Even though Firefox and Chrome both use the same TLS implementation (NSS's libssl), the ways in which Firefox and Chrome use it differ. Based on discussions wit

Even though Firefox and Chrome both use the same TLS implementation (NSS's libssl), the ways in which Firefox and Chrome use it differ. Based on discussions with the credited researchers and with other members of the NSS team, Firefox doesn't need to implement such a restriction, so there's nothing to worry about as far as Firefox is concerned. And, that's about all I should say about it at this time, I think.