CVE-2021-31642

A denial of service condition exists after an integer overflow in several IoT devices from CHIYU Technology, including BIOSENSE, Webpass, and BF-630, BF-631, and SEMAC. The vulnerability can be explored by sending an unexpected integer (> 32 bits) on the page parameter that will crash the web portal and making it unavailable until a reboot of the device.

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

6.8 MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:C

EPSS

43.67% chance of exploitation in the next 30 days, 99th percentile

Published

2021-06-01

Updated

2024-08-03

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.html
• https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021…

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/49937

References

• CVE Record
• NVD entry

Related

• CVE-2021-31641
• CVE-2021-31643
• CVE-2021-3164
• CVE-2021-31645
• CVE-2021-31630
• CVE-2021-3165