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EC2 Transit Gateway Automatically Accept VPC Attachment Requests

Overview​

This check verifies if EC2 transit gateways automatically accept shared VPC attachments, failing if they do.

Enabling AutoAcceptSharedAttachments allows automatic approval of cross-account VPC attachment requests, compromising security best practices. To uphold proper authorization and authentication, it is recommended to disable this feature, ensuring only authorized VPC attachment requests are accepted.

Vendor​

AWS

Cloud Service​

EC2

EC2.23

Severity​

4

Item Types​

AWS::EC2::TransitGateway