CVE-2019-13143 : Security Advisory and Response

A vulnerability related to HTTP parameters has been identified in the Shenzhen Dragon Brothers Fingerprint Bluetooth Round Padlock FB50 version 2.3, allowing an attacker to take complete control over the padlock.

Understanding CVE-2019-13143

This CVE describes a security issue in the Shenzhen Dragon Brothers Fingerprint Bluetooth Round Padlock FB50 version 2.3.

What is CVE-2019-13143?

This vulnerability enables an attacker to disassociate the current owner of the padlock and establish themselves as the new owner by acquiring the user ID, user name, and the MAC address of the padlock.

The Impact of CVE-2019-13143

Exploiting this vulnerability grants the attacker complete control over the padlock, potentially locking out the legitimate owner.

Technical Details of CVE-2019-13143

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows an attacker to seize ownership of the padlock by obtaining the user ID, user name, and MAC address, leading to complete control over the device.

Affected Systems and Versions

Shenzhen Dragon Brothers Fingerprint Bluetooth Round Padlock FB50 version 2.3

Exploitation Mechanism

Attackers can easily acquire the user ID, user name, and MAC address through APIs in the Android or iOS application.
With just the MAC address, an attacker can take over the padlock, denying access to the legitimate user.

Mitigation and Prevention

Protecting against and addressing the CVE vulnerability.

Immediate Steps to Take

Avoid sharing user ID, user name, and MAC address publicly or on untrusted platforms.
Regularly monitor the ownership status of the padlock.

Long-Term Security Practices

Implement strong authentication mechanisms for accessing the padlock.
Regularly update the padlock's firmware and associated applications.

Patching and Updates

Apply patches and updates provided by the vendor to address the vulnerability.