CVE-2021-34145

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.

CVSS v3 5.3 MEDIUM
CVSS v2.0 2.9 LOW

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.9^/10

CVSS v2.0 : LOW

Vector : AV:A/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 5.5 / Impact : 2.9

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf	Broken Link
https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cypress:wireless_internet_connectivity_for_embedded_devices:*:*:*:*:*:*:*:*

cpe:2.3:h:cypress:cyw20735b1:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-09-07 07:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-34145

Mitre link : CVE-2021-34145

CVE.ORG link : CVE-2021-34145

JSON object : View

Products Affected

cypress

wireless_internet_connectivity_for_embedded_devices
cyw20735b1

CWE

NVD-CWE-noinfo

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