This attack has zero effect on connections established using mitm-protected paring method. This attack is a non-event to any device that follows proper security design as per BT spec
> BLE 4.2 adds 'Secure Connections'. This is apparently also broken and what's more it was broken in 2008 when the same pairing method was used in Bluetooth 2.1!! It doesn't totally break pairing - only the passkey entry method - and you only learn the passkey, not the LTK. But it does allow an attacker to perform a MitM attack if the passkey isn't changed for every pairing attempt.
Are you talking about the pairing protection that came in with 4.2 - released as a standard 2014-12?
I'd have to check versions of my LE BT gear, but I'd expect most of it is more than 4 years old. Earlier versions had some security on the handshake, but AFAIK just how secure that was depends on how cautious/competent the vendor was.
Happy to get more insightful information from you.
