AEM and ADFS and external IDP

1
votes

Unfortuantely the built in AEM SAML Utility does not support the HTTP Redirect binding (only post binding). I have to perform SAML authentication to an external IDP which has HTTP redirect for both single sign on and single logout. Because of the AEM limitation I would like to configure ADFS to handle authentication with this external IDP and somehow get AEM to talk to that ADFS (either a federation service, or maybe an RP or claims provider). Does anybody know how this could potentially be achieved? I am assuming I could leverage the SAML utility or the SSO utility/modules in AEM (sling) to connect to ADFS somehow who will be responsbile to relay or proxy the IDP response to AEM. thanks

1
aemsamladfs
In practice I have not seen the HTTP Redirect Binding to work with SAML due to practical limitations of URL length. Having said that I have seen it implemented using custom sling authentication. OOTB AEM SAML does not support it though. – Imran Saeed

1 Answers

0
votes

Using OOTB SAML Authentication Handler there is an option IDP HTTP Redirect, I was able to configure SAML authentication with a redirect to ADFS and then after giving credentials, IDP was redirecting back to AEM with SAML2 response containing all the data, however, that was handled by POST Binding.

EDIT:, OK, I have just noticed that IDP HTTP Redirect option is not present in linked official documentation however on the video in this tutorial you can see it available on AEM 6.1... I do not recollect now if the POST binding is used at the end so that please check first if that might work with this option as I have used that before.

If you would need other solution, the fastest option I see is checking the default implementation of SAML Authentication Handler by decompiling (it can be done following these steps, by at the same time I am only suggesting, not recommending that!) and base on it implementing custom handler adapted to your needs.