Ensure IAM Policy Should Not Grant Full Access to Service Rule
This rule ensures that IAM policy does not grant full access to a particular service.
| Rule | Ensure IAM policy should not grant full access to service |
| Framework | Federal Financial Institutions Examination Council (FFIEC) |
| Severity | ✔ Critical |
Rule Description
The purpose of this rule is to prevent the IAM policy from granting full access to a service for the Federal Financial Institutions Examination Council (FFIEC). The FFIEC is a regulatory body that oversees financial institutions in the United States. Granting full access to any service for FFIEC could potentially expose sensitive information and increase the risk of unauthorized access.
Troubleshooting Steps
If the IAM policy is found to grant full access to a service for FFIEC, follow these troubleshooting steps to remediate the issue:
- 1.
Review the current IAM policy: First, review the IAM policy in question to ensure that it indeed grants full access to a service for FFIEC. Pay attention to the permissions and actions allowed for FFIEC.
- 2.
Check policy inheritance: Check if the IAM policy is inherited by any other users, groups, or roles. Inherited policies could potentially grant unintentional access to FFIEC.
- 3.
Identify policy conflicts: If there are multiple policies applied to the same entity (user, group, or role), check for any conflicts between permissions. Conflicting policies might override and grant full access to FFIEC.
- 4.
Review policy conditions: Verify if there are any conditions in the policy that might inadvertently allow full access to FFIEC based on certain circumstances. Conditions can be specified based on factors like IP address, time of day, or other conditions.
- 5.
Audit IAM policy changes: Analyze any recent changes made to the IAM policy. If unauthorized changes were made, this could be the root cause of the issue.
Remediation Steps
To remediate the IAM policy granting full access to a service for FFIEC, follow these step-by-step instructions:
- 1.
Identify the IAM policy in question: Determine the exact IAM policy that provides full access to a service for FFIEC. Take note of the policy name.
- 2.
Access the AWS Management Console: Log in to the AWS Management Console with administrative credentials.
- 3.
Navigate to IAM: Go to the IAM service within the AWS Management Console.
- 4.
Locate the policy: Using the left-side navigation menu, select "Policies" and search for the policy identified in step 1.
- 5.
Edit the policy: Select the policy and click on the "Edit policy" button.
- 6.
Review policy permissions: Review the permissions granted and ensure that there are no statements allowing full access to a service for FFIEC.
- 7.
Remove or modify permissions: To remove permissions, identify the specific statement granting full access to FFIEC and delete it. Alternatively, modify the permissions to restrict access to only necessary actions and resources.
- 8.
Save the changes: After modifying the policy, save the changes by clicking on the "Save changes" button.
- 9.
Validate the policy: Double-check the updated policy to ensure that it no longer grants full access to a service for FFIEC.
- 10.
Audit policy changes: Consider enabling AWS CloudTrail to log IAM policy changes for future auditing and monitoring purposes.
- 11.
Communicate changes: If this IAM policy was applied to any users, groups, or roles, communicate the changes made to the affected entities to ensure they are aware of the updated permissions.
- 12.
Test the changes: Conduct thorough testing to ensure that the modified IAM policy does not cause any unintended denial of access or negative impact on system functionality.
Following these steps will help ensure that the IAM policy no longer grants full access to a service for FFIEC and reduces the risk of unauthorized access to sensitive information.