Cisco Secure Access Control System Password Validation Vulnerability

Last Update Date: 8 Nov 2012 11:24 Release Date: 8 Nov 2012 4860 Views

RISK: Medium Risk

TYPE: Security software and application - Security Software & Appliance

A vulnerability has been identified in Cisco Secure Access Control System. A remote user can bypass TACACS+ authentication.

The system does not properly validate user-supplied passwords when TACACS+ is the authentication protocol and the Cisco Secure Access Control System (ACS) is configured with an LDAP external identity store.

A remote user with knowledge of a valid username can send a specially crafted sequence of characters when prompted for the user password to bypass TACACS+ authentication.