote attackers to cause a denial of service (process crash) via a crafted XMPP stream header, aka Bug ID CSCtu32832.
https://exchange.xforce.ibmcloud.com/vulnerabilities/78457
http://www.securitytracker.com/id?1027520
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120912-cupxcp