CVE-2021-31249

A CRLF injection vulnerability was found on BF-430, BF-431, and BF-450M TCP/IP Converter devices from CHIYU Technology Inc due to a lack of validation on the parameter redirect= available on multiple CGI components.

CVSS v3.1 NVD

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

CVSS v2.0 NVD

6.4 MEDIUMAV:N/AC:L/Au:N/C:P/I:P/A:N

EPSS

18.00% chance of exploitation in the next 30 days, 97th percentile

Nuclei

medium · CWE-74

Published

2021-06-04

Updated

2024-08-03

Proof-of-concept exploits (1)

• https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021…

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-31249.yaml

Security advisories

• https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
• https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-at…

References

• CVE Record
• NVD entry