Overview
- Description
- 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.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.5
- Impact score
- 5.9
- Exploitability score
- 1.6
- Vector string
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 5.4
- Impact score
- 6.4
- Exploitability score
- 5.5
- Vector string
- AV:A/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
- nvd@nist.gov
- CWE-331
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:cypress:psoc_4.2_ble:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FE018035-C831-4D25-8E79-C7DCEC211CE5",
"versionEndExcluding": "3.64"
}
],
"operator": "OR"
}
]
}
]