Cisco Security Response: Cisco Secure ACS Denial Of Service Vulnerability
A specially crafted Remote Authentication Dial In User Service (RADIUS) Extensible Authentication Protocol (EAP) Message Attribute packet sent to the Cisco Secure Access Control Server (ACS) can crash the CSRadius and CSAuth processes of Cisco Secure ACS.
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Cisco Security Advisory: Remote Access VPN and SIP Vulnerabilities in Cisco PIX and Cisco ASA
Multiple vulnerabilities exist in the Cisco ASA 5500 Series Adaptive Security Appliances and Cisco PIX Security Appliances that may result in a reload of the device or disclosure of confidential information.
The full details are available here