SAML Auth with Azure AD

dant123

@julien-f confirmed fixed, thank you! Copy/pasted the Azure AD enterprise app's base64 cert in again and saved to get it working. After updating XO of course.

olivierlambert

Yay! Great news, thanks for the feedback @dant123 !

Mathieu

@dant123
Old topic but thanks a lot for your first post, it was quite helpful for me to setup authentification with Microsoft Entra.

I just didn't get immediately that you also need to specify the callback URL in the XO plugin settings, not only in the enterprise application in the Microsoft portal.

My XO is behind a reverse proxy with a Let's Encrypt certificate, but it is also working with a self-signed certificate and a local DNS record.

@olivierlambert Might be worth an addendum in the official documentation with specific screenshots for Microsoft Entra?

olivierlambert

Sure, happy to have a PR on our doc!

Mathieu

Hello,

Has the saml-auth plugin updated recently ?

Using XOCE, commit c0065, it was working fine. Updating today to latest release, SAML authentication (Microsoft Entra ID), is not working anymore, I land on a page with a
'Internal server error' message.

Thanks,

olivierlambert

Hi,

Yes it was. You need to be sure that your SAML provider used the signed SAML assertion.

Examples in Keycloak then Azure respectively:

nathanael-h

@Mathieu yes indeed, I worked on this with @pierrebrunet PR https://github.com/vatesfr/xen-orchestra/pull/9042
Do you have any logs in xo-server service?

pierrebrunet289 opened this pull request in vatesfr/xen-orchestra

closed chore: update packages #9042

pierrebrunet

@Mathieu Hi, you need to be sure to have signed assertion and signed response because only one won't be enough.

We have updated the doc when you saw the impact. Sorry for the inconvenience:
https://github.com/vatesfr/xen-orchestra/pull/9084/files#diff-6319d6b750c3bdbca61a9d9a1577a8aa4fa3a8a37764b91aef4672f69403baa4R221

pierrebrunet289 opened this pull request in vatesfr/xen-orchestra

closed chore: update doc for SAML due to breaking changes in config #9084

Mathieu

@pierrebrunet

Hello,

I've updated the cert with signed assertion and response

I also tried with a brand new certificate.

Unfortunately, login is still failing.

From xo-server:

Oct 09 08:11:17 xo-ce xo-server[272092]: Error: SAML assertion audience mismatch. Expected: 1671ff50-10e1-4a02-a0c5-4ed298898281 Received: https://XO_DNS_RECORD/
Oct 09 08:11:17 xo-ce xo-server[272092]:     at /opt/xo/xo-builds/xen-orchestra-202510090759/node_modules/@node-saml/node-saml/src/saml.ts:1264:18
Oct 09 08:11:17 xo-ce xo-server[272092]:     at Array.map (<anonymous>)
Oct 09 08:11:17 xo-ce xo-server[272092]:     at SAML.checkAudienceValidityError (/opt/xo/xo-builds/xen-orchestra-202510090759/node_modules/@node-saml/node-saml/src/saml.ts:1259:8)
Oct 09 08:11:17 xo-ce xo-server[272092]:     at SAML.processValidlySignedAssertionAsync (/opt/xo/xo-builds/xen-orchestra-202510090759/node_modules/@node-saml/node-saml/src/saml.ts:1151:32)
Oct 09 08:11:17 xo-ce xo-server[272092]:     at SAML.validatePostResponseAsync (/opt/xo/xo-builds/xen-orchestra-202510090759/node_modules/@node-saml/node-saml/src/saml.ts:808:16)

And here is the plug-in configuration:

I'm not expert at all in SAML, sorry not being able to debug deeper.

pierrebrunet

@Mathieu Hello, can you show us your plugin configuration (without the certificate for security purpose) please?

Edit: thank you!

Mathieu

@pierrebrunet Just posted it above

pierrebrunet

@Mathieu Hi, do you use XO from source or do you have an XOA license? Just to know how to help you more confortably

Mathieu

@pierrebrunet
XO from source, commit 1ee07 from today.

pierrebrunet

@Mathieu Thanks to your help, we are deploying a patch with config update and control over document and assertion signatures
https://github.com/vatesfr/xen-orchestra/pull/9093

pierrebrunet289 opened this pull request in vatesfr/xen-orchestra

closed fix(plugin/auth-saml): add default config in SAML #9093

pierrebrunet

@Mathieu Hi,
We merged the PR linked above with new options. If you have time, can you confirm it is working for you?
It will fix the audience error and let you choose if you want to sign responses and assertions.

probain

@pierrebrunet
I'm jumping in here as well. Reporting that the PR fixes it for Google Workspace as well!
However, the checkbox in GW is called "Signed response".
No further adjustments of the plugin itself was needed.

pierrebrunet

@probain Hi,
Great!! Can you confirm the checkbox is in the Service Provider Details window? It is to enhance the doc part about SAML.

probain

@pierrebrunet
For Google Workspace:
Yes it is in the "Service Provider details"-section: See screenshot for example

Edit: Removed doubled screenshot

pierrebrunet

@probain Thank you!

Mathieu

@pierrebrunet
Hello Pierre,

Sorry for that late response, but yes, latest version is working fine and has solved the issue.

Thanks for the fix.