| Article No° | Product Name | Affected Version(s) |
|---|---|---|
| 758-918 | WAGO WLAN ETHERNET Gateway | all versions |
| 758-918/0000-0001 | WAGO WLAN ETHERNET Gateway | all versions |
A vulnerability allows Bluetooth LE pairing traffic to be sniffed and used to bypass authentication for pairing.
Bluetooth® Low Energy Pairing in Bluetooth Core Specification v4.0 through v5.3 may permit an unauthenticated MITM to acquire credentials with two pairing devices via adjacent access when the MITM negotiates Legacy Passkey Pairing with the pairing Initiator and Secure Connections Passkey Pairing with the pairing Responder and brute forces the Passkey entered by the user into the Initiator. The MITM attacker can use the identified Passkey value to complete authentication with the Responder via Bluetooth pairing method confusion.
An unauthenticated attacker can acquire the pairing credentials to authenticate itself to an affected Bluetooth Low Energy device in order to use it. The Attack Complexity is high, the attacker must be adjacent to the network and the attacker must interact with the devices to make use of vulnerability.
Additional resources:
• HMS Security Advisory HMSSAR-2023-05-02-001
Mitigation
Disable Bluetooth LE if not used.
Remediation
No firmware update will be released to fix this issue.
CERT@VDE coordinated with WAGO.