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Category:   Application (Commerce)  >   JShop Vendors:   Whorl Limited
JShop Input Validation Flaw in 'page.php' Lets Remote Users Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1011020
SecurityTracker URL:  http://securitytracker.com/id/1011020
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Aug 23 2004
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  

Description:   Dr`Ponidi of Indohack reported a vulnerability in JShop. A remote user can conduct cross-site scripting attacks.

It is reported that the 'page.php' script does not filter HTML code from user-supplied input in the 'xPage' parameter before displaying the information. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the JShop software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A demonstration exploit example is provided:

http://[target]/page.php?xPage=<SCRIPT>alert(document.cookie)</SCRIPT>

The vendor has reportedly been notified.

The original advisory is available at:

http://indohack.sourceforge.net/drponidi/jshop-vuln.txt

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the JShop software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   No solution was available at the time of this entry.
Vendor URL:  jshop.co.uk/products_jss.php (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  JShop Input Validation Hole in 'page.php' Permits Cross-Site


Indonesia Security Development Team (Indohack)
http://indohack.sourceforge.net/drponidi
===========================================================================
Security Advisory


Advisory Name: JShop Input Validation Hole in 'page.php' Permits Cross-Site Scripting Attacks 
     Platform: Linux (Any), UNIX (Any), Windows (Any)
 Release Date: 22/8/04
       Author: Dr`Ponidi
  Discover by: Dr`Ponidi
Vendor Status: Notified
   Vendor URL: http://jshop.co.uk/products_jss.php 
    Reference: http://indohack.sourceforge.net/drponidi
ContactPerson: #dhegleng, #Indohack [at] dalnet 

[Overview]
JShop is a e-commerce system designed for servers that support
both PHP and mySQL. Featuring a wealth of features for high-end e-commerce systems,
such as customer accounts, stock control and order processing, JShop is designed
for those companies wanting to offer a greater level of service to their on-line customers.

[Proof of Concept]
http://vulnerable/page.php?xPage=<SCRIPT>alert(document.cookie)</SCRIPT>

[Suggestion]
Filter out the variable for tags and for other special chars.

[About Indonesia Security Development Team]
Indonesia Security Development Team (Indohack) is the leading provider of security solutions for the 
enterprise.We offers services in computer security, penetration testing and network assesment,
web application security, source code review and third party product vulnerability assesment,
forensic support and reverse engineering.Our security experts, combined with our strong support 
team, deliver up-to-date application safeguards that minimize risk and eliminate its impact on
business.We are not encouraging any illegal activity such as falsifying information.Every user 
is responsible for their own online activity.Please contact us at admin[at]indohack.sourceforge.net
to learn more, or visit us on the web at http://indohack.sourceforge.net





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