CVE-2024-12580
📋 TL;DR
This CVE describes a log injection vulnerability in LibreChat where unvalidated parameters in download APIs allow attackers to inject malicious content into application logs. This affects all LibreChat deployments prior to version 0.7.6, potentially compromising log integrity and security monitoring capabilities.
💻 Affected Systems
- LibreChat
📦 What is this software?
Librechat by Librechat
⚠️ Risk & Real-World Impact
Worst Case
Attackers could inject false log entries to cover tracks of other attacks, manipulate forensic investigations, or cause log analysis tools to malfunction, potentially hiding more serious security breaches.
Likely Case
Log data becomes unreliable for monitoring and troubleshooting, making it difficult to detect actual security incidents and increasing operational overhead for administrators.
If Mitigated
With proper input validation and log sanitization, the risk is reduced to minimal, though some log parsing tools might still be affected by residual injection attempts.
🎯 Exploit Status
Exploitation requires access to the download APIs but doesn't require authentication bypass. The vulnerability is straightforward to exploit once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.7.6
Vendor Advisory: https://github.com/danny-avila/librechat/commit/95d6bd2c2db4a09b308be2b96e3d5fd522c7b72a
Restart Required: Yes
Instructions:
1. Update LibreChat to version 0.7.6 or later. 2. Restart the LibreChat service. 3. Verify the fix by checking that input validation is applied to sessionId, fileId, userId, and file_id parameters.
🔧 Temporary Workarounds
Input Validation Middleware
allImplement custom middleware to validate and sanitize parameters before they reach the download endpoints.
Implement parameter validation in route handlers for /code/download/:sessionId/:fileId and /download/:userId/:file_id
Log Sanitization
allAdd log sanitization to strip or escape special characters before writing to logs.
Implement log sanitization function that escapes newlines, carriage returns, and other control characters
🧯 If You Can't Patch
- Implement WAF rules to block suspicious patterns in download API parameters
- Monitor logs for unusual patterns or injection attempts and implement alerting
🔍 How to Verify
Check if Vulnerable:
Check if LibreChat version is below 0.7.6 and examine if download APIs validate sessionId, fileId, userId, and file_id parameters.Check Version:
Check package.json or application configuration for LibreChat versionVerify Fix Applied:
Test download APIs with malicious input containing newlines or special characters and verify they are properly sanitized in logs.📡 Detection & Monitoring
Log Indicators:
- Unusual log entries with unexpected newlines or control characters
- Log entries that appear to contain multiple log events in single line
- Suspicious patterns in sessionId, fileId, userId, or file_id parameters
Network Indicators:
- HTTP requests to download APIs with unusual parameter values
- Requests containing newline characters or other log injection patterns
SIEM Query:
source="librechat" AND (message CONTAINS "\n" OR message CONTAINS "\r" OR message CONTAINS suspicious_patterns)