chore(cloudformation): Only allow IMDSv2 on Gateway instances #2934
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What does this change?
As per https://docs.aws.amazon.com/securityhub/latest/userguide/ec2-controls.html#ec2-8 we should not be allowing access to IMDSv1 anymore.
This resolves 4 HIGH FSBP vulnerabilities.
How to test
Check Cloudwatch metrics for any usage of
MetadataNoToken
, if no usage then it is safe for us to disable IMDSv1.