CVE-2020-8994 Information

Description

An issue was discovered on XIAOMI AI speaker MDZ-25-DT 1.34.36 and 1.40.14. Attackers can get root shell by accessing the UART interface and then they can read Wi-Fi SSID or password read the dialogue text files between users and XIAOMI AI speaker use Text-To-Speech tools pretend XIAOMI speakers’ voice achieve social engineering attacks eavesdrop on users and record what XIAOMI AI speaker hears delete the entire XIAOMI AI speaker system modify system files stop voice assistant service start the XIAOMI AI speaker’s SSH service as a backdoor

CVSS Vector

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

Reference

https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2020-8994.md https://www.usenix.org/sites/default/files/soups2018posters-lau.pdf https://youtu.be/yCadG38yZW8

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

6.8