Description
The Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320, uses RS-485 communication between the server and the microcontroller without cryptographic protection. An attacker with access to the communication path between the server and the microcontroller can sniff RS-485 messages and replay previously observed messages. This can be used, for example, to spoof a "quit alarm" message and continuously deactivate the safe alarm.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wertheim | Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller) | Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320 | — |
References
- https://wertheim-safes.com/safe-deposit-boxes/ product
- https://r.sec-consult.com/wertdev third-party-advisory