Azure users unable to log in when integrated with Confluence Data Center via SSO 2.0
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Note that this knowledge base article was created for the Data Center version of the product. Data Center knowledge base articles for non-Data Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
After following KB How to integrate Confluence Data Center with Azure for SAML 2.0 SSO, Azure users receive a generic "We can't log you in right now" error message when trying to log into Confluence.
Environment
- Azure Active Directory
- SSO for Atlassian Server and Data CenterData Center SSO 2.0 plugin
Diagnosis
For a given user encountering this situation while logging in, the following error appears in the application logs:
2021-12-22 19:01:27,386 ERROR [http-nio-8080-exec-5] [impl.web.filter.ErrorHandlingFilter] logException [UUID: 79a91343-3bf8-4cfb-a562-022612ebe316] Attribute [http://schemas.microsoft.com/ws/2008/06/identity/claims/groups] could not be found
-- referer: https://login.microsoftonline.com/ | url: /plugins/servlet/samlconsumer | traceId: e905ee736246ea42 | userName: anonymous
com.atlassian.plugins.authentication.impl.web.usercontext.impl.jit.JitException: Attribute [http://schemas.microsoft.com/ws/2008/06/identity/claims/groups] could not be found
at com.atlassian.plugins.authentication.impl.web.usercontext.impl.jit.mapping.SamlUserDataFromIdpMapper.mapGroups(SamlUserDataFromIdpMapper.java:56)
at com.atlassian.plugins.authentication.impl.web.usercontext.impl.jit.mapping.SamlUserDataFromIdpMapper.mapUser(SamlUserDataFromIdpMapper.java:28)
at com.atlassian.plugins.authentication.impl.web.saml.SamlConsumerServlet.doPost(SamlConsumerServlet.java:105)Investigate the SAML attributes being sent to Confluence by using a tool such as SAML Chrome Panel. Normally, the SAML reply will contain the following attribute along with a list of groups:
<Attribute Name=\"http://schemas.microsoft.com/ws/2008/06/identity/claims/groups\"><AttributeValue>Instead of this particular attribute, however, you note that the following attribute is present for the user:
<Attribute Name=\"http://schemas.microsoft.com/claims/groups.link\"><AttributeValue>Cause
Based on Microsoft's SAML token claims reference, the groups.link attribute is a Group Overage Indicator indicating that the number of groups associated with the user exceeded a limit of 150.
As a result, this scenario has been documented in the following bug:
SAMLDC-97 - Getting issue details... STATUS
Solution
As a possible workaround, consider adding the user ID to an application only group and reconfiguring each user's group claim to application access only (ie. User.Groups[ApplicationGroup]). Also, ensure that this group has appropriate global permissions within the Atlassian application.