Ensure Rule for IAM Policy
This rule ensures AWS IAM policy does not allow assume role permission across all services.
| Rule | Ensure AWS IAM policy does not allow assume role permission across all services |
| Framework | CloudDefense.AI Security |
| Severity | ✔ High |
Rule: Restrict Assume Role Permission for CloudDefense IAM Policy
Description:
This rule ensures that the AWS Identity and Access Management (IAM) policy for the CloudDefense role does not have the permission to assume a role across all services. By following this rule, you minimize the potential risk of unauthorized access to resources and maintain the security of your AWS environment.
Troubleshooting Steps:
If any issues arise while configuring this rule, follow these troubleshooting steps:
- 1.
Verify IAM Policy: Double-check that the IAM policy attached to the CloudDefense role does not grant the
permission for all services. Check for the wildcard (sts:AssumeRole
) used in the*
statement, which implies all services.Resource - 2.
Review Policy Attachments: Ensure that the CloudDefense role is not unintentionally inheriting permissions from other IAM policies associated with it. Remove any unnecessary policies or ensure they only provide the required permissions.
- 3.
Check for Misconfigured Policies: Examine other IAM policies within your AWS account to ensure they do not explicitly grant the
permission to the CloudDefense role across all services.sts:AssumeRole
Necessary Codes:
If you identify a policy misconfiguration and need to make changes, you can use the AWS Command-Line Interface (CLI) or the AWS Management Console to modify the IAM policy.
Remediation Steps:
Follow these steps to remediate the rule violation:
- 1.
Sign in to the AWS Management Console with appropriate permissions.
- 2.
Open the IAM service.
- 3.
In the navigation pane, click on "Roles".
- 4.
Search for and click on the CloudDefense role.
- 5.
On the "Permissions" tab, locate the IAM policy attached to the role.
- 6.
Review the policy document, ensuring it does not contain the
permission for all services (wildcard insts:AssumeRole
statement).Resource - 7.
If any misconfigurations are found, click on the "Edit policy" button.
- 8.
Modify the policy document and remove the unnecessary
permission across all services. Replace the wildcard (sts:AssumeRole
) with the specific services that CloudDefense needs to assume a role for, if required.* - 9.
Review the changes and click on "Apply policy".
Additional Considerations:
- 1.
Be cautious while modifying IAM policies as any mistakes can lead to unexpected access issues or security vulnerabilities.
- 2.
Regularly review and audit IAM policies to ensure they align with the organization's security requirements.
- 3.
Implement a least privilege access control model, granting only the necessary permissions to the CloudDefense role.
- 4.
Leverage AWS IAM Access Analyzer to identify potential resource-based policy issues and gain deeper visibility into your access controls.