[jboss-jira] [JBoss JIRA] Resolved: (SECURITY-536) Stacked login with subclassed Principal does not work.

[Marcus Moyses (JIRA)]

     [ https://jira.jboss.org/browse/SECURITY-536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcus Moyses resolved SECURITY-536.
------------------------------------

    Resolution: Done


Login module now inserts the Principal in the options map instead of the username.
When using a custom Principal class remember to add it to a group named CallerPrincipal in getRoleSets so it is the identity seen by EJBs, servlets and Web Services.

> Stacked login with subclassed Principal does not work.
> ------------------------------------------------------
>
>                 Key: SECURITY-536
>                 URL: https://jira.jboss.org/browse/SECURITY-536
>             Project: PicketBox (JBoss Security and Identity Management)
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: JBossSX
>    Affects Versions: PicketBox_v3_0_CR1
>         Environment: Windows XP; Jboss 5.1.0.GA;
>            Reporter: Craig Horrell
>            Assignee: Marcus Moyses
>
> The Principal is not propagated from login module to login module when using stacked logins. Instead, a new Principal is created, but only the first one survives.  This causes issued with subclassed SimplePrincipal that adds addition data to the class.
> Code references:
> 1. org.jboss.security.auth.spi.UsernamePasswordLoginModule: Method login():
>       Object username = sharedState.get("javax.security.auth.login.name");
>       if (username instanceof Principal) {
>         identity = (Principal) username;
>       } else {
>         String name = username.toString();
>         try {
>           identity = createIdentity(name);
>         } catch (Exception e) {
>           log.debug("Failed to create principal", e);
>           throw new LoginException("Failed to create principal: " + e.getMessage());
>         }
>       }
> The code above checks to see if the Object stored in the shared state is a Principal. This code is correct.
> 2. Later in the same method:
>     if (getUseFirstPass() == true) {    // Add the username and password to the shared state map
>       sharedState.put("javax.security.auth.login.name", username);
>       sharedState.put("javax.security.auth.login.password", credential);
>     }
> This is the bug. It stores the name instead of the Object, which causes the second login module to create a new Principal per the code above.
> 3. org.jboss.security.auth.spi.AbstractServerLoginModule: Method: commit():
>     Principal identity = getIdentity();
>     principals.add(identity);
> 'principals' is a Set. The add will not replace an existing identity, so the one created by the second login module is ignored.
> If the second login module got the object from the first, it could update it. As it is the second login module cannot do anything with the principal, as it is discarded.
> Complications: Some thought would have to be given as to what would happen if two different principal classes were specified in the config. Perhaps disallow that ?  
> Our specific issue: We have a subclassed SimplePrincipal that holds context based security information for that user that is checked as part of the authorization in our web services. We stack a LDAP login module for the user-id and password, then a subclass of DatabaseServerLoginModule that gets the roles and other context based data from a database.
> Work Around: in the subclassed  DatabaseServerLoginModule's getRoleSets() method we do: 
>     // To overcome stacked login bugs, we must replace the existing principal
>     // with a new one created here.
>     Principal pr = this.getIdentity();
>     log.trace("SlDbServerLoginModule: getRoleSets(): "
>           + "Got Principal from parent: user: " + pr.getName());
>     SlIdentity slId = new SlIdentity(pr.getName());
>     slId.addClientList(getSlClientList(username, roleSet));
>     slId.addSiteList(getSlSiteList(username, roleSet));
>     Set<Principal> prs = this.subject.getPrincipals();
>     prs.remove(pr);
>     prs.add(slId);
>     log.trace("SlDbServerLoginModule: getRoleSets(): "
>           + "Replaced Principal with SlIdentity: user: " + slId.getName());
>     return roleSets;
> Thanks,
> Craig.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira