CVE-2021-34147
The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 does not properly handle the reception of a malformed LMP timing accuracy response followed by multiple reconnections to the link slave, allowing attackers to exhaust device BT resources and eventually trigger a crash via multiple attempts of sending a crafted LMP timing accuracy response followed by a sudden reconnection with a random BDAddress.
Published:Sep 7, 2021
Last Modified:Nov 21, 2024
EPS:Sep 7, 2021
EPSS Score:0.00101
CVSS Score:6.5
Affected Products
Vendor
Product
Action
Vendor
Cypress
Product
Cyw20735b1
Cypress
Cyw20735b1
Vendor
Cypress
Product
Wireless Internet Connectivity For Embedded Devices
Cypress
Wireless Internet Connectivity For Embedded Devices
Exploits
No exploit reference
Common Weakness Enumeration
No CWE recorded yet
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
