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Date: Fri, 11 Dec 2015 21:30:01 +0000
From: Jake Reynolds <>
To: "" <>
Subject: [FD] Polycom VVX-Series Business Media Phones Path Traversal

Polycom VVX-Series Business Media Phones Path Traversal Vulnerability


Polycom VVX-series Business Media Phones allow authenticated users to execute file path traversal attacks

# Polycom


# Polycom VVX 101, 201, 300, 310, 400, 410, 500, 600, & 1500
# UC Software 4.1.8 and earlier, 5.2.3 and earlier, 5.3.1 and earlier, 5.4.0 and earlier


Polycom VVX-series IP phones provide a web administrative interface. Inside this interface we discovered two URLs that exposed a "file=filename" parameters. Due to unsafe file system operations in this interface, it is possible to exploit the following pages, and possibly others, using path traversal attacks:




Upgrade to the latest version of UC Software available.
Disable or restrict access to the web interface.


# 6/16/2015: Notified Polycom about the issue
# 6/17/2015: Polycom responds, indicates it is investigating
# 6/18/2015: Polycom acknowledges vulnerability legitimacy
# 6/26/2015: Polycom waiting on estimate for fix from engineering
# 7/22/2015: Polycom provides with projected timelines for fixes
# 11/24/2015: Polycom confirms all VVX branches are patched
# 12/9/2015: Polycom issues public vulnerability advisory


Jake Reynolds
Partner/Principal Consultant

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