SAML Single Sign On (SSO) into Bitbucket using ADFS

Bitbucket SAML app gives the ability to enable SAML Single Sign On for Bitbucket Software. Bitbucket Software is compatible with all SAML Identity Providers. Here we will go through a guide to configure SSO between Bitbucket and ADFS. By the end of this guide, ADFS users should be able to login and register to Bitbucket Software.

Pre-requisites

To configure ADFS integration with Bitbucket SAML Single Sign On you need the following items:

  • Bitbucket should be installed and configured.
  • Bitbucket Server is https enabled.
  • Admin credentials are set up in Bitbucket.
  • Valid Bitbucket Server and Data center Licence.

Download And Installation

  • Log into your Bitbucket instance as an admin.
  • Navigate to the settings menu and Click Manage Apps.
  • Click Find new apps or Find new add-ons from the left-hand side of the page.
  • Locate Bitbucket SAML Single Sign On (SSO) via search.
  • Click Try free to begin a new trial or Buy now to purchase a license for Bitbucket SAML Single Sign On (SSO).
  • Enter your information and click Generate license when redirected to MyAtlassian.
  • Click Apply license.
Bitbucket saml sso using adfs

Step 1: Setup ADFS as Identity Provider

  • On ADFS, search for ADFS Management application.
  • SAML Single Sign On (SSO) using ADFS Identity Provider, Management Application
  • After opening the AD FS Management, select Relying Party Trust & then click on Add Relying Party Trust.
  • SAML Single Sign On (SSO) using ADFS Identity Provider,Add Relying Party Trust
  • Click the Start button from the Relying Party Trust Wizard pop up. But before that please make sure Claims Aware is selected.
  • SAML Single Sign On (SSO) using ADFS Identity Provider,Claims Aware
  • Select the options for adding a relying party trust.
    • SAML Single Sign On (SSO) using ADFS Identity Provider Using Metadata URL

      • In Select Data Source: Import data about the relying party published online or on the local network option & then add URL in Federation metadata address.
      • SAML Single Sign On (SSO) using ADFS Identity Provider, Import metadata through URL
      • Skip step-5 to step-8 & start configuring from step-9. Navigate to Service Provider Info tab from the plugin for getting SP Meatadata URL.

      SAML Single Sign On (SSO) using ADFS Identity Provider Using Metadata XML file

      • In Select Data Source: Import data about the relying party from a file option & then browse the metadata file.
      • SAML Single Sign On (SSO) using ADFS Identity Provider, Import Metadata through XML file
      • Skip step-5 to step-8 & start configuring from step-9.

      SAML Single Sign On (SSO) using ADFS Identity Provider Using Manual configuration

      • In Select Data Source: Enter Data about the relying party manually & Click on Next.
      • SAML Single Sign On (SSO) using ADFS Identity Provider, Manual configuration of metadata
  • Enter Display Name & Click Next.
  • Upload the certificate & click next. Download the certificate from plugin & use the same certificate to upload on ADFS.
  • Select Enable support for the SAML 2.0 WebSSO protocol & Enter ACS URL from the plugins Service Provider Info Tab. Click Next.
  • SAML Single Sign On (SSO) using ADFS Identity Provider,support for the SAML 2.0 WebSSO protocol
  • Add Entity ID from plugins Service Provider Info Tab as Relying party trust identifier then click Add button & then click Next.
  • SAML Single Sign On (SSO) using ADFS Identity Provider, Relying party trust identifier
  • Also download the Signing certificate from Service Provider Info Tab from the plugin.
  • Select Permit everyone as an Access Control Policy & click on Next.
  • SAML Single Sign On (SSO) using ADFS Identity Provider, Access Control Policy
  • Click the Next button from Ready to Add Trust & click Close.
  • It will show you the list of Relying Party Trusts. Select the respective application & click on Edit Claim Issuance Policy.
  • SAML Single Sign On (SSO) using ADFS Identity Provider, Edit Claim Issuance Policy
  • Click on Add Rule button.
  • SAML Single Sign On (SSO) using ADFS Identity Provider, add rule
  • Select Send LDAP Attributes as Claims & click on Next.
  • SAML Single Sign On (SSO) using ADFS Identity Provider, Send LDAP Attributes as Claims
  • Enter the following details & click on Finish.
  • Claim rule name: Attributes
    Attribute Store: Active Directory
    LDAP Attribute: E-Mail-Addresses
    Outgoing Claim Type: Name ID
    SAML Single Sign On (SSO) using ADFS Identity Provider, Add Transform claim rule wizard
  • Click Apply Ok.
  • Select property of the application & add the certificate downloaded from the add-on.
  • SAML Single Sign On (SSO) using ADFS Identity Provider, Add certificate

