CVE-2021-34148

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 WICED BT stack through 2.9.0 for CYW20735B1 devices does not properly handle the reception of LMP_max_slot with a greater ACL Length after completion of the LMP setup procedure, allowing attackers in radio range to trigger a denial of service (firmware crash) via a crafted LMP packet.

Affected (1)

Products: Cypress: Wireless Internet Connectivity For Embedded Devices

1 product

Wireless Internet Connectivity For Embedded Devices

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Cypress Wireless Internet Connectivity For Embedded Devices	Up to 2.9.0

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.