Andrea Cosentino created CAMEL-24448:
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Summary: camel-keycloak - introspection issuer validation is
skipped when the iss claim is absent
Key: CAMEL-24448
URL: https://issues.apache.org/jira/browse/CAMEL-24448
Project: Camel
Issue Type: Bug
Components: camel-keycloak
Reporter: Andrea Cosentino
Assignee: Andrea Cosentino
Fix For: 4.23.0
{{KeycloakSecurityProcessor.validateIssuerFromIntrospection()}} logs a WARN and
returns successfully when the introspection response carries no {{iss}} claim,
so the configured issuer is not checked at all in that case.
The audience check right next to it was deliberately made fail-closed, with a
Javadoc explaining why, so the asymmetry reads as an oversight rather than a
decision.
{{iss}} is optional in RFC 7662. Vanilla Keycloak includes it and only accepts
its own realm's tokens, which bounds this - but it matters when {{serverUrl}}
fronts a broker or gateway, or a minimal RFC 7662 implementation that omits the
claim.
Proposal: treat a missing {{iss}} the same way the audience check treats a
missing {{aud}} - fail closed - and make the behaviour consistent between the
two validators.
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