CVE-2020-10134 : Exploit Details and Defense Strategies
Learn about CVE-2020-10134, a vulnerability in Bluetooth devices supporting LE and specific BR/EDR implementations, allowing unauthenticated attackers to acquire credentials through adjacent access during pairing.
Bluetooth Core v5.2 and earlier versions may allow unauthenticated attackers to acquire credentials through adjacent access during pairing, leading to potential security risks.
Understanding CVE-2020-10134
This CVE identifies a vulnerability in Bluetooth devices that support LE and specific BR/EDR implementations, potentially enabling method confusion attacks.
What is CVE-2020-10134?
Pairing in Bluetooth Core v5.2 and earlier versions may allow unauthenticated attackers to obtain credentials by exploiting adjacent access during the pairing process.
The Impact of CVE-2020-10134
- Attackers could acquire credentials with two pairing devices via adjacent access, potentially compromising confidentiality and weakening device-local protections.
- An unauthenticated attacker might initiate Bluetooth operations on attacked devices exposed by enabled Bluetooth profiles.
Technical Details of CVE-2020-10134
Bluetooth devices supporting LE and specific BR/EDR implementations are vulnerable to method confusion attacks.
Vulnerability Description
- Unauthenticated attackers can acquire credentials by exploiting adjacent access during the pairing process.
Affected Systems and Versions
- Product: LE
- Vendor: Bluetooth
- Versions affected: <= 5.2
Exploitation Mechanism
- Attackers can exploit the vulnerability by initiating different pairing methods in each peer device and completing both pairing procedures with the MITM using confirmation numbers.
Mitigation and Prevention
Immediate Steps to Take
- Update affected devices to versions beyond 5.2 to mitigate the vulnerability.
- Be cautious during Bluetooth pairing processes and avoid pairing with untrusted devices.
Long-Term Security Practices
- Regularly update Bluetooth devices to the latest firmware to address security vulnerabilities.
- Implement secure pairing practices and avoid pairing in insecure environments.
Patch and Updates
- Stay informed about security advisories from Bluetooth technology providers and apply patches promptly.