Missing Certificate Authority Authorization rule
G
Gratipay
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Reported by
gujjuboy10x00
Vulnerability Details
Technical details and impact analysis
Hi Team,
# Summary
Certificate Authority Authorization (supported by LetsEncrypt and other CAs) allows a domain owner to specify which Certificate Authorities should be allowed to issue certificates for the domain. All CAA-compliant certificate authorities should refuse to issue a certificate unless they are the CA of record for the target site. This helps reduce the threat of a bad guy tricking a Certificate Authority into issuing a phony certificate for your site.
The CAA rule is stored as a DNS resource record of type 257. You can view a domain’s CAA rule using a DNS lookup service:
https://caatest.co.uk/gratipay.com
gratipay should set a CAA record to help prevent misissuance of a certificate for its domains.
https://hackerone.com/reports/129992
Thanks,
Vishal
Report Details
Additional information and metadata
State
Closed
Substate
Informative