FKIE_CVE-2020-11957

Vulnerability from fkie_nvd - Published: 2020-06-09 19:15 - Updated: 2024-11-21 04:58
Severity ?
7.5 (High) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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
cve@mitre.orghttps://www.cypress.com/file/504466/downloadProduct, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.cypress.com/file/504466/downloadProduct, Vendor Advisory
Impacted products
Vendor Product Version
cypress psoc_4.2_ble *
To clipboard 

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      "value": "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."
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    }
  ],
  "id": "CVE-2020-11957",
  "lastModified": "2024-11-21T04:58:59.200",
  "metrics": {
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        "baseSeverity": "MEDIUM",
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  "published": "2020-06-09T19:15:10.120",
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