A weakness has been identified in i-SENS SmartLog App up to 2.6.8 on Android. This affects an unknown function of the component air.SmartLog.android. This manipulation causes hard-coded credentials. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. The vendor explains: The function referenced in the report currently exists in our deployed system. It is related to a developer mode used during the configuration process for Bluetooth pairing between the blood glucose meter and the SmartLog application. This function is intended for configuration purposes related to device integration and testing. (…) [I]n a future application update, we plan to review measures to either remove the developer mode function or restrict access to it.
Weakness
The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components.
Extended Description
There are two main variations of a hard-coded password:
Potential Mitigations
- For inbound authentication: apply strong one-way hashes to your passwords and store those hashes in a configuration file or database with appropriate access control. That way, theft of the file/database still requires the attacker to try to crack the password. When receiving an incoming password during authentication, take the hash of the password and compare it to the hash that you have saved.
- Use randomly assigned salts for each separate hash that you generate. This increases the amount of computation that an attacker needs to conduct a brute-force attack, possibly limiting the effectiveness of the rainbow table method.
- For front-end to back-end connections: Three solutions are possible, although none are complete.