40 lines
1.1 KiB
YAML
40 lines
1.1 KiB
YAML
id: detect-dangling-cname
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info:
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name: CNAME Detect Dangling
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author: pdteam,nytr0gen
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severity: info
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description: A CNAME detect dangling condition was discovered. Most commonly this relates to failing to remove records from the zone once they are no longer needed.
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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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classification:
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cwe-id: CWE-200
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metadata:
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max-request: 1
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tags: dns,takeover
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dns:
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- name: "{{FQDN}}"
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type: A
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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: regex
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part: answer
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regex:
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- "IN\tCNAME\t(.+)$"
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extractors:
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- type: dsl
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dsl:
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- cname
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# digest: 4a0a0047304502201b035521c9d0b1afe37b2bb5326afde1f0022e730b8dd87fa3d247daa558c8a4022100fe8ffe8dec0946abcb2cea2241ed5836041f0fb092417c2eb3ff9b2625ad4dac:922c64590222798bb761d5b6d8e72950
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