stash-okta - Retrieve AWS credentials from Okta

Authenticates a user against Okta and then uses the resulting SAML assertion to retrieve temporary STS credentials from AWS.

This project is largely inspired by https://github.com/nimbusscale/okta_aws_login, but instead uses a purely API-driven approach, instead of parsing HTML during the authentication phase.

Parsing the HTML is still required to get the SAML assertion, after authentication is complete. However, since we only need to look for the SAML assertion in a single, predictable tag, <input name="SAMLResponse"..., the results are a lot more stable across any changes that Okta may make to their interface.

Installation

1. pip install stash-okta
2. Configure stash-okta via the ~/.okta-aws file with the following parameters:

[default]
base-url = <your_okta_org>.okta.com 

## The remaining parameters are optional.
## You will be prompted for them, if they're not included here.
username = <your_okta_username> # if you add the entry please include the username
password = <your_okta_password> # Only save your password if you know what you are doing!
factor = <your_preferred_mfa_factor> # Current choices are: GOOGLE or OKTA
role = <your_preferred_okta_role> # AWS role name (match one of the options prompted for by "Please select the AWS role" when this parameter is not specified
duration = <number_of_seconds_till_token_expires> # the default value 43200

Supported Features

• Tenant wide MFA support
• Okta Verify Play Store | App Store
• Okta Verify Push Support
• Google Authenticator Play Store | App Store

Unsupported Features

• Per application MFA support

Usage

stash-okta --profile <aws_profile> <awscli action> <awscli arguments>

• Follow the prompts to enter MFA information (if required) and choose your AWS app and IAM role.
• Subsequent executions will first check if the STS credentials are still valid and skip Okta authentication if so.
• Multiple Okta profiles are supported, but if none are specified, then default will be used.

Example

stash-okta --profile my-aws-account iam list-users

If no awscli commands are provided, then okta-awscli will simply output STS credentials to your credentials file, or console, depending on how --profile is set.

Optional flags:

• --profile Sets your temporary credentials to a profile in .aws/credentials. If omitted, credentials will output to console.
• --force Ignores result of STS credentials validation and gets new credentials from AWS. Used in conjunction with --profile.
• --verbose More verbose output.
• --debug Very verbose output. Useful for debugging.
• --cache Cache the acquired credentials to ~/.okta-credentials.cache (only if --profile is unspecified)
• --okta-profile Use a Okta profile, other than default in .okta-aws. Useful for multiple Okta tenants.
• --token or -t Pass in the TOTP token from your authenticator
• --duration Pass in the number of seconds you would like for the token to be valid (default is 43200)