CVE-2020-11957 : Vulnerability Insights and Analysis
Learn about CVE-2020-11957, a vulnerability in Cypress PSoC Creator BLE 4.2 versions before 3.64 that allows for predictable random number generation during BLE pairing, enabling potential Man-in-the-Middle attacks.
Cypress PSoC Creator BLE 4.2 component versions before 3.64 have a vulnerability in their Bluetooth Low Energy implementation that generates a random number with insufficient entropy during BLE pairing, potentially enabling a Man-in-the-Middle (MITM) attack.
Understanding CVE-2020-11957
This CVE involves a weakness in the Bluetooth Low Energy pairing process that could be exploited by an attacker within radio range.
What is CVE-2020-11957?
The vulnerability in Cypress PSoC Creator BLE 4.2 component versions before 3.64 allows for the generation of a predictable or brute-forceable random number during BLE pairing, facilitating MITM attacks.
The Impact of CVE-2020-11957
The insufficient entropy in the random number generation process can lead to successful MITM attacks during BLE pairing, compromising the security and integrity of the communication.
Technical Details of CVE-2020-11957
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises from the inadequate entropy in the random number generation process during BLE pairing, making it susceptible to exploitation by attackers.
Affected Systems and Versions
- Product: Cypress PSoC Creator BLE 4.2 component
- Versions Affected: Before version 3.64
Exploitation Mechanism
- Attackers within radio range can leverage the predictable random number to execute MITM attacks during BLE pairing.
Mitigation and Prevention
Protecting systems from the CVE-2020-11957 vulnerability requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update affected systems to version 3.64 or newer to mitigate the vulnerability.
- Implement additional security measures to prevent MITM attacks during BLE pairing.
Long-Term Security Practices
- Regularly update and patch Bluetooth-enabled devices to address security vulnerabilities.
- Educate users on secure pairing practices to minimize the risk of MITM attacks.
- Monitor BLE communications for any suspicious activities that could indicate an ongoing attack.
Patching and Updates
- Apply patches and updates provided by Cypress for the affected versions to enhance the security of BLE pairing processes.