Chiyu iot devices denial of service (dos) Vulnerability / Exploit
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Exploits / Vulnerability Discovered : 2021-06-03 |
Type : webapps |
Platform : hardware
This exploit / vulnerability Chiyu iot devices denial of service (dos) is for educational purposes only and if it is used you will do on your own risk!
[+] Code ...
# Exploit Title: CHIYU IoT Devices - Denial of Service (DoS)
# Date: 01/06/2021
# Exploit Author: sirpedrotavares
# Vendor Homepage: https://www.chiyu-tech.com/msg/msg88.html
# Software Link: https://www.chiyu-tech.com/category-hardware.html
# Version: BIOSENSE, Webpass, and BF-630, BF-631, and SEMAC - all firmware versions < June 2021
# Tested on: BIOSENSE, Webpass, and BF-630, BF-631, and SEMAC
# CVE: CVE-2021-31642
# Publication: https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks
Description: 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.
CVE ID: CVE-2021-31642
CVSS: Medium- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
URL: https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31642
Steps to reproduce:
1. Navigate to the vulnerable device
2. Make a GET request to the CGI component (if.cgi)
3. Append the payload at the end of the vulnerable parameter (page)
4. Submit the request and observe payload execution
Mitigation: The latest version of the CHIYU firmware should be installed
to mitigate this vulnerability.