CVE-2020-15802 : Vulnerability Insights and Analysis

Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. This vulnerability in the Bluetooth Core Specification v4.2 and v5.0 could enable an unauthenticated user to establish a bonding with one transport and potentially overwrite authenticated keys.

Understanding CVE-2020-15802

BLURtooth is a security issue in Bluetooth that affects devices using versions prior to 5.1, allowing unauthorized users to manipulate key authentication.

What is CVE-2020-15802?

BLURtooth is a vulnerability that arises from Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0. It permits an unauthenticated user to establish a bonding with one transport, potentially compromising security.

The Impact of CVE-2020-15802

The vulnerability could lead to man-in-the-middle attacks, where an attacker could replace authenticated keys with unauthenticated ones, posing a significant security risk to affected devices.

Technical Details of CVE-2020-15802

BLURtooth vulnerability details and affected systems.

Vulnerability Description

Devices supporting Bluetooth before version 5.1 are susceptible to BLURtooth, enabling unauthorized users to establish unauthorized bonds and compromise security keys.

Affected Systems and Versions

Devices using Bluetooth versions prior to 5.1

Exploitation Mechanism

Unauthenticated users can establish bonds with one transport and potentially overwrite authenticated keys.

Mitigation and Prevention

Steps to mitigate and prevent the BLURtooth vulnerability.

Immediate Steps to Take

Update devices to Bluetooth version 5.1 or higher to mitigate the vulnerability.
Avoid connecting to untrusted Bluetooth devices.

Long-Term Security Practices

Regularly update Bluetooth-enabled devices to the latest firmware.
Implement strong encryption and authentication mechanisms for Bluetooth connections.

Patching and Updates

Apply patches provided by device manufacturers to address the BLURtooth vulnerability.