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Denial of Service (DoS) vulnerabilities have been identified in Cisco Unified Communication Manager (formerly known as Cisco CallManager). Exploitation is accomplished with either malformed CTI Manager Messages, malformed SIP Message Vulnerabilities, and/or malformed SCCP Message Vulnerabilities. Products affected include:
Customers are urged to upgrade to 4.3(2)SR2, 6.1(5), 7.1(3b)SU2, or 8.0(1). Note: Cisco Unified Communications Manager version 5.1 reached the End of Software Maintenance on February 13, 2010. Software can be obtained on Cisco's website (a CCO ID and valid contract are both required) Details:
http://www.cisco.com/warp/public/707/cisco-sa-20100303-cucm.shtml