Fortinet FortiNAC - Arbitrary File Write

id: CVE-2022-39952

info:
  name: Fortinet FortiNAC - Arbitrary File Write
  author: dwisiswant0
  severity: critical
  description: |
    Fortinet FortiNAC is susceptible to arbitrary file write. An external control of the file name or path can allow an attacker to execute unauthorized code or commands via specifically crafted HTTP request, thus making it possible to obtain sensitive information, modify data, and/or execute unauthorized operations. Affected versions are 9.4.0, 9.2.0 through 9.2.5, 9.1.0 through 9.1.7, 8.8.0 through 8.8.11, 8.7.0 through 8.7.6, 8.6.0 through 8.6.5, 8.5.0 through 8.5.4, and 8.3.7.
  impact: |
    Successful exploitation of this vulnerability could lead to unauthorized access, data loss.
  remediation: Upgrade to 9.4.1, 9.2.6, 9.2.6, 9.1.8, 7.2.0 or above.
  reference:
    - https://fortiguard.com/psirt/FG-IR-22-300
    - https://www.horizon3.ai/fortinet-fortinac-cve-2022-39952-deep-dive-and-iocs/
    - https://github.com/horizon3ai/CVE-2022-39952
    - https://nvd.nist.gov/vuln/detail/CVE-2022-39952
    - https://github.com/1f3lse/taiE
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-39952
    cwe-id: CWE-668,CWE-73
    epss-score: 0.99794
    epss-percentile: 0.99957
    cpe: cpe:2.3:a:fortinet:fortinac:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: fortinet
    product: fortinac
    shodan-query:
      - title:"FortiNAC"
      - http.title:"fortinac"
    fofa-query: title="fortinac"
    google-query: intitle:"fortinac"
  tags: cve,cve2022,fortinet,fortinac,fileupload,rce,intrusive,vkev,vuln
variables:
  boundaryId: "{{hex_encode(rand_text_alphanumeric(16))}}"

http:
  - method: POST
    path:
      - "{{BaseURL}}/configWizard/keyUpload.jsp"

    body: |
      --{{boundaryId}}
      Content-Disposition: form-data; name="key"; filename="{{to_lower(rand_text_alphanumeric(8))}}.zip"

      {{randstr}}
      --{{boundaryId}}--

    headers:
      Content-Type: "multipart/form-data; boundary={{boundaryId}}"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "zipUploadSuccess"
          - "SuccessfulUpload"
        condition: and

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

      - type: status
        status:
          - 200
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