CVE-2024-4520
📋 TL;DR
This CVE-2024-4520 vulnerability allows any user on the gaizhenbiao/chuanhuchatgpt server to access other users' chat histories without authorization. It affects all users of version 20240410 of this application. The vulnerability stems from improper access control mechanisms in chat history data handling.
💻 Affected Systems
- gaizhenbiao/chuanhuchatgpt
📦 What is this software?
Chuanhuchatgpt by Gaizhenbiao
⚠️ Risk & Real-World Impact
Worst Case
Mass data breach exposing sensitive personal information, financial data, confidential conversations leading to identity theft, fraud, and reputational damage.
Likely Case
Unauthorized access to chat histories exposing personal conversations and potentially sensitive information shared in chats.
If Mitigated
Proper access controls prevent unauthorized cross-user data access, maintaining chat privacy and data confidentiality.
🎯 Exploit Status
Exploitation requires user access to the server but no special privileges or complex techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit ccc7479ace5c9e1a1d9f4daf2e794ffd3865fc2b
Vendor Advisory: https://github.com/gaizhenbiao/chuanhuchatgpt/commit/ccc7479ace5c9e1a1d9f4daf2e794ffd3865fc2b
Restart Required: Yes
Instructions:
1. Pull latest code from GitHub repository 2. Update to commit ccc7479ace5c9e1a1d9f4daf2e794ffd3865fc2b or later 3. Restart the application service
🔧 Temporary Workarounds
Network Isolation
allRestrict application access to trusted users only
Access Control Enhancement
allImplement additional authentication/authorization layers
🧯 If You Can't Patch
- Isolate the application to internal network only with strict user access controls
- Implement application-level access control middleware to validate user permissions before serving chat data
🔍 How to Verify
Check if Vulnerable:
Check if running version 20240410 of gaizhenbiao/chuanhuchatgptCheck Version:
Check git commit hash or application version in deployment configurationVerify Fix Applied:
Verify application is running commit ccc7479ace5c9e1a1d9f4daf2e794ffd3865fc2b or later📡 Detection & Monitoring
Log Indicators:
- Unusual cross-user data access patterns
- Multiple unauthorized chat history retrieval attempts
Network Indicators:
- Excessive chat history API calls from single user
- Unusual data transfer patterns
SIEM Query:
source="application_logs" AND (chat_history_access OR unauthorized_access) AND user_id!="current_user"