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Polycom VVX Web Interface Privilege Escalation

Polycom VVX Web Interface Privilege Escalation
Posted Jan 27, 2017
Authored by m8r0wn

The Polycom VVX web interface allows a user to change an admin's password.

tags | exploit, web
advisories | CVE-2021-41322
SHA-256 | 792d01d2d9f6e4be042118b490119eb300113d93351f7dfbda47eb3c8d1bc212

Polycom VVX Web Interface Privilege Escalation

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# Exploit Title: Polycom VVX Web Interface

- Privilege Escalation

# Date: 01/26/2017
# Exploit Author: m8r0wn
# Vendor Homepage:
http://www.polycom.com/
# Software Link:
http://downloads.polycom.com/voice/voip/uc_sw_releases_matrix.html
# Version: Polycom VVX 400/410, Software Version: 5.3.1
# CVE :

CVE-2021-41322

# This vulnerability

allows under-privileged users to change the "Admin" account password
# leading to privilege escalation.

1. Login with the "User" Account (default pwd: 123).
2. Navigate to: Settings > Change Password.
3. Fill in "Old Password" field with the current "User" password.
4. Fill in "New Password" field with the new "Admin" account password, and confirm.
5. Click "Save" and use a web application proxy to modify the request:

Change "122=" to "120=" in the POST data to associate the new password with the "Admin" account.

6

. An error will be shown on screen,but the Admin account password has been changed.
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