How to Find Unused AWS IAM Credentials
To increase the security of your AWS account, remove IAM user credentials (that is, passwords and access keys) that are not needed. For example, when users leave your organization or no longer need AWS access.
info
This security check is part of the CIS Amazon Web Services Benchmarks and is rated severity medium.
Prerequisites
This guide assumes that you have already installed and configured Fix Inventory to collect your AWS resources.
Directions
-
Execute the following
search
command in Fix Inventory Shell:> search is(aws_iam_user) and password_last_used<-45d
kind=aws_iam_access_key, ..., region=fixinventory-poweruser
kind=aws_iam_access_key, ..., account=poweruser-team -
Pipe the
search
command into thedump
command:> search is(aws_iam_user) and password_last_used<-45d | dump
reported:
id: /aws/iam/123
name: some-name
ctime: '2022-12-05T22:53:14Z'
kind: aws_iam_access_key
age: 2mo28dThe command output will list the details of all non-compliant
aws_iam_access_key
resources.
Remediation
- From the IAM console: generate credential report.
- Disable not required keys.
note
Please refer to the AWS IAM documentation for details.