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Ensure S3 bucket access logging is enabled on the CloudTrail S3 bucket

S3 Bucket Access Logging generates a log that contains access records for each request made to your S3 bucket. An access log record contains details about the request, such as the request type, the resources specified in the request worked, and the time and date the request was processed. It is recommended that bucket access logging be enabled on the CloudTrail S3 bucket.

Category

Controls

Low

Applies to

AWS

Coverage

null controls, 1 queries

Asset types

1 covered

Overview

S3 Bucket Access Logging generates a log that contains access records for each request made to your S3 bucket. An access log record contains details about the request, such as the request type, the resources specified in the request worked, and the time and date the request was processed. It is recommended that bucket access logging be enabled on the CloudTrail S3 bucket.

Rationale

By enabling S3 bucket logging on target S3 buckets, it is possible to capture all events which may affect objects within an target buckets. Configuring logs to be placed in a separate bucket allows access to log information which can be useful in security and incident response workflows.

Remediation guidance

Perform the following to enable S3 bucket logging:

Via the Management Console

  1. Sign in to the AWS Management Console and open the S3 console at https://console.aws.amazon.com/s3.
  2. Under All Buckets click on the target S3 bucket
  3. Click on Properties in the top right of the console
  4. Under Bucket: <s3_bucket_for_cloudtrail> click on Logging
  5. Configure bucket logging
  • Click on Enabled checkbox
  • Select Target Bucket from list
  • Enter a Target Prefix
  1. Click Save

**Default Value: **

Logging is disabled.

References

  1. CCE-78918-0
  2. CIS CSC v6.0 #14.6

Multiple Remediation Paths

AWS

SERVICE-WIDE (RECOMMENDED when many resources are affected): Deploy centralized guardrails and remediation using AWS Config Conformance Packs and (if applicable) AWS Organizations SCPs.

aws configservice put-organization-conformance-pack --organization-conformance-pack-name <pack-name> --template-s3-uri s3://<bucket>/<template>.yaml

ASSET-LEVEL: Apply the resource-specific remediation steps above to only the affected assets.

PREVENTIVE: Add CI/CD policy checks (CloudFormation/Terraform validation) before deployment to prevent recurrence.

References for Service-Wide Patterns

  • AWS Config Conformance Packs: https://docs.aws.amazon.com/config/latest/developerguide/conformance-packs.html
  • AWS Organizations SCP examples: https://docs.aws.amazon.com/organizations/latest/userguide/orgs_manage_policies_scps_examples.html

Operational Rollout Workflow

Use this sequence to reduce risk and avoid repeated drift.

1. Contain at Service-Wide Scope First (Recommended)

  • AWS: deploy/adjust organization conformance packs and policy guardrails.
aws configservice put-organization-conformance-pack --organization-conformance-pack-name <pack-name> --template-s3-uri s3://<bucket>/<template>.yaml

2. Remediate Existing Affected Assets

  • Execute the control-specific Console/CLI steps documented above for each flagged resource.
  • Prioritize internet-exposed and production assets first.

3. Validate and Prevent Recurrence

  • Re-scan after each remediation batch.
  • Track exceptions with owner and expiry date.
  • Add preventive checks in IaC/CI pipelines.

Query logic

These are the stored checks tied to this control.

S3 bucket access logging is enabled on the CloudTrail S3 bucket

Connectors

AWS

Covered asset types

Bucket

Expected check: eq []

{buckets(where:{trails_NOT: null, loggingEnabled:false}){...AssetFragment}}
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