CVE-2021-34146

The Bluetooth Classic implementation in the Cypress CYW920735Q60EVB does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and restart (crash) of the device by flooding it with LMP_AU_Rand packets after the paging procedure.
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:cypress:cyw920735q60evb-01_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cypress:cyw920735q60evb-01:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:cypress:cyw20735b1_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cypress:cyw20735b1:-:*:*:*:*:*:*:*

History

14 Sep 2021, 14:56

Type Values Removed Values Added
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown
v2 : 6.1
v3 : 6.5
CPE cpe:2.3:o:cypress:cyw20735b1_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cypress:cyw20735b1:-:*:*:*:*:*:*:*
cpe:2.3:o:cypress:cyw920735q60evb-01_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:cypress:cyw920735q60evb-01:-:*:*:*:*:*:*:*
References (MISC) https://dl.packetstormsecurity.net/papers/general/braktooth.pdf - (MISC) https://dl.packetstormsecurity.net/papers/general/braktooth.pdf - Technical Description, Third Party Advisory
References (MISC) https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices - (MISC) https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices - Vendor Advisory

07 Sep 2021, 07:15

Type Values Removed Values Added
New CVE

Information

Published : 2021-09-07 07:15

Updated : 2024-02-04 21:47


NVD link : CVE-2021-34146

Mitre link : CVE-2021-34146

CVE.ORG link : CVE-2021-34146


JSON object : View

Products Affected

cypress

  • cyw920735q60evb-01
  • cyw920735q60evb-01_firmware
  • cyw20735b1_firmware
  • cyw20735b1