Vulnerability Details : CVE-2021-31249
Potential exploit
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.
Products affected by CVE-2021-31249
- cpe:2.3:o:chiyu-tech:bf-430_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:bf-431_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:bf-450m_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31249
87.85%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 99 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31249
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:P/A:N |
10.0
|
4.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
3.9
|
2.5
|
NIST |
References for CVE-2021-31249
-
https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
Firmware updateVendor Advisory
-
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31249
CHIYU IoT devices - Red Teaming and Malware AnalysisExploit;Third Party Advisory
-
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
Dancing in the IoT: CHIYU devices vulnerable to remote attacksExploit;Third Party Advisory
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