Delete elasticbeantalk-takeover.yaml
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id: elasticbeantalk-takeover
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info:
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name: ElasticBeanTalk Subdomain Takeover Detection
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author: philippedelteil,rotemreiss
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severity: high
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description: ElasticBeanTalk subdomain takeover detected. A subdomain takeover occurs when an attacker gains control over a subdomain of a target domain. Typically, this happens when the subdomain has a canonical
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name (CNAME) in the Domain Name System (DNS), but no host is providing content for it.
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reference:
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- https://github.com/EdOverflow/can-i-take-over-xyz/issues/147
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- https://twitter.com/payloadartist/status/1362035009863880711
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- https://www.youtube.com/watch?v=srKIqhj_ki8
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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-404
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metadata:
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comments: |
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Only CNAMEs with region specification are hijackable.
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You need to claim the CNAME in AWS portal (https://aws.amazon.com/) or via AWS CLI to confirm the takeover.
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Do not report this without claiming the CNAME.
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CLI command to verify the availability of the environment:
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aws elasticbeanstalk check-dns-availability --region {AWS_REGION} --cname-prefix {CNAME_PREFIX}
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For example:
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CNAME - 2rs3c.eu-west-1.elasticbeanstalk.com
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Command - aws elasticbeanstalk check-dns-availability --region eu-west-1 --cname-prefix 2rs3c
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tags: dns,takeover,aws
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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: regex
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regex:
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- \.(us|af|ap|ca|eu|me|sa)\-(east|west|south|northeast|southeast|central)\-[1-9]+\.elasticbeanstalk\.com
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- type: word
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words:
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- "NXDOMAIN"
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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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# Enhanced by mp on 2022/03/14
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