[keycloak-user] Error thrown with invalid bearer token

[Conrad Winchester]

Hi again

I think I my have found another bug. If I send in a bearer token that is invalid keycloak  throws an error rather than returning an ‘Unauthorised' response


[0m06:26:20,551 ERROR [io.undertow.request] (default task-105) UT005023: Exception handling request to /shift-server/shift/users: java.lang.RuntimeException: java.lang.RuntimeException: Illegal base64url string!
	at org.keycloak.jose.jws.JWSInput.<init>(JWSInput.java:39) [keycloak-core-1.0-beta-2.jar:]
	at org.keycloak.RSATokenVerifier.verifyToken(RSATokenVerifier.java:20) [keycloak-core-1.0-beta-2.jar:]
	at org.keycloak.RSATokenVerifier.verifyToken(RSATokenVerifier.java:16) [keycloak-core-1.0-beta-2.jar:]
	at org.keycloak.adapters.BearerTokenRequestAuthenticator.authenticate(BearerTokenRequestAuthenticator.java:63) [keycloak-adapter-core-1.0-beta-2.jar:]
	at org.keycloak.adapters.RequestAuthenticator.authenticate(RequestAuthenticator.java:37) [keycloak-adapter-core-1.0-beta-2.jar:]
	at org.keycloak.adapters.undertow.ServletKeycloakAuthMech.authenticate(ServletKeycloakAuthMech.java:38) [keycloak-undertow-adapter-1.0-beta-2.jar:]
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:281) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:298) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.access$100(SecurityContextImpl.java:268) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.impl.SecurityContextImpl.attemptAuthentication(SecurityContextImpl.java:131) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.impl.SecurityContextImpl.authTransition(SecurityContextImpl.java:106) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.impl.SecurityContextImpl.authenticate(SecurityContextImpl.java:99) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:54) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.server.handlers.DisableCacheHandler.handleRequest(DisableCacheHandler.java:27) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at org.keycloak.adapters.undertow.ServletPreAuthActionsHandler.handleRequest(ServletPreAuthActionsHandler.java:54) [keycloak-undertow-adapter-1.0-beta-2.jar:]
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0]
	at java.lang.Thread.run(Thread.java:744) [rt.jar:1.8.0]
Caused by: java.lang.RuntimeException: Illegal base64url string!
	at org.keycloak.util.Base64Url.decode(Base64Url.java:33) [keycloak-core-1.0-beta-2.jar:]
	at org.keycloak.jose.jws.JWSInput.<init>(JWSInput.java:30) [keycloak-core-1.0-beta-2.jar:]
	... 35 more


Conrad