CVE-2023-3049
📋 TL;DR
CVE-2023-3049 is an unrestricted file upload vulnerability in TMT Lockcell that allows attackers to upload malicious files and execute arbitrary commands on affected systems. This affects Lockcell versions before 15, potentially leading to complete system compromise.
💻 Affected Systems
- TMT Lockcell
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with remote code execution, data theft, lateral movement, and persistent backdoor installation.
Likely Case
Unauthorized file upload leading to command injection, system access, and potential data exfiltration.
If Mitigated
Limited impact with proper file upload restrictions and command execution controls in place.
🎯 Exploit Status
Combination of file upload and command injection suggests straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 15 or later
Vendor Advisory: https://fordefence.com/cve-2023-3049-unrestricted-upload-of-file-with-dangerous-type-vulnerability-allows-command-injection/
Restart Required: Yes
Instructions:
1. Download Lockcell version 15 or later from official vendor source. 2. Backup current configuration. 3. Install updated version following vendor instructions. 4. Restart Lockcell service.
🔧 Temporary Workarounds
Restrict File Upload Types
allConfigure Lockcell to only accept specific safe file types and implement file extension validation.
Disable Unnecessary Upload Functionality
allTemporarily disable file upload features if not required for operations.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Lockcell systems
- Deploy web application firewall with file upload and command injection rules
🔍 How to Verify
Check if Vulnerable:
Check Lockcell version via admin interface or configuration files. Versions below 15 are vulnerable.Check Version:
Check Lockcell admin panel or configuration files for version information.Verify Fix Applied:
Confirm Lockcell version is 15 or higher and test file upload functionality with restricted file types.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads, unexpected command execution attempts, file type validation failures
Network Indicators:
- Suspicious file uploads to Lockcell endpoints, unexpected outbound connections post-upload
SIEM Query:
source="lockcell" AND (event="file_upload" OR event="command_execution")🔗 References
- https://fordefence.com/cve-2023-3049-unrestricted-upload-of-file-with-dangerous-type-vulnerability-allows-command-injection/
- https://www.usom.gov.tr/bildirim/tr-23-0345
- https://fordefence.com/cve-2023-3049-unrestricted-upload-of-file-with-dangerous-type-vulnerability-allows-command-injection/
- https://www.usom.gov.tr/bildirim/tr-23-0345
