Title:
======
Facebook Profile Sticker - SQL Injection Vulnerability


Date:
=====
2012-02-03


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=409


VL-ID:
=====
409


Introduction:
=============
The application is currently included and viewable by all facebook users.
The service is an external 3rd party application sponsored by the Facebook Profile Sticker Development Team.

(Copy from the Vendors Homepage: http://apps.facebook.com/myprofilestickers/)

Facebook is a social networking service and website launched in February 2004, operated and privately owned 
by Facebook, Inc. As of July 2011, Facebook has more than 750 million active users. Users may create 
a personal profile, add other users as friends, and exchange messages, including automatic notifications when 
they update their profile. Facebook users must register before using the site. Additionally, users may join 
common-interest user groups, organized by workplace, school or college, or other characteristics. 

(Copy of the Vendor Website: http://en.wikipedia.org/wiki/Facebook)


Abstract:
=========
Vulnerability-Lab researcher discovered a remote SQL Injection vulnerability on the 3rd party web 
application - Facebook Profile Sticker (apps.facebook.com).


Report-Timeline:
================
2012-02-03:  Public or Non-Public Disclosure


Status:
========
Published


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


Severity:
=========
High


Details:
========
A remote SQL Injection vulnerability is detected on the Facebook Profile Sticker application (apps.facebook).
The vulnerability allows an attacker (remote) to inject/execute own sql statements on the affected fb application dbms.

Vulnerable Module(s): 
                                  [+] Profile Sticker - Facebook 3rd Party Application

Vulnerable Param(s)/File(s): 
                                  [+] index.php


Affected Application: 
                                  [+] apps.facebook.com/myprofilestickers


--- SQL Error Logs ---
Fatal error: Uncaught exception  DbQueryFailure  with message  You have an error in your SQL syntax; check the manual 
that corresponds to your MySQL server version for the right syntax to use near  -9 , 9  at line 1 SELECT * FROM stickers 
where active = 1 and user > 0 order by times_added desc limit -9 , 9  in /var/www/html/profilestickers/lib/classes/Db.php:47 
Stack trace: #0 /var/www/html/profilestickers/ajax_scripts/get_stickers.php(69): Db->query( SELECT * FROM s... ) #1 
/var/www/html/profilestickers/index.php(297): include_once( /var/www/html/p... ) #2 {main} thrown in /var/www/html
/profilestickers/lib/classes/Db.php on line 47
  
    
Picture(s):
            ../1.png


Proof of Concept:
=================
The vulnerability can be exploited by remote attackers. For demonstration or reproduce ...

URL:  http://apps.facebook.com/
Path:  /myprofilestickers/
File:  index.php


Example:
http://[APP-SERVER]/[SERVICE-APP]/[FILE].[PHP]?[VALUE]=[SQL Injection]


PoC:
http://apps.facebook.com/myprofilestickers/index.php?page=-1'[SQL-Injection]


Risk:
=====
The security risk of the application sql injection vulnerability is estimated as high.


Credits:
========
Vulnerability Research Laboratory -   Benjamin Kunz Mejri


Disclaimer:
===========
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-
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Lab. 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 or its suppliers.

                Copyright © 2012|Vulnerability-Lab




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