CVE-2020-11957

The Bluetooth Low Energy implementation in Cypress PSoC Creator BLE 4.2 component versions before 3.64 generates a random number (Pairing Random) with…

published June 9, 2020

CVSS
—
EPSS
0%
Percentile
32.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00394 · 32.4th percentile
Published
2020-06-09T18:26Z
EPSS history
Timeline
  • 09 JUN 18:26Z
    The Bluetooth Low Energy implementation in Cypress PSoC Creator BLE 4.2 component versions before 3.64 generates a random number (Pairing Random) with…
    cvelistv5