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Date: Tue, 22 Dec 2015 16:04:48 +0100
From: Vulnerability Lab <>
Subject: [FD] Switch v4.68 - Code Execution Vulnerability

Document Title:
Switch v4.68 - Code Execution Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Product & Service Introduction:

Abstract Advisory Information:
An independent vulnerability laboratory researcher discovered a code execution vulnerability in the official Switch v4.68 software.

Vulnerability Disclosure Timeline:
2015-11-23:	Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Affected Product(s):
NCH Software
Product: Switch 4.68

Exploitation Technique:

Severity Level:

Technical Details & Description:
A local code execution vulnerability has been discovered in the official Switch v4.68 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 to convert the audio stream data. Local attackers are able 
to inject malicious payloads as url input for the audio 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 8.2.
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):
			[+] Convert

Vulnerable Input(s):
			[+] url

Affected Module(s):
			[+] Audio Stream

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 Switch.exe                
2. Click convert > Convert the audio data stream                      
3. Paste malicious url in input `Enter url of the audio stream`
4. Click start the audio stream
5. PHP code executed successfully!

PoC: Code Execution Calculator

Security Risk:
The security risk of the code execution vulnerability in the convert module of the switch software is estimated as high. (CVSS 8.2)

Credits & Authors:
ZwX - ( [ ]

Disclaimer & Information:
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed 
or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable 
in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab 
or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for 
consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses, 
policies, deface websites, hack into databases or trade with fraud/stolen material.

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