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CloudTrail trail is not configured to log data events for S3 buckets Affecting CloudTrail service in AWS

Severity

0.0
medium
0
10
    Severity Framework
    Snyk CCSS
    Rule category
    Logging / Configuration

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  • Snyk ID SNYK-CC-00210
  • credit Snyk Research Team
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Description

Data events provide visibility into the resource operations performed on or within a resource, including S3 object-level API activity. By default, trails do not log data events. Note that data events are often high-volume activities.

How to fix?

Set the event_selector.data_resource.type attribute to AWS::S3::Object, and event_selector.data_resource.values to arn:aws:s3:::<bucket name>/.

Example Configuration

resource "aws_cloudtrail" "valid_trail" {
  name = "valid_trail"
  s3_bucket_name = "${aws_s3_bucket.ct_bucket.id}"

  event_selector {
    data_resource {
      type = "AWS::S3::Object"
      values = ["${aws_s3_bucket.important_bucket.arn}/"]
    }
  }
}