by r0t,der4444,cembo,VietMafia

Wednesday, December 21, 2005

PortalApp XSS vuln.

PortalApp XSS vuln.

Vuln. discovered by : r0t
Date: 21 dec. 2005
vendor:http://www.portalapp.com/
affected version:3.3 and prior


Product Description:

PortalApp is an open source Web application that combines content management with e-commerce and collaboration. It falls somewhere between a portal, content management system, a web bulletin board system, storefront and a collaborative application. PortalApp is an instant website that is skinnable and standards-based. PortalApp is designed to enable your address 90% of the functionality that most Websites require. It enables you to sell on-line, manage members, and easily update content -- whereever and whenever you need. PortalApp can be used as a content management system, business Website, collaboration tool, community, project management tool and other content-centric Web-based initiatives.


Vuln. Description:

PortalApp contains a flaw that allows a remote cross site scripting attack. This flaw exists because input passed to "ret_page" paremter in "login.asp" isn't properly sanitised before being returned to the user.
This could allow a user to create a specially crafted URL that would execute arbitrary code in a user's browser within the trust relationship between the browser and the server, leading to a loss of integrity.

example:

/login.asp?ret_page=[XSS]

Solution:
Edit the source code to ensure that input is properly sanitised.

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