2021-07-22 08:29:34 +00:00
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id: detect-dangling-cname
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info:
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name: Detect Dangling cname
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author: pdteam,nytr0gen
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severity: info
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tags: dns,takeover
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reference: |
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- https://securitytrails.com/blog/subdomain-takeover-tips
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- https://nominetcyber.com/dangling-dns-is-no-laughing-matter/
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- https://nabeelxy.medium.com/dangling-dns-records-are-a-real-vulnerability-361f2a29d37f
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- https://docs.microsoft.com/en-us/azure/security/fundamentals/subdomain-takeover
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dns:
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- name: "{{FQDN}}"
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type: A
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class: inet
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recursion: true
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2021-07-22 08:33:27 +00:00
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retries: 3
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2021-07-22 08:29:34 +00:00
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matchers-condition: and
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matchers:
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- type: word
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words:
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- "NXDOMAIN"
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- type: word
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words:
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- "IN\tCNAME"
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extractors:
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- type: regex
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group: 1
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regex:
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- "IN\tCNAME\t(.+)"
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