Step 2: Setup Bitbucket as Service Provider

Now we will go through the steps to setup Bitbucket as a Service Provider using miniOrange SAML add-on:

Configuring Single IDP

With the information you have been given by your IDP team, you can configure IDP settings in 3 ways:

A. By Metadata URL

  • Click on Import from Metadata in Configure IDP tab
  • Select IDP: Import From Metadata URL.
  • Enter IDP metadata URL: Enter your metadata URL.
  • If your IDP changes certificates at intervals(Eg. Azure AD), you can select Refresh metadata periodically. Select 5 minutes for the best results.
  • Click Import.

SAML Single Sign On (SSO) into Bitbucket Service Provider, Import IDP metadata from URL

B. By Uploading Metadata XML File

  • Click on Import from Metadata in Configure IDP tab.
  • Select IDP: Import from Metadata File
  • Upload metadata file.
  • Click Import.

SAML Single Sign On (SSO into Bitbucket Service Provider, Import IDP Metadata From File

C. Manual Configuration

Go to Configure IDP tab and enter the following details.

  • IDP Entity ID
  • Single Sign On URL
  • Single Logout URL
  • X.509 Certificate
SAML Single Sign On (SSO) into Bitbucket Service Provider, Configure IDP Metadata Manually
Configure New IDP

If you already have one IDP & you are looking to add second IDP then you can do it by performing the following steps.

  • Navigate to Configure IDP tab.
  • Click on Add new IDP.
  • It will present a blank form & you can configure new IDP using steps from Single IdP Setup.
SAML Single Sign On (SSO) into Bitbucket Service Provider, Add Second IDP

Configure multiple IDPs

If you have configured more than two IDPs then it will show you the list of IDP that you have configured with Bitbucket.

Click on Add new IdP button for adding new IDP on Bitbucket. The steps for adding new IDP will remain the same.

SAML Single Sign On (SSO) into Bitbucket Service Provider, Add New IDP
An operation that you can perform with List of IdPs page.

  • Add / delete Identity Provider.
  • Test Connection between Bitbucket & IdP by click on Test button for respective IDP.
  • Edit the IdP configuration by clicking on the Edit button.
  • You can allow an only specific set of users to access Bitbucket by using Domain Mapping.

Single Sign-On with Multiple Identity Provider(IDP)

Select your IdP from the list. It will redirect you to selected IdP login page.

SAML Single Sign On (SSO) into Bitbucket Service Provider, IDP List While Login
    Configure Domain Mapping

  • You can enable domain mapping using Use Domain Mapping option.
  • Once enable it, you need add domain name against each IDP.
  • After enabling Domain Mapping it allows SSO only for those users whose domain matches with the specified one.
SAML Single Sign On (SSO) into Bitbucket Service Provider, Domain Mapping Configuration

    Single Sign-On using Domain mapping

  • Enter the user email address. It will check your domain name with the configured domain if it matches then it will redirect you to the respective Identity Provider login page.
  • SAML Single Sign On (SSO) into Bitbucket Service Provider, Domain Mapping Form for Login
  • This is how the login screen would appear after enabling domain mapping.

Step 3: Setting up Bitbucket user profile attributes

    We will be setting up user profile attributes for Bitbucket. If your users are stored in a directory that is Read Only, please check Disable user Profile Mapping in User Profile tab and follow steps given in Matching a User.

    SAML Single Sign On (SSO) into Bitbucket Service Provider, User Profile Tab

    a. Finding correct attributes
  • Go to Configure IDP tab. Scroll down and click on Test Configuration.
  • You will see all the values returned by your IDP to Bitbucket in a table. If you don't see value for First Name, Last Name, Email or Username, make the required settings in your IDP to return this information.
  • Once you see all the values in Test Configuration, keep the window open and go to User Profile tab.
  • b. Setting profile attributes.
  • In this tab, fill the values by matching the name of the attribute. For instance, if the attribute Name in the Test Configuration window is NameID, enter NameID against Username.
  • Setting up both Username and Email is required if you want to let users register. If you want existing users to the only login, configure the attribute using which you will match the user in Bitbucket.
  • c. Matching a User
    When the user logs into Bitbucket, one of the user's data/attribute coming in from the IDP is used to search the user in Bitbucket. This is used to detect the user in Bitbucket and log in the user to the same account.
  • Go to User Profile tab.
  • Select Username or Email for Login/Search Bitbucket user account by.
  • Enter the attribute name from IDP which corresponds to Username or Email using Finding Correct Attributes.

