CERT and Cisco have issued a warning about a vulnerability in the Cisco IOS starting at version 11.3 and affecting all later versions.

If your Cisco equipment is HTTP enabled and you're not using TACACS+ or RADIUS for authentication it is vulnerable to complete takeover. The hack is very simple.

Please read the Cisco warning and/or the CERT advisory for further information.

The warnings were released yesterday.

Happy Hacker Stopping.

Larry Diffey