[Zope-dev] Re: Suggestion for small(?) change in BaseRequest.py. Security effects?

Tres Seaver tseaver at zope.com
Fri Sep 3 08:56:37 EDT 2004

Lennart Regebro wrote:
> Dieter Maurer wrote:
>> Lennart Regebro wrote at 2004-9-2 12:38 +0200:
>>> ...
>>> Are there any other problems with NOT raising an exception in 
>>> unathorized(). Becuase if there is, we probably limit the possible 
>>> challenge responses to a redirect, and then this change makes no 
>>> difference.
>> If the traversal made any changes to persistent state, then
>> these changes are committed rather than aborted.
>> Usually, traversal should not change the persistent state -- but...
> Would the transaction.abort() addition suggested by Tino be enough to 
> solve that?


I am worried that there may be third-party application code which relies 
on 'validate' to raise an exception.  Returning the login form directly 
is not really a big win over a redirect;  among other things, it messes 
up cacheability, because the URL no longer corresponds to the "real" 

Tres Seaver                                tseaver at zope.com
Zope Corporation      "Zope Dealers"       http://www.zope.com

More information about the Zope-Dev mailing list