Step 4: Assigning groups to users

    We will be setting up user group attributes for Bitbucket. If your users are stored in a directory that is Read Only, please check Disable Group Mapping in User Groups tab and skip to setting default group.

    a. Setting default group
  • Select the users' Default Group in the tab User Groups. If no group is mapped, users are added by default to this group.
  • You can enable default groups for All Users or New Users using the option. Select None if you don't want to assign any default group to SSO users for the option Enable Default Groups for.
  • SAML Single Sign On (SSO) into Bitbucket Service Provider, Default groups
    b. Finding Group Attribute
  • Just like we found attribute name for User Profile attributes, we find group attribute.
  • Go to Configure IDP tab. Scroll down and click on Test Configuration.
  • You will see all the values returned by your IDP to Bitbucket in a table. If you don't see value with groups, make the required settings in your IDP to return group names.
  • Once you see all the values in Test Configuration, keep the window open and go to User Groups tab.
  • Enter the Attribute Name of group against Group Attribute.
  • Check Disable Group Mapping option if you don't want to update groups of existing users.

  • c. Group Mapping
    Group Mapping can be done in two ways:
  • Manual group mapping: If the names of groups in Bitbucket are different than the corresponding groups in IDP, then you should use Manual group mapping.
  • On-The-Fly group mapping: If the names of groups in Bitbucket and IDP are same, you should use On-The-Fly group mapping.

  • I. Manual Group Mapping

    • Check Restrict User Creation Based on Group Mapping option if you want new users to be created only if at least one of the user's IDP groups is mapped to a group in the application.
    • For mapping, first select a bitbucket group from the dropdown which lists all groups present in bitbucket and then enter the name of the IDP group to be mapped in the textbox beside.
    • For example, if you want all users in 'dev' group in IDP to be added to stash-user, you will need to select stash-user from the dropdown and enter 'dev' against stash-user.
    • Use '+1' and '+10' buttons to add extra mapping fields.
    • Use '-' button next to each mapping to delete that mapping.
    SAML Single Sign On (SSO) into Bitbucket Service Provider, Manual group mapping
  • II. On-The Fly Group Mapping

    • Check Create New Groups option if you want new groups from IDP to be created if not found in Bitbucket.
    • If the user is part of some group in Bitbucket and that group is not present in the SAML response returned by IDP, then the user will be removed from that group in Bitbucket.
    • If you don't want On-The-Fly group mapping to affect Bitbucket groups which are managed locally then add those groups in Exclude Groups field.
    SAML Single Sign On (SSO) into Bitbucket Service Provider, On the fly group mapping

Step 5: SSO Settings

    The settings in SSO Settings tab define the user experience for Single Sign On.
    a. Sign In Settings
  • Set Enable SSO for Bitbucket Server to allow SSO for Bitbucket users.
  • Set button text for button on login page using Login Button Text.
  • Set redirect URL after login using Relay State. Keep this empty for coming back to the same page user started from.
  • Enable Auto-redirect to IDP if you want to allow users to login only using IDP. Enable backdoor for emergency.
  • SAML Single Sign On (SSO) into Bitbucket Service Provider, Sign In Settings
    b. Custom Login Template
  • Design your own login template that will be used to intitate SSO.
  • SAML Single Sign On (SSO) into Bitbucket Service Provider, Custom Login Settings
    c. Sign Out Settings
  • Set Logout URL or Logout Template to redirect users after logout action.
  • SAML Single Sign On (SSO) into Bitbucket Service Provider, Sign Out Settings
    d. SSO Error Settings
  • Set error template to redirect users to a custom error page instead of login page. Use this if you have Auto-redirect to IDP enabled.
  • SAML Single Sign On (SSO) into Bitbucket Service Provider, SAML Error Message Settings
    e.Advanced Settings
  • Allow Users to Change Password: Disable if you don't want user to chnage their local Bitbucket credential.
  • Remember Me-cookie: If enabled, user stays logged in until user explicitly logs out.
  • You can extend Bitbucket default session timeout using these steps. By default it is set to 30 mins.
  • Validate IDP's SAML Response: Configure time difference(in minute) here In case Bitbucket server time is not in sync with your IDP's time.
  • SAML Single Sign On (SSO) into Bitbucket Service Provider,Advance SAML settings Tab



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