Polycom VVX Web Interface Privilege Escalation
Posted on 27 January 2017
# 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.
