FreeBSD Security Advisory – The SSL version 3 and TLS protocols support session renegotiation without cryptographically tying the new session parameters to the old parameters.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/83414/FreeBSD-SA-09-15.ssl.txt
Source: https://packetstormsecurity.com/files/83414/FreeBSD-Security-Advisory-SSL.html