CVE-2021-31611 Information

Description

The Bluetooth Classic implementation on Zhuhai Jieli AC690X and AC692X devices does not properly handle an out-of-order LMP Setup procedure that is followed by a malformed LMP packet allowing attackers in radio range to deadlock a device via a crafted LMP packet. The user needs to manually reboot the device to restore communication.

CVSS Vector

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

Reference

https://launchstudio.bluetooth.com/ListingDetails/58628 https://launchstudio.bluetooth.com/ListingDetails/19746 https://dl.packetstormsecurity.net/papers/general/braktooth.pdf http://www.zh-jieli.com/product/68-cn.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.7