What is the severity of CVE-2021-34145?

The severity of CVE-2021-34145 is medium with a CVSS score of 5.3.

What is the affected software for CVE-2021-34145?

The affected software for CVE-2021-34145 is Cypress Wireless Internet Connectivity For Embedded Devices version up to and including 2.9.0.

How does CVE-2021-34145 affect Cypress Cyw20735b1 devices?

Cypress Cyw20735b1 devices are not vulnerable to CVE-2021-34145.

What is the recommended solution for CVE-2021-34145?

Update the Cypress WICED BT stack to version 2.9.1 or later to fix CVE-2021-34145.

Are there any additional references for CVE-2021-34145?

Yes, you can refer to the following links for more information: [BrakTooth Research Paper](https://dl.packetstormsecurity.net/papers/general/braktooth.pdf) and [Cypress Documentation](https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices)

Vulnerability/
CVE-2021-34145

medium

5.3

7/9/2021

4/8/2024

CVE-2021-34145

First published: Tue Sep 07 2021(Updated: )

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 an invalid Baseband packet type (and LT_ADDRESS and LT_ADDR) 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.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Cypress Wireless Internet Connectivity For Embedded Devices	<=2.9.0
Cypress Cyw20735b1

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-34145?
The severity of CVE-2021-34145 is medium with a CVSS score of 5.3.
What is the affected software for CVE-2021-34145?
The affected software for CVE-2021-34145 is Cypress Wireless Internet Connectivity For Embedded Devices version up to and including 2.9.0.
How does CVE-2021-34145 affect Cypress Cyw20735b1 devices?
Cypress Cyw20735b1 devices are not vulnerable to CVE-2021-34145.
What is the recommended solution for CVE-2021-34145?
Update the Cypress WICED BT stack to version 2.9.1 or later to fix CVE-2021-34145.
Are there any additional references for CVE-2021-34145?
Yes, you can refer to the following links for more information: [BrakTooth Research Paper](https://dl.packetstormsecurity.net/papers/general/braktooth.pdf) and [Cypress Documentation](https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices)

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canonical/cypress wireless internet connectivity for embedded devices
version/cypress wireless internet connectivity for embedded devices/2.9.0
canonical/cypress cyw20735b1

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