published April 11, 2019
⚠️ Your Jetson TX1 and TX2 might be sharing secrets! The default SSH keys in the Linux for Tegra operating system aren’t swapped out for unique ones after setup—think of it as using the same hotel key for every guest. 🔑 Imagine checking into a hotel where every guest was given the same key. If someone had access to the hotel’s guest list, they could waltz into anyone’s room. Similarly, if the SSH keys aren’t changed, anyone with the right access could peek into your system. Information disclosure is a real risk here. If an attacker figures out you’re still using those default SSH keys, they could potentially access sensitive data and configurations, leading to compromised systems and unintended leaks of information.
Imagine checking into a hotel where every guest was given the same key. If someone had access to the hotel’s guest list, they could waltz into anyone’s room. Similarly, if the SSH keys aren’t changed, anyone with the right access could peek into your system. This vulnerability arises because the SSH keys in the sample root filesystem for NVIDIA's Linux for Tegra (L4T) are not replaced with unique host keys during the flashing process, leaving systems vulnerable to unauthorized access.
Information disclosure is a real risk here. If an attacker figures out you’re still using those default SSH keys, they could potentially access sensitive data and configurations, leading to compromised systems and unintended leaks of information. To mitigate this risk, ensure that you replace the default SSH keys with unique ones immediately after flashing. Also, upgrade your system to version R28.3 or later to avoid this vulnerability altogether. You’ve got this! With a few tweaks, your systems will be much safer in no time. 🛡️