CVE-2024-11308
📋 TL;DR
CVE-2024-11308 is a hardcoded encryption key vulnerability in DVC from TRCore that allows attackers to decrypt protected files. This affects systems using the vulnerable DVC software for file encryption. Attackers can restore original file contents without authentication.
💻 Affected Systems
- DVC from TRCore
📦 What is this software?
Dvc by Trcore
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of encrypted sensitive data including credentials, configuration files, and proprietary information stored using DVC encryption.
Likely Case
Exfiltration and decryption of sensitive files containing business data, credentials, or configuration information.
If Mitigated
Limited impact if files are additionally protected by other security controls or contain only non-sensitive data.
🎯 Exploit Status
Exploitation requires only the hardcoded key and access to encrypted files. No authentication or special privileges needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://www.twcert.org.tw/en/cp-139-8241-1af92-2.html
Restart Required: No
Instructions:
1. Check vendor advisory for patched version. 2. Update DVC software to patched version. 3. Re-encrypt all previously encrypted files with new encryption method.
🔧 Temporary Workarounds
Disable DVC encryption
allStop using DVC for file encryption and use alternative encryption methods
# Configuration dependent - disable DVC encryption in application settings
Additional encryption layer
linuxApply additional encryption to files using secure methods before DVC encryption
# Example: gpg --symmetric --cipher-algo AES256 file.txt
🧯 If You Can't Patch
- Isolate systems using DVC encryption from untrusted networks
- Implement strict access controls and monitoring for encrypted files
🔍 How to Verify
Check if Vulnerable:
Check if DVC software is installed and used for file encryption. Review encryption implementation for hardcoded keys.Check Version:
# Platform dependent - check DVC version through application interface or package managerVerify Fix Applied:
Verify DVC version is updated to patched version and test that new encryption uses unique keys.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns to encrypted files
- Multiple decryption attempts on DVC-encrypted files
Network Indicators:
- Unexpected transfers of encrypted files to external systems
SIEM Query:
source="*" ("DVC" AND "decrypt") OR ("encrypted" AND "file access")