Description
Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access Control Server Solution Engine (ACS Solution Engine) 3.3.1, when the EAP-TLS protocol is enabled, does not properly handle expired or untrusted certificates, which allows remote attackers to bypass authentication and gain unauthorized access via a "cryptographically correct" certificate with valid fields such as the username.
Affected products
- Cisco / secure_access_control_server3.3(1) – 3.3(1)
- Cisco / secure_access_control_server3.3.1 – 3.3.1
- Cisco / secure_acs_solution_engine