Vulnerability identifier: #VU56319

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-2021-31785

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
ATS2815
Hardware solutions / Firmware
ATS2819
Hardware solutions / Firmware
MDZ-36-DB
Hardware solutions / Other hardware appliances

Vendor: Actions Technology
Xiaomi

Description

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

The vulnerability exists due to the Bluetooth Classic implementation does not properly handle the reception of multiple LMP_host_connection_req. A remote attacker in radio range can pass specially crafted input to the application and perform a denial of service (DoS) attack.

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

Vulnerable software versions

ATS2815: All versions

ATS2819: All versions

MDZ-36-DB: 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.