Ensure IAM Policy Should Not Grant Full Access to Service - Rule

Rule Description

Troubleshooting Steps

2. 1.
   Start by reviewing the existing IAM policies for the AWS account or organization.
4. 2.
   Identify any policies that grant full access to any service.
6. 3.
   Verify if these policies are associated with any user, group, or role.
8. 4.
   Understand the rationale behind granting full access and assess if it is necessary.
10. 5.
    If determined unnecessary, proceed with remediation steps.

Necessary Codes

Remediation Steps

Step 1: Identify the Existing IAM Policies

2. 1.
   Login to the AWS Management Console.
4. 2.
   Navigate to the IAM service.
6. 3.
   In the left navigation pane, click on "Policies" to view the list of existing policies.

Step 2: Examine Policies for Full Access Grants

2. 1.
   Review each policy in the list and identify any policies that grant full access to any service.
4. 2.
   Pay particular attention to policies associated with users, groups, or roles that have potentially sensitive capabilities.

Step 3: Understand the Rationale

2. 1.
   Engage with the stakeholders, policy creators, or account owners to understand why full access permissions were initially granted.
4. 2.
   Assess if these permissions are truly required for the intended purpose or if they can be restricted further.

Step 4: Update the IAM Policies

2. 1.
   Select the policy that grants full access to the service.
4. 2.
   Click on "Edit policy" to modify its contents.
6. 3.
   Carefully review the policy document and identify the statements granting full access.
8. 4.
   Replace or modify the statements to limit the permissions strictly to the necessary actions and resources.
10. 5.
    Ensure the policy aligns with the least privilege principle, granting only the minimum required permissions.
12. 6.
    Save the changes after modifying the policy.

Step 5: Test and Validate the Modified Policy

2. 1.
   Once the policy is updated, it is vital to test the changes before enforcing them.
4. 2.
   Create a test user, group, or role and attach the modified policy to it.
6. 3.
   Validate that the permissions granted by the policy are still sufficient for the intended tasks.
8. 4.
   Conduct thorough testing to ensure the modified policy does not break any existing functionality or workflows.

Step 6: Apply the Modified Policy

2. 1.
   Once validated, remove the test user, group, or role created for testing purposes.
4. 2.
   Associate the modified policy with the appropriate user, group, or role required for regular operations.

Conclusion