+-------[ bruno modulix ]----------------------
| Dieter Maurer wrote:
| Hi Dieter
| > bruno modulix wrote at 2005-9-27 11:34 +0200:
| > 
| >>I have a little problem with aquisition and security. We have a project
| >>using multiple CPS instances (for those that don't know CPS, it's a CMF
| >>based groupware/CMS) running in the same Zope instance, and being
| >>siblings of each others [1]. One of these instances is the main entry
| >>point for the portal (I'll all it the 'portal'), the others are acting
| >>as workspaces for dedicated communities (I'll call them CPMs).
| >>
| >>Each CPS instance has its own UserFolder. All users exists in the
| >>portal's UserFolder, but only exists in some CPMs UserFolders. Now the
| >>problem is that, due to acquisition, a member existing in the Portal but
| >>not in a given CPM can gain access to this CPM by faking the url - ie:
| >>going to mydomain.tld/portal/cpm instead of mydomain.tld/cpm. So we have
| >>a potential (err...) security hole here, that I would like to address ASAP.
| > 
| > 
| > Sounds like a permission to role mapping flaw...
| > 
| >   Apparently, roles controlled by the "Portal" UserFolder (e.g.
| >   "Authenticated") are allowed to do things in your CPM that
| >   you only be allowed by roles controlled by their UserFolder.
| > 
| > You may be able to fix this by making the roles controlled
| > by the "Portal" and the "CPM" level disjoint.
| > 
| > "Authenticated" cannot be made disjoint -- but you may not use
| > it inside your CPMs.
| The problem here is that CPS (the portal and all CPMs are CPS instances)
| uses predefined roles, on which the various workflows relies, so that
| would mean renaming all roles - differently - on each CPM, and modifying
| the workflows too. Given that the customer is going to create new CPMs
| "at will", I'm afraid this solution is somewhat unpractical...

And turning off "Acquire" roles on the security tab of the folders you don't
want to have acquired doesn't work?

Andrew Milton
Zope maillist  -  Zope@zope.org
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