CVE-2021-34146

Published: Sep 7, 2021Modified: Nov 21, 2024

6.5

Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 2.8 / Impact: 3.6

Source: NVD

Description

The Bluetooth Classic implementation in the Cypress CYW920735Q60EVB does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and restart (crash) of the device by flooding it with LMP_AU_Rand packets after the paging procedure.

Affected (2)

Products: Cypress: Cyw920735q60evb 01 Firmware, Cyw20735b1 Firmware

2 products

Cyw920735q60evb 01 Firmware

Cyw20735b1 Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Cypress Cyw920735q60evb 01 Firmware	All versions

Running on/with	Platform Versions
Cypress Cyw920735q60evb 01	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Cypress Cyw20735b1 Firmware	All versions

Running on/with	Platform Versions
Cypress Cyw20735b1	All versions

References (4)

https://dl.packetstormsecurity.net/papers/general/braktooth.pdf

Source: cve@mitre.org

Technical DescriptionThird Party Advisory

https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices

Source: cve@mitre.org

Vendor Advisory

https://dl.packetstormsecurity.net/papers/general/braktooth.pdf

Source: af854a3a-2127-422b-91ae-364da2661108

Technical DescriptionThird Party Advisory

https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.