[JIRA] (JOIDC-84) OIDC SSO happens even with different ACR

[Simone Avogadro (Jira)]

Simone Avogadro ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A60a84ee1-4961-471b-99d8-f67c05e24403 ) *created* an issue

IdP Plugin - OIDC OP ( https://shibboleth.atlassian.net/browse/JOIDC?atlOrigin=eyJpIjoiMjVjMDcyZDBmZTY1NDkwNjg3OTFkYjU2OTk0OTY0MDEiLCJwIjoiaiJ9 ) / Bug ( https://shibboleth.atlassian.net/browse/JOIDC-84?atlOrigin=eyJpIjoiMjVjMDcyZDBmZTY1NDkwNjg3OTFkYjU2OTk0OTY0MDEiLCJwIjoiaiJ9 ) JOIDC-84 ( https://shibboleth.atlassian.net/browse/JOIDC-84?atlOrigin=eyJpIjoiMjVjMDcyZDBmZTY1NDkwNjg3OTFkYjU2OTk0OTY0MDEiLCJwIjoiaiJ9 ) OIDC SSO happens even with different ACR ( https://shibboleth.atlassian.net/browse/JOIDC-84?atlOrigin=eyJpIjoiMjVjMDcyZDBmZTY1NDkwNjg3OTFkYjU2OTk0OTY0MDEiLCJwIjoiaiJ9 )

Issue Type: Bug Assignee: Henri Mikkonen ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1614c4a5-c89e-4edc-9421-990bd6ea85fd ) Components: Authorization Endpoint Created: 18/Mar/22 10:23 AM Priority: Trivial Reporter: Simone Avogadro ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A60a84ee1-4961-471b-99d8-f67c05e24403 )

When the IDP session is active (usually idp.session.enabled = true within idp.properties) the OIDC OP seems to provide SSO to the RP even if the RP is trying to escalete the security level by passing in a more restrictive ACR

Esemple steps:

* RP1 initiates login with ACR=LOA1
* OP

* authenticates the user with username+pwd
* asks for attribute release
* redirects user to RP1

* after some time (minutes) RP1 initiated another login, this time with ACR=LOA2
* OP

* BUG: does NOT ask for authentication
* asks for attribute release etc….

to me this seems a bug since the RP is asking for a different ACR which might imply different authentication mechanism

disabling the IDP session will in turn resolve the issue

( https://shibboleth.atlassian.net/browse/JOIDC-84#add-comment?atlOrigin=eyJpIjoiMjVjMDcyZDBmZTY1NDkwNjg3OTFkYjU2OTk0OTY0MDEiLCJwIjoiaiJ9 ) Add Comment ( https://shibboleth.atlassian.net/browse/JOIDC-84#add-comment?atlOrigin=eyJpIjoiMjVjMDcyZDBmZTY1NDkwNjg3OTFkYjU2OTk0OTY0MDEiLCJwIjoiaiJ9 )

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