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- Verify message position/type in `MineflayerBot.on_message` - Only process AuthMe login logic for 'system' or 'game_info' messages - Add regression test `backend/tests/test_authme_security.py` - Document vulnerability in `.jules/sentinel.md` Co-authored-by: HCID274 <62495428+HCID274@users.noreply.github.com>
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🛡️ Sentinel: [CRITICAL/HIGH] Fix AuthMe Login Spoofing via Chat
🚨 Severity: HIGH
💡 Vulnerability: The bot's AuthMe login detection relied on checking for the absence of a colon in the message text to distinguish system messages from player chat. This heuristic is fragile and allows players to spoof system messages (e.g., "Please /login") to trick the bot into sending its password or performing login actions when not required.
🎯 Impact: Players could potentially trick the bot into revealing its password (if the server echoes commands or if the bot logs it insecurely) or cause state confusion.
🔧 Fix: Updated
backend/bot/mineflayer_adapter.pyto strictly check thepositionargument provided by Mineflayer (which maps to message type: chat, system, game_info). AuthMe logic now only executes forsystemorgame_infomessages.✅ Verification: Added
backend/tests/test_authme_security.pywhich mocks Mineflayer and verifies that chat-based spoofing attempts are ignored while legitimate system messages are processed.PR created automatically by Jules for task 11327352975662787233 started by @HCID274