CVE-2020-8792 : Vulnerability Insights and Analysis

The OKLOK (3.1.1) mobile companion app for Fingerprint Bluetooth Padlock FB50 (2.3) has an information-exposure issue where entering a valid barcode can reveal sensitive information.

Understanding CVE-2020-8792

The vulnerability in the OKLOK mobile companion app allows for the exposure of email addresses and lock names.

What is CVE-2020-8792?

The OKLOK mobile app discloses the email address of the account to which a lock is bound and the name of the lock when attempting to add an already-bound lock by its barcode.

The Impact of CVE-2020-8792

This vulnerability enables attackers to access arbitrary users' email addresses and lock names by correctly guessing valid barcode inputs.

Technical Details of CVE-2020-8792

The following technical details provide insight into the vulnerability.

Vulnerability Description

The OKLOK mobile companion app exposes sensitive information when adding a lock by its barcode.

Affected Systems and Versions

Product: OKLOK (3.1.1)
Device: Fingerprint Bluetooth Padlock FB50 (2.3)

Exploitation Mechanism

Attackers can exploit this vulnerability by guessing valid barcode inputs, which follow a predictable pattern, to reveal sensitive data.

Mitigation and Prevention

Protecting against CVE-2020-8792 requires immediate actions and long-term security practices.

Immediate Steps to Take

Avoid adding already-bound locks using barcodes in the OKLOK app.
Regularly check for app updates that address this vulnerability.

Long-Term Security Practices

Implement strong, unique passwords for all accounts.
Educate users on the importance of secure practices when using the app.

Patching and Updates

Update the OKLOK app to the latest version to patch the information-exposure issue.