[MajorSecurity SA-069]Invision Power Board - stored Cross site Scripting

[david.kurz@xxxxxxxxxxxxxxxxx]

[MajorSecurity SA-069]Invision Power Board - stored Cross site Scripting

Details
=======
Product: Invision Power Board
Security-Risk: moderated
Remote-Exploit: yes
Vendor-URL: http://www.invisionpower.com
Vendor-Status: informed
Advisory-Status: published

Credits
============
Discovered by: David Vieira-Kurz
http://www.majorsecurity.info/penetrationstest.php


Affected Products:
----------------------------
Invision Power Board 3.0.5 and prior

Introduction
============
Invision Power Board is a widely used forums script.

More Details
============
Input passed to the calendar app (which is one of the core modules inside 
invision power board) is not properly sanitised before being stored and 
returned to the user.
This can be exploited to execute arbitrary HTML and script code in a user's 
browser session in context of an affected site.
The calendar can be shown on every page of the invision board, so that in fact 
this is a serious security issue.

Solution
=============
Web applications should never trust on user generated input and therefore 
sanatize all input.

MajorSecurity
================
MajorSecurity is a German penetrationtesting and security research company 
which focuses
on web application security. We offer professional penetrationstest, security 
audits,
source code reviews.