Prevent the usage of IMDSv1

aws-scp-ec2-imdsv1.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Deny",
      "Action": "*",
      "Resource": "*",
      "Condition": {
        "NumericLessThan": {
          "ec2:RoleDelivery": "2.0"
        }
      }
    },
    {
      "Effect": "Deny",
      "Action": "ec2:RunInstances",
      "Resource": "arn:aws:ec2:*:*:instance/*",
      "Condition": {
        "StringNotEquals": {
          "ec2:MetadataHttpTokens": "required"
        }
      }
    },
    {
      "Effect": "Deny",
      "Action": "ec2:ModifyInstanceMetadataOptions",
      "Resource": "*"
    },
    {
      "Effect": "Deny",
      "Action": "ec2:RunInstances",
      "Resource": "arn:aws:ec2:*:*:instance/*",
      "Condition": {
        "NumericGreaterThan": {
          "ec2:MetadataHttpPutResponseHopLimit": "1"
        }
      }
    }
  ]
}