// For flags

CVE-2021-34148

 

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Una implementación de Bluetooth Classic en la pila WICED BT de Cypress versiones hasta 2.9.0 para los dispositivos CYW20735B1, no maneja apropiadamente la recepción de LMP_max_slot con una longitud ACL mayor después de completar el procedimiento de configuración de LMP, permitiendo a atacantes en el rango de radio desencadenar una denegación de servicio (bloqueo del firmware) por medio de un paquete LMP diseñado

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Adjacent
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-06-07 CVE Reserved
  • 2021-09-03 CVE Published
  • 2024-05-23 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cypress
Search vendor "Cypress"
 Wireless Internet Connectivity For Embedded Devices
Search vendor "Cypress" for product "Wireless Internet Connectivity For Embedded Devices"
 <= 2.9.0
Search vendor "Cypress" for product "Wireless Internet Connectivity For Embedded Devices" and version " <= 2.9.0"
-
Affected
in Cypress
Search vendor "Cypress"
 Cyw20735b1
Search vendor "Cypress" for product "Cyw20735b1"
--
Safe