Vulnerability identifier: #VU56324

Vulnerability risk: Low

CVSSv3.1: 6 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-34143

CWE-ID: CWE-122

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
AB32VG1
Hardware solutions / Firmware
CC256XCQFN-EM
Hardware solutions / Firmware
CYW920735Q60EVB
Hardware solutions / Firmware
AC6366C_DEMO_V1.0
Hardware solutions / Firmware

Vendor: Texas Instruments Incorporated
Cypress Semiconductor Corporation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the Bluetooth Classic implementation on several chipsets does not properly handle the reception of continuous unsolicited LMP responses. A remote attacker in radio range can pass specially crafted data to the application, trigger heap-based buffer overflow and cause a denial of service condition on the target system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

AB32VG1: All versions

CC256XCQFN-EM: All versions

CYW920735Q60EVB: All versions

AC6366C_DEMO_V1.0: All versions

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External links
http://asset-group.github.io/disclosures/braktooth/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.