An IAM User with Admin access is a user in AWS Identity and Access Management (IAM) that has been granted administrative privileges within an AWS account. Admin access provides the user with full access to all resources and actions associated with the account, including managing users, groups, policies, and billing. This level of access is highly permissive and can pose a significant security risk if not properly managed. It is important to restrict administrative access to only those users who require it and to ensure that appropriate monitoring and auditing measures are in place to detect any unauthorized activity. Organizations should also consider implementing additional security controls, such as multi-factor authentication (MFA) and privilege escalation workflows, to further enhance the security of their AWS accounts.
If you have identified an IAM User with Admin access, you should take the following remediation steps:
- Review and assess the potential impact: Before making any changes, you should review and assess the potential impact of changing the permissions. Determine if any applications or services depend on the current permissions and whether any data will be affected by the change.
- Remove the Admin policy: Remove the Admin policy from the IAM User. This will immediately revoke the administrative privileges from the user.
- Create a new policy for necessary access: Create a new policy that grants the user only the specific access required for their job function. This policy should be scoped to only the necessary resources and actions required for the user's job function.
- Assign the new policy to the user: Assign the new policy to the user.
- Test the new policy: Once you have assigned the new policy, test it to verify that it grants the appropriate level of access to the necessary resources while also restricting access to non-administrative users.
- Monitor for unauthorized access: Monitor the IAM access logs for any unauthorized access attempts or unusual activity. This will help you to identify any further security issues and to take appropriate action.
- Consider implementing additional security controls: Consider implementing additional security controls, such as multi-factor authentication (MFA), privilege escalation workflows, and regular security audits to further enhance the security of your AWS account.
- Regularly review access permissions: Regularly review the access permissions for IAM resources to ensure that they remain appropriate and up-to-date. This will help to prevent future over-permissive access policies and potential security risks.
Note: Remediation steps provided by Lightlytics are meant to be suggestions and guidelines only. It is crucial to thoroughly verify and test any remediation steps before applying them to production environments. Each organization's infrastructure and security needs may differ, and blindly applying suggested remediation steps without proper testing could potentially cause unforeseen issues or vulnerabilities. Therefore, it is strongly recommended that you validate and customize any remediation steps to meet your organization's specific requirements and ensure that they align with your security policies and best practices.