CVE-2021-31642

35Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendepss 44%

from disclosure to weapon2 days

Published on NVDJun 1

1st PoC+2d

exploitation probability

44%top 1% of all CVEs

observed exploitation

nono source reports it

2 public exploit(s)

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.

Affected products

n/a · n/a

public PoCs found — 2

exploitdbwww.exploit-db.com/exploits/49937unverified cve_referencepacketstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.htmlunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.html https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31642 https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/https://www.chiyu-tech.com/msg/message-Firmware-update-87.html