I am setting up a PowerAutomate flow which will be called from a PowerApp. I would like fetch a JWT token from Azure AD in Power Automate and use that token to authenticate call a REST API, return back the result to PowerApps.
However, I would the JWT token be generated for the user which executes the flow and I dont want to hard-code user credentials in the flow. There would be multiple users executing the flow and each user would have different permissions in my App ( to which the REST call is made) so I want the authentication to the app be done as a named user rather than a service account/generic account
Thank you #lona Varga for your valuable suggestion. Posting your suggestion as an answer to help other community members.
To authenticate your application as a named user, please try the
following:
Create both backend and client application registrations in Azure portal.
After configuring these, create a custom connector by updating your security setting as below:
Authentication type: OAuth 2.0
Identity Provider: Azure Active Directory
Client ID: Client ID for Client App Registration
Client Secret: Client Secret for Client App Registration
Resource URL: Client ID fot Backend App Registration.
Update the redirect url by removing the existing value and add this newly created one, this is same for all connectors and it is :
https://global.consent.azure-apim.net/redirect
For more in detail, please refer below link:
Solved: Re: custom connector secure using Azure Active Dir... - Power Platform Community (microsoft.com)
Related
We are trying to connect a javamail (1.6) client to our office365 mailbox hosted on office365 using OAUTH2 authentication.
No matter what we do, we keep getting A1 NO AUTHENTICATE failed.
We have registered our application with
API Permission
we followed all instructions stated at
https://learn.microsoft.com/en-us/exchange/client-developer/legacy-protocols/how-to-authenticate-an-imap-pop-smtp-application-by-using-oauth
including running the powershell commands to create the principal using the app id and object id, and we granted the app full access to emailbox we want to access.
For authentication we do an HTTP POST as following which generates an access token
This is a client credentials flow with shared secret as explained here
https://learn.microsoft.com/en-us/azure/active-directory/develop/v2-oauth2-client-creds-grant-flow
https://login.microsoftonline.com/{our tenant id}/oauth2/v2.0/token
with
client_id=...
client_secret=...
grant_type=client_credentials
scope=https://outlook.office365.com/.default
our javamail configuration
mail.store.protocol="imap"
mail.imap.host="outlook.office365.com"
mail.imap.port="993"
mail.imap.ssl.enable="true"
mail.imap.starttls.enable="true"
mail.imap.auth="true"
mail.imap.auth.mechanisms="XOAUTH2"
mail.imap.user="<email box>"
then in our java code we connect the store with the access token obtained from the above HTTP POST
store.connect(host, user, oauth2_access_token);
We also tried this powershell script, which returns the same error
https://github.com/DanijelkMSFT/ThisandThat/blob/main/Get-IMAPAccessToken.ps1
I do not believe that problem is specific to JavaMail.
It is extremely difficult to determine if an access token has the correct rights or there is something else that prevents the authentication
What else can we try?
Update 1
If we use the powershell script
https://github.com/DanijelkMSFT/ThisandThat/blob/main/Get-IMAPAccessToken.ps1
passing only the client id and the redirectUri the script prompts me for approval and it succeeds
but if we use clientsecret authorization fails
Update 2
I can successfully use javamail with the access token generated by the powershell script.
Clearly the token created with the clientsecret does not have enough rights to access IMAP or the mailbox
I start to wonder if token requests using client secret do not work because our Azure Active Directory has "security defaults" enabled.
May be MFA is enforced therefore any non-interactive requests are blocked
Update 3
https://jwt.ms allows to decode access tokens
The token created with just the clientid (code grant flow) is very different from the one created with the client_secret (client credentials flow).
In token from "code grant interactive" there is an attribute called "scp" Set of Scopes, which lists scopes regardless of what I have in my client app API permission ????
"scp": "IMAP.AccessAsUser.All Mail.Read Mail.Read.All Mail.Read.Shared Mail.ReadBasic User.Read"
The second token from the client credentials flow, has an attribute "roles", but does not have scopes
"roles": ["IMAP.AccessAsApp"]
RESOLVED!
looking at the access token we noticed that the client credentials flow subject (sub) was an id that we did not setup.
