CVE-2020-11957
First published: Tue Jun 09 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cypress Psoc 4.2 Ble | <3.64 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID of this issue is CVE-2020-11957.
What is the severity of CVE-2020-11957?
The severity of CVE-2020-11957 is high (7.5).
What is the affected software?
The affected software is Cypress PSoC Creator BLE 4.2 component versions before 3.64.
What is the description of CVE-2020-11957?
CVE-2020-11957 is a vulnerability in the Bluetooth Low Energy implementation in Cypress PSoC Creator BLE 4.2 component versions before 3.64, which generates a random number (Pairing Random) with significantly less entropy than the specified 128 bits during BLE pairing.
How can I fix CVE-2020-11957?
To fix CVE-2020-11957, update the Cypress PSoC Creator BLE 4.2 component to version 3.64 or later.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/tags
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- vendor/cypress
- canonical/cypress psoc 4.2 ble