Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Spring Security: "GSSHeader did not find the right tag" #28

Open
vilmosnagy opened this issue Feb 25, 2021 · 2 comments
Open

Spring Security: "GSSHeader did not find the right tag" #28

vilmosnagy opened this issue Feb 25, 2021 · 2 comments
Milestone
0.1.4

Comments

@vilmosnagy
Copy link

Hi there,

I'm trying to get this work with Spring Security and Vaadin 8.

Is there an example project which I can take a look at?

Currently I have the following setup in the application-context.xml:

<sec:http entry-point-ref="spnegoEntryPoint">
    <sec:intercept-url pattern="/**" access="hasRole('Authenticated')"/>
    <sec:custom-filter ref="spnegoAuthenticationProcessingFilter"
                       position="BASIC_AUTH_FILTER"/>
    <sec:form-login login-page="/login.html" default-target-url="/secure/index.jsp"/>
</sec:http>
 
<sec:authentication-manager alias="authenticationManager">
    <sec:authentication-provider ref="kerberosServiceAuthenticationProvider"/> <!-- Used with SPNEGO -->
    <sec:authentication-provider user-service-ref="dummyUserDetailsService"/> <!-- Used with form login -->
</sec:authentication-manager>
 
<bean id="kerberosServiceAuthenticationProvider"
      class="com.kerb4j.server.spring.SpnegoAuthenticationProvider">
    <property name="ticketValidator">
        <bean class="com.kerb4j.server.spring.jaas.sun.SunJaasKerberosTicketValidator">
            <property name="servicePrincipal" value="HTTP/[email protected]"/>
            <property name="keyTabLocation" value="file:C:\Temp\foobar.keytab"/>
        </bean>
    </property>
    <property name="userDetailsService" ref="dummyUserDetailsService"/>
</bean>
 
<bean id="dummyUserDetailsService" class="com.company.DummyUserDetailsService"/>
 
<bean id="spnegoEntryPoint" class="com.kerb4j.server.spring.SpnegoEntryPoint"/>

And the web.xml has:

    <filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

The keytab file is correct, and the servicePrincipal here matches the one in the keytab file. Still, the app throws the Exception in the title, with the following stacktrace:

2021-02-25 13:09:54 WARN  SpnegoAuthenticationProcessingFilter:169 - Negotiate Header was invalid: Negotiate <TOKEN>
org.springframework.security.authentication.BadCredentialsException: Kerberos validation not successful
	at com.kerb4j.server.spring.jaas.sun.SunJaasKerberosTicketValidator.validateTicket(SunJaasKerberosTicketValidator.java:83)
	at com.kerb4j.server.spring.SpnegoAuthenticationProvider.authenticate(SpnegoAuthenticationProvider.java:108)
	at com.kerb4j.server.spring.SpnegoAuthenticationProvider.authenticate(SpnegoAuthenticationProvider.java:60)
	at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:174)
	at com.kerb4j.server.spring.SpnegoAuthenticationProcessingFilter.doFilterInternal(SpnegoAuthenticationProcessingFilter.java:165)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:66)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at com.mycompany.frontend.security.config.HttpSessionFilterBean.doFilter(HttpSessionFilterBean.java:23)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:191)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:516)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: GSSException: Defective token detected (Mechanism level: GSSHeader did not find the right tag)
	at java.security.jgss/sun.security.jgss.GSSHeader.<init>(GSSHeader.java:97)
	at java.security.jgss/sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:325)
	at java.security.jgss/sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:303)
	at java.security.jgss/sun.security.jgss.spnego.SpNegoContext.GSS_acceptSecContext(SpNegoContext.java:905)
	at java.security.jgss/sun.security.jgss.spnego.SpNegoContext.acceptSecContext(SpNegoContext.java:556)
	at java.security.jgss/sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:361)
	at java.security.jgss/sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:303)
	at com.kerb4j.client.SpnegoContext.acceptToken(SpnegoContext.java:55)
	at com.kerb4j.server.spring.jaas.sun.SunJaasKerberosTicketValidator.validateTicket(SunJaasKerberosTicketValidator.java:68)
	... 63 more

If I debug the app at the GSSHeader.java:97, the the variable tag has the value of 78 <- my guess is that the app fails 'cause of this.

Thanks for any help,
@bedrin
Copy link
Owner

bedrin commented Feb 25, 2021

Kerberos erros can be misleading.

I would say that following lines look suspicious:

            <property name="servicePrincipal" value="HTTP/[email protected]"/>
            <property name="keyTabLocation" value="file:C:\Temp\foobar.keytab"/>

Say you have an AD account for your server called srv_server
DNS name of your server (A-record ideally) is foo.bar and your srv_server account has HTTP/foo.bar SPN associated with it.

In this case you should create keytab for account srv_server (it's case sensitive; you wouldn't get an error when creating keytab if you mess up something) and use srv_server as servicePrincipal property.

Hope it helps.

@vilmosnagy
Copy link
Author

vilmosnagy commented Mar 4, 2021 •
edited
Loading

@bedrin thanks for the help.

one more question: so the srv_server is the name of the account, and the servicePrincipal's value should be srv_server as well?

            <property name="servicePrincipal" value="srv_server"/> <!-- as here -->

with this setup I got the following stacktrace:

Stack trace:
javax.security.auth.login.LoginException: Unable to obtain password from user
     at com.sun.security.auth.module.Krb5LoginModule.promptForPass(Krb5LoginModule.java:856)
...

Edit:
If I list the keytab file it contains the following info:

$ java sun.security.krb5.internal.tools.Klist -k -t /c/Temp/app.keytab
 
Key tab: C:/Temp/app.keytab, 5 entries found.
 
[1] Service principal: HTTP/[email protected]
         KVNO: 5
         Time stamp: Jan 01, 1970 01:00:00
[2] Service principal: HTTP/[email protected]
         KVNO: 5
         Time stamp: Jan 01, 1970 01:00:00
[3] Service principal: HTTP/[email protected]
         KVNO: 5
         Time stamp: Jan 01, 1970 01:00:00
[4] Service principal: HTTP/[email protected]
         KVNO: 5
         Time stamp: Jan 01, 1970 01:00:00
[5] Service principal: HTTP/[email protected]
         KVNO: 5
         Time stamp: Jan 01, 1970 01:00:00

@bedrin bedrin modified the milestone: 0.1.1 May 31, 2021
@bedrin bedrin added this to the 0.1.4 milestone Jan 2, 2023
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
0.1.4
Development

No branches or pull requests
2 participants
@bedrin @vilmosnagy