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Knowledge Document: SSC - SSO with Keycloak is failing

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Environment

Fortify Software Security Center (SSC) 24.2
Keycloak

 

Situation

When configuring SSO in SSC with Keycloak, the SSO authentication is failing.  Looking at the Keycloak logs, the following warning can be found:

WARN  [org.keycloak.events] (executor-thread-4386) type="LOGIN_ERROR", realmId="realm", realmName="realm", clientId="null", userId="null", ipAddress="###.##.###.###", error="client_not_found", reason="Cannot_match_source_hash"

 

Cause

This was caused by the Client ID setting on the Keycloak side not matching the SP entity ID setting of the SSO configuration in SSC.

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