Authentication against HTTP management interface with empty username causes Internal Server Error (status 500) -------------------------------------------------------------------------------------------------------------- Key: WFCORE-2162 URL: https://issues.jboss.org/browse/WFCORE-2162 Project: WildFly Core Issue Type: Bug Components: Security Reporter: Ondrej Lukas Assignee: Darran Lofthouse Priority: Blocker Fix For: 3.0.0.Alpha18 In case when empty username is passed during authentication to Management Console then exception is thrown to server log and Internal Server Error (status 500) is returned to user (which leads to displaying "Connect to Management Interface" page. User is not able to try to login again. In WildFly 10.1.0 this scenario works fine - after passing empty username during authentication, authentication failed and login window is displayed again. I request blocker due to regression. Exception thrown to server log: {code} ERROR [io.undertow.request] (management task-3) UT005071: Undertow request failed HttpServerExchange{ GET /management request {Accept=[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8], Accept-Language=[en-US,en;q=0.5], Accept-Encoding=[gzip, deflate], User-Agent=[Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0], Connection=[keep-alive], Authorization=[Digest username="", realm="ManagementRealm", nonce="AAAAAwAAAlzTPVPLC0qPi6CaEhTCHZa+QjsuAjn3OsQXcuDYAxrOtc+rRMs=", uri="/management", algorithm=MD5, response="cbd764e6c09577625476340f7bcfc84d", opaque="00000000000000000000000000000000"], Content-Type=[text/plain; charset=utf-8], Cookie=[__utma=111872281.1874867570.1477040206.1479886566.1479982414.11; __utmz=111872281.1477040206.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utmb=111872281.5.10.1479982414; __utmt=1; __utmc=111872281], Referer=[http://localhost:9990/console/App.html], Host=[localhost:9990]} response {X-Frame-Options=[SAMEORIGIN]}}: java.lang.IllegalArgumentException at javax.security.auth.callback.NameCallback.<init>(NameCallback.java:90) at org.wildfly.security.http.impl.DigestAuthenticationMechanism.getH_A1(DigestAuthenticationMechanism.java:233) at org.wildfly.security.http.impl.DigestAuthenticationMechanism.validateResponse(DigestAuthenticationMechanism.java:189) at org.wildfly.security.http.impl.DigestAuthenticationMechanism.evaluateRequest(DigestAuthenticationMechanism.java:121) at org.wildfly.security.http.util.SetMechanismInformationMechanismFactory$1.evaluateRequest(SetMechanismInformationMechanismFactory.java:115) at org.wildfly.security.http.util.SecurityIdentityServerMechanismFactory$1.evaluateRequest(SecurityIdentityServerMechanismFactory.java:77) at org.wildfly.security.http.HttpAuthenticator$AuthenticationExchange.authenticate(HttpAuthenticator.java:106) at org.wildfly.security.http.HttpAuthenticator$AuthenticationExchange.access$100(HttpAuthenticator.java:90) at org.wildfly.security.http.HttpAuthenticator.authenticate(HttpAuthenticator.java:74) at org.wildfly.elytron.web.undertow.server.SecurityContextImpl.authenticate(SecurityContextImpl.java:82) at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:50) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:207) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:809) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) {code}