The Bluetooth Low Energy implementation in Cypress PSoC Creator BLE 4.2 component versions before 3.64 generates a random number (Pairing Random) with significantly less entropy than the specified 128 bits during BLE pairing. This is the case for both authenticated and unauthenticated pairing with both LE Secure Connections as well as LE Legacy Pairing. A predictable or brute-forceable random number allows an attacker (in radio range) to perform a MITM attack during BLE pairing.
References
Link | Resource |
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https://www.cypress.com/file/504466/download | Product Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2020-06-09T18:26:54
Updated: 2020-06-09T18:26:54
Reserved: 2020-04-20T00:00:00
Link: CVE-2020-11957
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-06-09T19:15:10.120
Modified: 2020-06-22T13:42:04.967
Link: CVE-2020-11957
JSON object: View
Redhat Information
No data.
CWE