Title:
======
Facebook Fit-ify! - SQL Injection Vulnerability


Date:
=====
2011-12-18


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=337


VL-ID:
=====
337


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

(Copy from the Vendors Homepage: http://facebook.com/pages/I-may-be-gone-some-time/)

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 - Fit-ify! (apps.facebook.com).


Report-Timeline:
================
2011-11-22:  Vendor Notification
2011-12-18:  Public or Non-Public Disclosure


Status:
========
Published


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


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


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

Vulnerable Module(s): 
                                  [+] Fit-ify! - Facebook 3rd Party Application

Vulnerable Param(s)/File(s): 
                                  [+] 143596152351911?sk=app_8209307103

Affected Application: 
                                  [+] facebook.com/pages/I-may-be-gone-some-time/


--- SQL Error Logs ---
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /home/fitify/fitify.com/lib.php on line 196
You haven\\\'t recorded any work-outs yet. Time to get outside and start exercising!
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /home/fitify/fitify.com/lib.php on line 538
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /home/fitify/fitify.com/lib.php on line 538
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /home/fitify/fitify.com/lib.php on line 538
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /home/fitify/fitify.com/lib.php on line 245
    
Picture(s):
            ../1.png


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

URL:    facebook.com/pages
Path:    /I-may-be-gone-some-time/
Request:  143596152351911?sk=app_8209307103

Example:
http://[FACEBOOK]/[PAGE]/[FILE]?[PARAM]=[ID]&[SQL Injection]


PoC:
http://www.facebook.com/pages/I-may-be-gone-some-time/143596152351911?sk=app_8209307103[SQL-Injection]


Solution:
=========
Use the prepared statement class to fix the sql injection vulnerability & filter sql error requests.
Set error(0) to prevent against information disclosure via exceptions or error reports.


Risk:
=====
The security risk of the application sql injection vulnerabilities are estimated as high(+).


Credits:
========
Vulnerability Laboratory Researcher      -   Ucha G. (longrifle0x)


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-
Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business 
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states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation 
may not apply. Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability-
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 © 2011|Vulnerability-Lab






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