The Cisco ACE Application Control Engine Module and Cisco ACE 4710 Application Control Engine contain the following DoS vulnerabilities: Real-Time Streaming Protocol (RTSP) inspection DoS vulnerability HTTP, RTSP, and Session Initiation Protocol (SIP) inspection DoS vulnerability Secure Socket Layer (SSL) DoS vulnerability SIP inspection DoS vulnerability Cisco has released free software updates for affected customers. Workarounds that mitigate some of the vulnerabilities are available. Note: These vulnerabilities are independent of each other. A device may be affected by one vulnerability and not affected by another. This advisory is posted at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100811-ace .