Description
mH-DEVELOPER smart home module contains a hardcoded SSH public key in /root/.ssh/authorized_keys, serving as a potential backdoor. The SSH daemon allows root login via key authentication and starts automatically. An attacker with the matching private key can gain a root shell on any affected device, resulting in full system compromise. The key cannot be removed without remounting the file system and survives a factory reset. Vendor notes that this functionality was used only for service purposes. This issue was fixed in version 3.0.30
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
F&F Filipowski mH-DEVELOPER
Default version status: unaffected
0 to < 3.0.30affected