aws-rotate-key
As a security best practice, AWS recommends that users periodically regenerate their API access keys. This tool simplifies the rotation of access keys defined in your credentials file.
When run, the program will list the current access keys associated with your IAM user, and print the steps it has to perform to rotate them. It will then wait for your confirmation before continuing.
Usage
$ aws-rotate-key --help
Usage of aws-rotate-key:
-d Delete old key without deactivation.
-mfa
Use MFA.
-profile string
The profile to use. (default "default")
-version
Print version number
-y Automatic "yes" to prompts.
Example
$ aws-rotate-key --profile work
Using access key AKIAJMIGD6UPCXCFWVOA from profile "work".
Your user ARN is: arn:aws:iam::123456789012:user/your_username
You have 2 access keys associated with your user:
- AKIAI3KI7UC6BPI4O57A (Inactive, created 2018-11-22 21:47:46 +0000 UTC, last used 2018-11-30 20:35:41 +0000 UTC for service s3 in us-west-2)
- AKIAJMIGD6UPCXCFWVOA (Active, created 2018-11-30 21:55:57 +0000 UTC, last used 2018-12-20 12:14:10 +0000 UTC for service s3 in us-west-2)
You have two access keys, which is the max number of access keys.
Do you want to delete AKIAI3KI7UC6BPI4O57A and create a new key? [yN] y
Deleted access key AKIAI3KI7UC6BPI4O57A.
Created access key AKIAIX46CKYT7E5I3KVQ.
Wrote new key pair to /Users/your_username/.aws/credentials
Deactivated old access key AKIAJMIGD6UPCXCFWVOA.
Please make sure this key is not used elsewhere.
Please note that it may take a minute for your new access key to propagate in the AWS control plane.
Install
You can download binaries from the releases section.
You can also use our Homebrew tap on macOS:
brew install fullscreen/tap/aws-rotate-key
Setup
Make sure your users have permissions to update their own access keys. The following AWS documentation page explains the required permissions: https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_delegate-permissions_examples.html#creds-policies-credentials.
The following IAM policy is enough for aws-rotate-key:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"iam:ListAccessKeys",
"iam:GetAccessKeyLastUsed",
"iam:DeleteAccessKey",
"iam:CreateAccessKey",
"iam:UpdateAccessKey"
],
"Resource": [
"arn:aws:iam::AWS_ACCOUNT_ID:user/${aws:username}"
]
}
]
}
Replace AWS_ACCOUNT_ID
with your AWS account id.
Require MFA
You can require MFA by adding a Condition
clause. Please note that you
have to use the -mfa
option when running the program.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"iam:ListMFADevices"
],
"Resource": [
"arn:aws:iam::AWS_ACCOUNT_ID:user/${aws:username}"
]
},
{
"Effect": "Allow",
"Action": [
"iam:ListAccessKeys",
"iam:GetAccessKeyLastUsed",
"iam:DeleteAccessKey",
"iam:CreateAccessKey",
"iam:UpdateAccessKey"
],
"Resource": [
"arn:aws:iam::AWS_ACCOUNT_ID:user/${aws:username}"
],
"Condition": {
"Bool": {
"aws:MultiFactorAuthPresent": true
}
}
}
]
}
Note that this makes it hard to rotate the key using regular aws-cli commands, as it only supports MFA when assuming roles. You will still be able to use the AWS management console.
Contribute
To download and hack on the source code, run:
$ git clone https://github.com/Fullscreen/aws-rotate-key.git
$ cd aws-rotate-key
$ go build