CVE-2020-26559 : Exploit Details and Defense Strategies
Learn about CVE-2020-26559, a Bluetooth Mesh Provisioning vulnerability allowing unauthorized device provisioning. Find mitigation steps and long-term security practices.
Bluetooth Mesh Provisioning vulnerability in the Bluetooth Mesh profile 1.0 and 1.0.1 allows nearby devices to identify AuthValue, potentially enabling unauthorized provisioning.
Understanding CVE-2020-26559
This CVE involves a security vulnerability in Bluetooth Mesh Provisioning that could lead to unauthorized provisioning of devices.
What is CVE-2020-26559?
The vulnerability in the Bluetooth Mesh profile 1.0 and 1.0.1 allows a nearby device participating in the provisioning protocol to identify the AuthValue used, potentially enabling unauthorized provisioning without brute-forcing the AuthValue.
The Impact of CVE-2020-26559
The vulnerability could result in unauthorized devices completing provisioning without the necessary AuthValue, posing a security risk to the network and potentially compromising device integrity.
Technical Details of CVE-2020-26559
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability allows nearby devices to identify the AuthValue used in the provisioning process, potentially leading to unauthorized provisioning.
Affected Systems and Versions
- Affected systems: Bluetooth Mesh profile 1.0 and 1.0.1
- Versions: Not applicable
Exploitation Mechanism
The vulnerability permits a nearby device to identify the AuthValue by leveraging the Provisioner's public key, confirmation number, and nonce provided by the provisioning device.
Mitigation and Prevention
Protecting against CVE-2020-26559 is crucial for maintaining network security.
Immediate Steps to Take
- Disable Bluetooth Mesh Provisioning if not essential
- Implement strong authentication mechanisms
- Regularly monitor for unauthorized provisioning attempts
Long-Term Security Practices
- Keep Bluetooth Mesh profiles updated
- Conduct regular security audits and assessments
- Educate users on secure provisioning practices
Patching and Updates
- Apply patches and updates from Bluetooth Mesh profile providers
- Stay informed about security advisories and best practices for Bluetooth Mesh security