Regression in DR19, Elytron unable to authenticate with kerberos using jboss-cli -------------------------------------------------------------------------------- Key: WFCORE-2931 URL: https://issues.jboss.org/browse/WFCORE-2931 Project: WildFly Core Issue Type: Bug Components: Security Reporter: Martin Choma Assignee: Darran Lofthouse Priority: Blocker Fix For: 3.0.0.Beta29 Trying to connect with jboss-cli to server using kerberos leads to error {code} 14:41:22,654 TRACE [org.wildfly.security.sasl.gssapi.server] (management task-7) Client selected security layer AUTH, with maxBuffer of 65536 14:41:22,655 TRACE [org.jboss.remoting.remote.server] (management task-7) Server sending authentication rejected: javax.security.sasl.SaslException: ELY05123: [GSSAPI] No security layer selected but message length received at org.wildfly.security.sasl.gssapi.GssapiServer.evaluateMessage(GssapiServer.java:245) at org.wildfly.security.sasl.util.AbstractSaslParticipant.evaluateMessage(AbstractSaslParticipant.java:180) at org.wildfly.security.sasl.gssapi.GssapiServer.evaluateResponse(GssapiServer.java:121) at org.wildfly.security.sasl.util.AuthenticationCompleteCallbackSaslServerFactory$1.evaluateResponse(AuthenticationCompleteCallbackSaslServerFactory.java:58) at org.wildfly.security.sasl.util.AuthenticationTimeoutSaslServerFactory$DelegatingTimeoutSaslServer.evaluateResponse(AuthenticationTimeoutSaslServerFactory.java:106) at org.wildfly.security.sasl.util.SecurityIdentitySaslServerFactory$1.evaluateResponse(SecurityIdentitySaslServerFactory.java:57) at org.xnio.sasl.SaslUtils.evaluateResponse(SaslUtils.java:245) at org.xnio.sasl.SaslUtils.evaluateResponse(SaslUtils.java:217) at org.jboss.remoting3.remote.ServerConnectionOpenListener$AuthStepRunnable.run(ServerConnectionOpenListener.java:470) at org.jboss.remoting3.EndpointImpl$TrackingExecutor.lambda$execute$0(EndpointImpl.java:902) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) {code} Error message is little bit confusing as previous log message claims AUTH security layer is selected. Looking into code does not reveal meaning to me neither. {code:java|title=GssapiServer.java} log.tracef("Client selected security layer %s, with maxBuffer of %d", selectedQop, maxBuffer); if (relaxComplianceChecks == false && selectedQop == QOP.AUTH && maxBuffer != 0) { throw log.mechNoSecurityLayerButLengthReceived(getMechanismName()).toSaslException(); } {code}