Polycom VVX Web Interface Privilege Escalation

`# Exploit Title: Polycom VVX Web Interface - Change Admin Password as User  
# Date: January 26, 2017  
# Exploit Author: Mike Brown  
# Vendor Homepage: http://www.polycom.com/  
# Software Link: http://downloads.polycom.com/voice/voip/uc_sw_releases_matrix.html  
# Version: Polycom vvx 410 UC Software Version: 5.3.1.0436  
# CVE : N/A  
  
# This module requires the user to have access to the "User" account (Default User:123) in the Polycom VoIP phone's web interface.   
# The user can use the following steps to escalate privileges and become the Admin user to reveal menu items internal IP addresses   
# and account information.  
  
1. Login with the "User" Account.  
2. Navigate to Settings > Change Password.  
3. Fill in "Old Password" with the current "User" password.  
4. Fill in "New Password" with the new "Admin" account password, and confirm.  
5. Using a live HTML editor, inspect the old password field. you will see:  
<input id="olduserpswd" name="122" isrebootrequired="false" helpid="525" value="" paramname="device.auth.localUserPassword"   
default="" config="????" variabletype="string" min="0" max="32" maxlength="32" hintdivid="userAccountConf.htm_1" type="password">  
6. Change the name field to "120"   
7. Click "Save"  
8. An error will be shown on screen but you can now log into the Admin account with the new password.  
  
  
`