Auth0 SAML Implementation
This article contains Auth0-specific help for configuring Login with SSO via SAML 2.0. For help configuring login with SSO for another IdP, refer to SAML 2.0 Configuration.
Configuration involves working simultaneously within the Bitwarden web vault and the Auth0 Portal. As you proceed, we recommend having both readily available and completing steps in the order they are documented.
Already an SSO expert? Skip the instructions in this article and download screenshots of sample configurations to compare against your own.
Navigate to your organization's Settings → Single sign-on screen:
If you haven't already, create a unique SSO identifier for your organization and select SAML from the the Type dropdown. Keep this screen open for easy reference.
You can turn off the Set a unique SP entity ID option at this stage if you wish. Doing so will remove your organization ID from your SP entity ID value, however in almost all cases it is recommended to leave this option on.
In the Auth0 Portal, use the Applications menu to create a Regular Web Application:
Click the Settings tab and configure the following information, some of which you will need to retrieve from the Bitwarden Single Sign-On screen:
In the Advanced Settings → Grant Types section, ensure that the following Grant Types are selected (they may be pre-selected):
In the Advanced Settings → Certificates section, copy or download up your signing certificate. You won't need to do anything with it just yet, but you will need to reference it later.
You don't need to edit anything in the Advanced Settings → Endpoints section, but you will need the SAML endpoints to reference later.
In smaller windows, the Endpoints tab can disappear behind the edge of the browser. If you're having trouble finding it, click the Certificates tab and hit the Right Arrow key (→).
Create rules to customize the SAML response behavior of your application. While Auth0 provides a number of options, this section will focus on only those that map to specifically to Bitwarden options. To create a custom SAML configuration ruleset, use the Auth Pipeline → Rules menu to Create Rules:
You may configure any of the following:
Implement these rules using a Script like the one below. For help, refer to Auth0's Documentation.
At this point, you have configured everything you need within the context of the Auth0 Portal. Return to the Bitwarden web vault to complete configuration.
The Single Sign-On screen separates configuration into two sections:
SAML Service Provider Configuration will determine the format of SAML requests.
SAML Identity Provider Configuration will determine the format to expect for SAML responses.
Unless you have configured custom rules, your service provider configuration will already be complete. If you configured custom rules or want to make further changes to your implementation, edit the relevant fields:
When you are done with the service provider configuration, Save your work.
Identity provider configuration will often require you to refer back to the Auth0 Portal to retrieve application values:
When completing the X509 certificate, take note of the expiration date. Certificates will have to be renewed in order to prevent any disruptions in service to SSO end users. If a certificate has expired, Admin and Owner accounts will always be able to log in with email address and master password.
When you are done with the identity provider configuration, Save your work.
You can require users to log in with SSO by activating the single sign-on authentication policy. Please note, this will require activating the single organization policy as well. Learn more.
Once your configuration is complete, test it by navigating to https://vault.bitwarden.com, entering your email address, selecting Continue, and selecting the Enterprise Single-On button:
Enter the configured organization identifier and select Log In. If your implementation is successfully configured, you will be redirected to the Auth0 login screen:
After you authenticate with your Auth0 credentials, enter your Bitwarden master password to decrypt your vault!
Bitwarden does not support unsolicited responses, so initiating login from your IdP will result in an error. The SSO login flow must be initiated from Bitwarden.