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cve[email protected]CVE-2021-34145
HistorySep 07, 2021 - 7:15 a.m.

CVE-2021-34145

2021-09-0707:15:07
[email protected]
web.nvd.nist.gov
21
cypress
wiced bt
cyw20735b1
bluetooth classic
cve-2021-34145
vulnerability
denial of service
nvd

2.9 Low

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.3 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

5.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.3%

JSON

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.

Affected configurations

NVD
Node
cypresswireless_internet_connectivity_for_embedded_devicesRange≤2.9.0
AND
cypresscyw20735b1Match-

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2.9 Low

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.3 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

5.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.3%

JSON
Related for CVE-2021-34145
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