Here is the catch: when creating the service principal using powershell in exchange online, for serviceid you have to use the objectid of the enterprise application.
New-ServicePrincipal -AppId {clientid} -ServiceId {enterprise application objectid} -Organization {tenantid}
When creating an app registration Azure AD, you also create an enterprise application
The application object id is different from enterprise application object id.
The client credentials flow uses the enterprise application object id as the user asking for authorization.
The same for granting access to the mailbox using powershell
Add-MailboxPermission -Identity {email} -User -ServiceId {enterprise application objectid} -AccessRights FullAccess
it is unfortunate that the authentication process is so cumbersome
My two cents on this , if you are still facing authentication failure from javamail trying to connect to mailbox and read emails, First and foremost make sure the application setup in azure active directory has below permissions.
IMAP.AccessAsApp
Mail.Read
Mail.Send (For Sending)
Secondly, Create service principal with the enterprise application id as mentioned in the original post.
Once done check here if your generated token has all the roles you have assigned.
Even if you assigned necessary roles and you can able to connect to mailbox via powershell still you might get AUTHENTICATE failed from javamail because you might be using this property (mail.imap.auth.mechanisms) wrongly , replace mail.imap with mail.imaps and it should solve the problem.
"mail.imaps.auth.mechanisms"="XOAUTH2"
"mail.imap.host"="outlookoffice365.com"
"mail.smtp.port"=993
"mail.store.protocol"="imaps"
session.getStore("imaps")
store.connect(host,port,user,token)
Good luck !!
I have a requirement to integrate azure SSO to the WebApp. My WebApp is built in FastAPI. Currently I implemented it by referring https://pypi.org/project/fastapi_msal/. It's working and giving me logged in user information which I need. But the usecase which i need is little different from this, This link implemented as user should enter clientID & Client Secret. But in my case on button click or on page load user should directly login it should not prompt to add clientID & Secret.
How i can achieve this? I am not getting any proper document WRT FastAPI
For the scope that you can get are identified in the app registration api Permission and NOT "delegated permissions" client credentials flow cannot get delegated permissions flow.
Once you give an application permission, you have to click grant for tenant. If you don't it won't be able to use it. This option specifies the client secret for the confidential client app. This secret (app password) is provided by the application registration portal or provided to Azure AD during app registration with PowerShell AzureAD, PowerShell AzureRM, or Azure CLI.
Read more here for more information on client secret.
Can I define custom scope(s) and have them returned when using the client credential flow in Azure AD?
In my experiment, I configured 2 Azure AD applications, one for a Web API and one for a client (Web API Client A). I added a scope to the Web API but when requesting the access token via the client credential flow, the scope wasn’t returned. 🤔
Also, it only allowed me to request an access token when using .default for a scope, i.e. api://web-api-client-credential-flow/.default.
I ran across this Azure Feedback item: V2.0 Client Credentials Implement Scopes so it appears scopes aren't supported in Azure AD under the client credential flow?
What’s the point in giving my Web API Client A application permissions for that scope if they are not returned? How could the Web API know if the daemon application has that scope to perform the necessary action?
It would seem I would have to use application permissions?
Yes, you have to use application permissions.
Scopes aka delegated permissions only apply when a user is involved in the login process.
They allow you to act on behalf of a user.
Application permissions are sort of roles given to the application itself.
They only apply when doing client credentials authentication, where no user is involved.
You can define application permissions on the app via the Manifest in the app registration.
These can then be assigned to the client application.
When getting the token, you must use .default because you cannot change your app permissions dynamically.
You always get what has been granted already.
In the token the permissions will be in a roles claim.
Can I define custom scope(s) and have them returned when using the client credential flow in Azure AD?
No, but you can define application permission(s) via the manifest (definitely not as nice as the UI for delegated scopes) and have them returned via the client credential flow:
Then you can provide the client app permission:
Now when requesting a token with a scope of api://web-api-client-credential-flow/.default the "scopes" are returned in the roles claim. Sample JWT
Yes, you need to use api://web-api-client-credential-flow/.default for client credential flow.
