Django Admin List Filter Data Extraction

`ADVISORY INFORMATION:  
Advisory ID: NGENUITY-2010-009  
Date discovered: 8.28.2010  
Date published: 12.22.2010  
  
SOFTWARE AFFECTED:  
“Django is a high-level Python Web framework that encourages rapid  
development and clean, pragmatic design.” [1]  
The admin interface of the Django web framework can be abused to extract  
information, such as user password hashes via list filters. Version  
1.1.2, 1.2.3 and before are affected. The advisory from the Django dev  
team can be found here [2].  
  
TECHNICAL DETAILS:  
The principle behind the vulnerability is similar to blind sql  
injection, but abuses a feature of t We can use list filters to follow  
foreign keys into models and data our user should not normally have  
access to. Using regular expressions gives us a lot of flexibility to  
work our way down the value we want to extract.  
  
For a model that has a created_by field that points to a User object we  
could extract the password hash using a request similar to the below.  
http://example.com/admin/testapp/testmodel/?created_by__password__regex=^sha1\$[0-9]$  
http://example.com/admin/testapp/testmodel/?created_by__password__regex=^sha1\$[a-f]$  
  
  
Authentication as a staff user in the admin is required to exploit this  
vulnerability. Here's looking at you CMS apps!  
  
CREDIT:  
This vulnerability was discovered by Adam Baldwin  
<mailto:[email protected]><mailto:[email protected]>  
REFERENCES:  
[1] - http://www.djangoproject.com  
[2] - http://www.djangoproject.com/weblog/2010/dec/22/security/  
[3] -  
http://ngenuity-is.com/advisories/2010/dec/22/information-leakage-in-django-administrative-inter/  
[4] -  
http://evilpacket.net/2010/dec/22/information-leakage-django-administrative-interfac/  
  
  
`