Cisco Unified Communications Manager IM and Presence Service contains a denial of service (DoS) vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. Exploitation of this vulnerability could cause an interruption of presence services.

Cisco has released free software updates that address this vulnerability. 

There are no workarounds available to mitigate exploitation of this vulnerability.

This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130821-cup

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