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CVE-2021-34148

Published: Sep 7, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUNVD-CWE-noinfo
6.5MEDIUM
NVD MITRE
EPSS Score
0.6%
Top 55.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfo

Affected Products

Cypress Semiconductor Corporation
commercial·USaka cypress bluetooth sdk, cypress psoc4
Wireless Internet Connectivity for Embedded DevicesEmbedded
Hardware Firmware / cpu-gpu
cypress
commercial
wireless internet connectivity for embedded devicesEmbeddedFirmware
Hardware Firmware / network-adapter
and 1 more affected products View all →

Exploitability

Official Patch Available

References

https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices
cypress.com
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
dl.packetstormsecurity.net
https://www.cybersecurity-help.cz/vdb/SB2021090612
cybersecurity-help.cz
and 1 more references View all →

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