Secure Transport in Apple iOS before 7.1.1 Apple OS X 10.8.x and 10.9.x through 10.9.2 and Apple TV before 6.1.1 does not ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a \triple handshake attack.\