3Kas
Can you exfiltrate data over a serial connection from the client?
When you manage some device over serial the connection is in general bidirectional. But usually the host manages the client by sending commands over the serial connection.
Is there some easy way for some kind of reverse management? Can attackers inside the managed client exfiltrate data from the managing device?
Does a device being managed over serial know that something is attached on the other end (without running any commands)? With ethernet you know at the physical layer that two ends are connected, but serial?
