certbot-dns-route53-custom 0.1.1

Route53 DNS Authenticator plugin for Certbot

certbot-dns-route53-custom

This is a custom version of the official certbot-dns-route53 plugin, with the addition of the --dns-route53-custom-zone-id option to explicitly specify the Hosted Zone to use.

The original version performs a list_hosted_zones to discover all Hosted Zones in your AWS account and selects the one that matches the target domain. This means the plugin requires route53:ListHostedZones permissions which can't be restricted to a specific subdomain/hosted zone.

By specifying an explicit zone id, we skip the list_hosted_zones call and instead simply get_hosted_zone to verify that the provided Hosted Zone ID is valid and compatible with the target domain.

This allows for a more restrictive set of permissions compared to the official version.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "route53:GetChange",
            "Resource": "*"
        },
        {
            "Effect": "Allow",
            "Action": "route53:GetHostedZone",
            "Resource": "arn:aws:route53:::hostedzone/YOURHOSTEDZONEID"
        },
        {
            "Sid": "VisualEditor2",
            "Effect": "Allow",
            "Action": "route53:ChangeResourceRecordSets",
            "Resource": "arn:aws:route53:::hostedzone/YOURHOSTEDZONEID",
            "Condition": {
                "ForAllValues:StringEquals": {
                    "route53:ChangeResourceRecordSetsNormalizedRecordNames": [
                        "_acme-challenge.example.com",
                        "_acme-challenge.subdomain.domain.com"
                    ]
                }
            }
        }
    ]
}