Hello

I have created a security question Authenticator according Keycloak documentation by implementing org.keycloak.authentication.Authenticator interface,

with 2 configurable attributes.

After adding the Authenticator execution into Authentication flow, I can set initial configuration values for the attributes in admin console (as realm admin user).

For a first time it’s everything OK and the values are set and used during authentication.

But next time, when I try to change the attributes values, I get an ForbiddenException:

14:49:48,783 ERROR [org.jboss.resteasy.resteasy_jaxrs.i18n] (default task-12) RESTEASY002005: Failed executing GET /admin/realms/master/authentication

/config-description/security-question-authenticator: org.keycloak.services.ForbiddenException

        at org.keycloak.services.resources.admin.RealmAuth.requireView(RealmAuth.java:70)

        at org.keycloak.services.resources.admin.AuthenticationManagementResource.getAuthenticatorConfigDescription(AuthenticationManagementResource.j

ava:853)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

        at java.lang.reflect.Method.invoke(Method.java:497)

        at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:139)

        at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)

        at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:107)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:133)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:107)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:133)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101)

        at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:395)

        at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:202)

        at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:221)

        at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)

        at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

        at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)

        at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)

        at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:78)

        at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)

        at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)

        at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)

        at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

        at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

        at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

        at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

        at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64

)

        at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)

        at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)

        at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

        at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)

        at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)

        at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)

        at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)

        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

        at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

        at java.lang.Thread.run(Thread.java:745)

Only chance to update attribute values is to remove authenticator execution from the flow, then add it back and set configuration again “for a first time”.

Any idea why the Authenticator configuration setting works for a first time, but next update rise an exception?

Brano.