Nordic Semiconductor Android BLE Library through 2.2.1 and DFU Library through 1.10.4 for Android (as used by nRF Connect and other applications) can engage in unencrypted communication while showing the user that the communication is purportedly encrypted. The problem is in bond creation (e.g., internalCreateBond in BleManagerHandler).
Weakness
The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Android_ble_library | Nordicsemi | * | 2.2.1 (including) |
| Dfu_library | Nordicsemi | * | 1.10.4 (including) |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/102.html
- https://cwe.mitre.org/data/definitions/117.html
- https://cwe.mitre.org/data/definitions/383.html
- https://cwe.mitre.org/data/definitions/477.html
- https://cwe.mitre.org/data/definitions/65.html
References
- https://github.com/NordicSemiconductor/Android-BLE-Library/commits/master
- https://github.com/NordicSemiconductor/Android-DFU-Library/commits/release
- https://secretdiary.ninja/index.php/2020/07/03/norec-attack-stripping-ble-encryption-from-nordicsemis-android-library-cve-2020-15509/
- https://github.com/NordicSemiconductor/Android-BLE-Library/commits/master
- https://github.com/NordicSemiconductor/Android-DFU-Library/commits/release
- https://secretdiary.ninja/index.php/2020/07/03/norec-attack-stripping-ble-encryption-from-nordicsemis-android-library-cve-2020-15509/