PT-2021-19215 · Chiyu Technology · Bf-431+2

Published 2021-06-04 · Updated 2023-08-08 · CVE-2021-31249

Positive Technologies (AI Summary)

CVSS v2.0

6.4

Medium

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions CHIYU Technology Inc BF-430, BF-431, and BF-450M TCP/IP Converter devices (affected versions not specified)

Description A CRLF injection issue was discovered due to a lack of validation on the redirect= parameter available on multiple CGI components. This allows for potential exploitation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

CVE-2021-31249

Affected Products

Bf-430

Bf-431

Bf-450M

References · 5

• 🔥 https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks · Exploit
• 🔥 https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31249 · Exploit
• https://chiyu-tech.com/msg/message-Firmware-update-87.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31249 · Security Note
• https://t.me/cvenotify/15615 · Telegram Post