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pythonamazon-web-servicesamazon-cloudtrail

Cloudtrail console resources missing from event record

I need to get all the resources referenced by the action per each AWS event record. I use Python and cloudaux/boto. The documentation states a "resources" field: https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-event-reference-record-contents.html (although it does say it's optional).

In some Cloudtrail events, like Attach Role Policy as in the picture below, I can see the "resources referenced" in the console, but they are missing from the event record and when I fetch it via the API.

Is there any way to get them programmatically? The alternative would be to compute them manually from the request parameters / response, but it's structured differently for each type of event.

enter image description here

Solution

  • The CloudTrail LookupEvents API has resources for each event (where it is available) in the response. You will need to set LookupAttributes in the request body if you want to filter for specific event(s) in the response.

    API reference

    Boto3 reference

    Here is a sample request/response (this was generated using the CLI, but it should be similar with API/boto3):

    aws cloudtrail lookup-events --lookup-attributes AttributeKey=EventName,AttributeValue=AttachRolePolicy

    {
    "Events": [
        {
            "EventId": "aaaa-aaaa-aaa",
            "EventName": "AttachRolePolicy",
            "ReadOnly": "false",
            "AccessKeyId": "AAAAAAAAA",
            "EventTime": "2022-12-12T04:55:30+00:00",
            "EventSource": "iam.amazonaws.com",
            "Username": "aaaa",
            "Resources": [
                {
                    "ResourceType": "AWS::IAM::Policy",
                    "ResourceName": "arn:aws:iam::aws:policy/AutoScalingConsoleReadOnlyAccess"
                },
                {
                    "ResourceType": "AWS::IAM::Role",
                    "ResourceName": "SampleRole"
                }
            ],
            "CloudTrailEvent": "{\"eventVersion\":\"1.08\",\"userIdentity\":{\"type\":\"IAMUser\",\"principalId\":\"AAAAAAAAA\",\"arn\":\"arn:aws:iam::1234567890:user/AAAAAAAAA\",\"accountId\":\"1234567890\",\"accessKeyId\":\"AAAAAAAAA\",\"userName\":\"kaustubh\",\"sessionContext\":{\"sessionIssuer\":{},\"webIdFederationData\":{},\"attributes\":{\"creationDate\":\"2022-12-12T04:52:13Z\",\"mfaAuthenticated\":\"true\"}}},\"eventTime\":\"2022-12-12T04:55:30Z\",\"eventSource\":\"iam.amazonaws.com\",\"eventName\":\"AttachRolePolicy\",\"awsRegion\":\"us-east-1\",\"sourceIPAddress\":\"AWS Internal\",\"userAgent\":\"AWS Internal\",\"requestParameters\":{\"roleName\":\"SampleRole\",\"policyArn\":\"arn:aws:iam::aws:policy/AutoScalingConsoleReadOnlyAccess\"},\"responseElements\":null,\"requestID\":\"aaaa-aaaa-aaa\",\"eventID\":\"aaaa-aaaa-aaa\",\"readOnly\":false,\"eventType\":\"AwsApiCall\",\"managementEvent\":true,\"recipientAccountId\":\"1234567890\",\"eventCategory\":\"Management\",\"sessionCredentialFromConsole\":\"true\"}"
        }
    ]
}