On Tue, Jun 19, 2012 at 5:20 PM, Vincent Massol <[email protected]> wrote:
> > On Jun 19, 2012, at 3:16 PM, Jerome Velociter wrote: > > > On Tue, Jun 19, 2012 at 2:58 PM, David Delbecq <[email protected] > >wrote: > > > >> Hello, > >> > >> > >> unfortunately, we don't have any explicit sso service currently running. > >> In the past, we simply asked the container (tomcat) to manage > >> authentication of users for all our webapplication and we followed > tomcat > >> directions on how to share principal for all applications ( > >> > http://tomcat.apache.org/tomcat-5.5-doc/config/valve.html#Single_Sign_On_Valve > ). > >> This works well when all application use container authentication and > the > >> only client is the user's web browser. Unfortunately, things will > change as > >> we will base our intranet on xwiki instead of having separate spread > >> applications the user needs to connect to. This mean the web server (now > >> jboss) will be the http client of all other services, and thus realm > based > >> sso won't work. For some of those service we use generic technical > account, > >> so no problem, we just store the password. But for some other, we must > >> transmit the user / password of current xwiki user so xwiki is seen by > this > >> service as this user. > >> > >> And none of those behind the scene applications were ever configured to > >> use kerberos or anything alike. Moreover, i would like to avoid the > >> nightmare of maintaining such a service when simply forwaring user / > pass > >> to next service would solve my problems :) > >> > > > > Storing plain-text user password is never a good idea, be it on the > > database, filesystem or in memory. > > > > If you store passwords in the session, some XWiki applications could read > > them, someone in your organization with programming access level can > access > > them, a hacker that escalate to have access to the machine or to > > programming rights in the application can read them, etc. > > yep I confirm that it's definitely a no go from a security point of view. > > The first rule of security is that nobody should ever be able to get > access to the password in clear. Yes, and that even if the application does not require strong authentication. You are protecting an application, but also, and moreover, you are protecting the passwords. If for some reason you are storing plain text password, users must be aware of that so that they can pick a password with no value. This is what mailman does when you subscribe to a mailing list, see for example : http://lists.xwiki.org/mailman/listinfo/users For your use case, if your "behind the scenes" applications do not require strong authentication, you are better off with no authentication at all than with clear text users passwords, especially if those are the LDAP/SSO passwords of your organization users. Jerome > Even encrypted is not always enough, see what happend with linkedin who > had sha-ed passwords but with no salt… ;) > > Thanks > -Vincent > > > Jerome > > > > > > > >> > >> Regards, > >> David Delbecq > >> > >> ----- Mail original ----- > >> > >> De: "Guillaume Lerouge" <[email protected]> > >> À: "XWiki Developers" <[email protected]> > >> Envoyé: Mardi 19 Juin 2012 14:40:16 > >> Objet: Re: [xwiki-devs] Access password of current user > >> > >> Hi David, > >> > >> which SSO service dou you use internally? XWiki authenticators already > >> exist for CAS, Kerberos and NTLM, maybe you could draw inspiration from > >> them. > >> > >> Guillaume > >> > >> On Tue, Jun 19, 2012 at 1:54 PM, David Delbecq <[email protected] > >>> wrote: > >> > >>> > >>> Hello, > >>> > >>> I was hoping that somehow, when submitted via the form, password gets > >>> recorded until the end of the session. We can't afford, for the sake of > >>> user experience, to ask password every time user need to access a > hidden > >>> system he is not even supposed to know is separate from the wiki. > That's > >>> why we are writing some macro / components so that it's xwiki that > access > >>> those system for him. This include various webservices, a documents > >> storage > >>> and so on. We try to keep a single sign on policy. Of course, i don't > >> want > >>> user password stored anywhere on disks, but keeping it in user session > >>> seems a good trade-of for me. > >>> > >>> I plan thus to create my onw xwikiauthservice that delegates to ldap > >>> service and store this in user session. > >>> > >>> > >>> ----- Mail original ----- > >>> > >>> De: "Jerome Velociter" <[email protected]> > >>> À: "XWiki Developers" <[email protected]> > >>> Envoyé: Mardi 19 Juin 2012 11:53:42 > >>> Objet: Re: [xwiki-devs] Access password of current user > >>> > >>> Hi, > >>> > >>> Fortunately, you can't. You can only access/verify a hashed version of > >>> the password. > >>> > >>> Note that asking for a password again is not necessarily a bad UX, > >>> especially if it is to allow access to a sensitive area/operation. > >>> > >>> Cheers, > >>> Jerome. > >>> > >>> On Tue, Jun 19, 2012 at 11:39 AM, David Delbecq < > [email protected]> > >>> wrote: > >>>> > >>>> Hello, > >>>> > >>>> i am writing a component that need a password. Because this password > >>> will be the same for current user as the one he used to log-in, it > would > >>> make for crappy interface ot ask it again to user. So i need to know > how > >> my > >>> component or a groovy script can access the username / password of > >> current > >>> logged-in user. > >>>> > >>>> Thank you. > >>>> > >>>> > >>>> David Delbecq > _______________________________________________ > devs mailing list > [email protected] > http://lists.xwiki.org/mailman/listinfo/devs > -- Jérôme Velociter Winesquare http://www.winesquare.net/ _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
