SoundTap 2.27 - Code Execution Vulnerability

Document Title:
===============
SoundTap 2.27 - Code Execution Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1650


Release Date:
=============
2015-11-22


Vulnerability Laboratory ID (VL-ID):
====================================
1650


Common Vulnerability Scoring System:
====================================
8.1


Product & Service Introduction:
===============================
http://www.nch.com.au/
http://www.nch.com.au/soundtap/stsetup.exe


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a code execution vulnerability in the official SoundTap v2.27 software.


Vulnerability Disclosure Timeline:
==================================
2015-11-22:	Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
NCH Software
Product: SoundTap 2.27


Exploitation Technique:
=======================
Local


Severity Level:
===============
High


Technical Details & Description:
================================
A local code execution vulnerability has been discovered in the official SoundTap v2.27 software.
The bug allows a local attacker to execute malicious codes by interaction with a vulnerable software input field.

The security vulnerability is present in the `url` input field when processing the SoundTap > Launch Url module. 
Local attackers are able to inject malicious payloads as url input for the `Launch Url` convert to compromise 
the software system process. The vulnerability can be exploited by local attackers without interaction. The severity 
of the issue is high and the bug can be exploited because of a misconfigured url input validation mechanism.

The security risk of the code execution vulnerability is estimated as high with a cvss (common vulnerability scoring 
system) count of 8.0. Exploitation of the vulnerability requires a low privilege system user account and no user interaction. 
Successful exploitation of the software vulnerability results in system compromise by a classic url code execution.

Vulnerable Module(s):
			[+] SoundTap > Launch Url

Vulnerable Input(s):
			[+] url

Affected Module(s):
			[+] Enter url Launch


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by local network attackers without privileged device user account and without user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

Manual steps to reproduce the vulnerability ...
1. Launch SoundTap.exe                
2. Click SoundTap -> Launch Url                     
3. Paste malicious url in input "Enter url Launch"
4. Click ok
5. PHP code executed successfully

PoC: Code Execution Calculator
<?php  eval(base64_decode('ZXZhbChiYXNlNjRfZGVjb2RlKCdaWFpoYkNoaVlYTmxOalJmWkdWamIy
                   UmxLQ2RhV0doc1dYbG5ibEY2Y0dOV01HeFBVa1U1V0ZVeGVIcGxXRTR3V
                   2xjd2VrMXNlR3BaVjNocVRHMVdORnBUWTNCUGR6MDlKeWtwT3c9PScpKTs='));


Security Risk:
==============
The security risk of the code execution vulnerability in the launch url module of the soundtap software is estimated as high. (CVSS 8.1)


Credits & Authors:
==================
ZwX - (http://zwx.fr) [ http://www.vulnerability-lab.com/show.php?user=ZwX ]


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=========================
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