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CVE-2020-11957

nvd nist
Published: Jun 9, 2020Modified: Nov 21, 2024

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7.5
Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.6 / Impact: 5.9
Source: NVD

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.

Affected (1)

Cypress
1 product
Psoc 4.2 Ble
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Psoc 4.2 Ble
Before 3.64

Related CWEs

CWE-331
Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

References (2)

Source: cve@mitre.org
ProductVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ProductVendor Advisory

Timeline

No history available yet.