46 lines
1.4 KiB
YAML
46 lines
1.4 KiB
YAML
id: elasticbeantalk-takeover
|
|
|
|
info:
|
|
name: ElasticBeanTalk takeover detection
|
|
author: philippedelteil,rotemreiss
|
|
severity: high
|
|
reference:
|
|
- https://github.com/EdOverflow/can-i-take-over-xyz/issues/147 # kudos to @m7mdharoun for sharing process details.
|
|
- https://twitter.com/payloadartist/status/1362035009863880711
|
|
- https://www.youtube.com/watch?v=srKIqhj_ki8
|
|
tags: dns,takeover,aws
|
|
additional-fields:
|
|
comments: |
|
|
Only CNAMEs with region specification are hijackable.
|
|
You need to claim the CNAME in AWS portal (https://aws.amazon.com/) or via AWS CLI to confirm the takeover.
|
|
Do not report this without claiming the CNAME.
|
|
CLI command to verify the availability of the environment:
|
|
aws elasticbeanstalk check-dns-availability --region {AWS_REGION} --cname-prefix {CNAME_PREFIX}
|
|
For example:
|
|
CNAME - 2rs3c.eu-west-1.elasticbeanstalk.com
|
|
Command - aws elasticbeanstalk check-dns-availability --region eu-west-1 --cname-prefix 2rs3c
|
|
|
|
dns:
|
|
- name: "{{FQDN}}"
|
|
type: A
|
|
class: inet
|
|
recursion: true
|
|
retries: 3
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
|
|
- type: regex
|
|
regex:
|
|
- \.(us|af|ap|ca|eu|me|sa)\-(east|west|south|northeast|southeast|central)\-[1-9]+\.elasticbeanstalk\.com
|
|
|
|
- type: word
|
|
words:
|
|
- "NXDOMAIN"
|
|
|
|
extractors:
|
|
- type: regex
|
|
group: 1
|
|
regex:
|
|
- "IN\tCNAME\t(.+)"
|