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.
References
Link | Resource |
---|---|
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf | Technical Description Third Party Advisory |
https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices | Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-09-07T06:26:51
Updated: 2021-09-07T06:26:51
Reserved: 2021-06-07T00:00:00
Link: CVE-2021-34147
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-09-07T07:15:07.373
Modified: 2021-09-14T15:15:09.470
Link: CVE-2021-34147
JSON object: View
Redhat Information
No data.
CWE