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 6.5 MEDIUM
CVSS v2.0 6.4 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31249	Exploit Third Party Advisory
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/	Exploit Third Party Advisory
https://www.chiyu-tech.com/msg/message-Firmware-update-87.html	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:h:chiyu-tech:bf-430:-:*:*:*:*:*:*:*

cpe:2.3:o:chiyu-tech:bf-430_firmware:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:h:chiyu-tech:bf-431:-:*:*:*:*:*:*:*

cpe:2.3:o:chiyu-tech:bf-431_firmware:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:h:chiyu-tech:bf-450m:-:*:*:*:*:*:*:*

cpe:2.3:o:chiyu-tech:bf-450m_firmware:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-06-04 21:15

Updated : 2023-08-08 14:21

NVD link : CVE-2021-31249

Mitre link : CVE-2021-31249

CVE.ORG link : CVE-2021-31249

JSON object : View

Products Affected

chiyu-tech

bf-431
bf-430_firmware
bf-430
bf-450m
bf-450m_firmware
bf-431_firmware

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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