And the application permissions will be returned in roles instead of scopes.
Background
I have a MVC 5 Web App and hosted in Azure App Service as Web App and secured with Azure AD; Anybody with valid AD credentials can authenticate themselves and view all HTML Content in the Web App;
Objective
I need to give just one of these MVC-View to outside individuals to view. For such we have already created an User in Azure AD which we will be sharing the details with the outside world. Hence, the thrid party will need to write some code to authenticate to our Azure AD and view this HTML content non interactively (Which means without allowing the third party app to prompt to enter user credentials from Azure AD).
What I have thought about
Assume that I am the third Party, I am going to authenticate to Azure AD from a Console/WinForms/HTML
Page and get myself a token; Then I will be using the token, to open
up a Browser to view this page.
Challenges I see
Session Expiration
Session Validity
Putting everything intto a Picture
Please show me some guidence to accomplish the objective.
Hence, the thrid party will need to write some code to authenticate to our Azure AD and view this HTML content non interactively (Which means without allowing the third party app to prompt to enter user credentials from Azure AD).
Per my understanding, you could leverage the OAuth 2.0 Client Credentials Grant Flow by using the client_id and client_secret.
Also, you could use OAuth 2 Resource Owner Password Credentials grant. Note: The resource owner password grant doesn't provide consent and doesn't support MFA either. Detailed tutorial, you could follow here.
Based on the authentication implementation part in your Web App, you could follow the approaches below to implement your scenario:
For using App Service Authentication / Authorization
You do not need to modify any code in your Web App project.
For using Microsoft.Owin.Security.OpenIdConnect middleware
You could use Microsoft.Owin.Security.ActiveDirectory package in your Web App for supporting AAD bearer token authentication, and this middleware need to be configured before the other authentication middlewares as follows:
app.UseWindowsAzureActiveDirectoryBearerAuthentication(
new WindowsAzureActiveDirectoryBearerAuthenticationOptions
{
Audience = "{the-AAD-clientId}",
Tenant = "{TenantId}"
});
//app.UseCookieAuthentication
//app.UseOpenIdConnectAuthentication
For the client (the third Party), they could leverage the above two flows (Client Credentials Grant Flow ,Resource Owner Password Credentials Grant Flow) to retrieve the access token without user interaction. Then they could access the specific view page by using the token as follows:
Get https://{your-app-name}.azurewebsites.net/home/index
Header Authorization:Bearer {the-AAD-accessToken-or-IdToken}
For retrieving the token, you could follow this tutorial for using User Password Credential flow. For Client Credential, you could just construct the ClientCredential instance when invoking AcquireTokenAsync for getting the token.
Additionally, you could create a new AAD application for this scenario or just use the AAD application for your current Web App. Moreover, there may exists risks when exposing the username & password or clientId & ClientSecret to the third Party, I would recommend you expose a new endpoint for generating the token in your Web App backend and return the token to the third party for security consideration.
I am trying come up with a bash script to register an application in Azure AD using the /beta/applications endpoint from Microsoft Graph.
To call /applications, I would need to get an access token.
Is it possible to get an access token for Microsoft Graph using just email address/password (Without a client-id)? I am looking for something like "Resource Owner Password Credentials Grant Flow" mentioned in OAUTH2 spec.
Any other alternative I can look into. I want to write a simple script that would manage application registration and any updates to the application in future.
Yes, there are several means of running a script against the Microsoft Graph API without a user present:
AD supports the resource owner credential grant that you described in your question. This flow doesn't support some new auth features like multifactor auth and you'll have to be very careful about securely storing your credentials.
The other option is to use V2 auth client credential flow. In this case, the tenant admin consents to the application on behalf of the tenant. Afterwards, the application can run without a user present. One benefit of this flow as opposed to the V1 resource owner credential grant is that you pass a client credential which can be revoked and re-generated if needed (rather than dealing with raw user credentials).