CVE-2024-13191
📋 TL;DR
This vulnerability allows remote attackers to upload arbitrary files without restrictions in ZeroWdd myblog 1.0. Attackers can potentially upload malicious files like webshells to gain unauthorized access or execute code. Anyone running the vulnerable version of myblog is affected.
💻 Affected Systems
- ZeroWdd myblog
📦 What is this software?
Myblog by Zerowdd
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via webshell upload leading to remote code execution, data theft, and lateral movement within the network.
Likely Case
Unauthorized file upload leading to defacement, data manipulation, or limited code execution depending on server configuration.
If Mitigated
File uploads restricted to authenticated users with proper validation, limiting impact to authorized functionality.
🎯 Exploit Status
Exploit details are publicly disclosed in GitHub issues, making this easy to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch exists. Consider workarounds or migrating to a secure alternative.
🔧 Temporary Workarounds
Disable upload functionality
allRemove or disable the vulnerable upload controller endpoint to prevent exploitation.
Comment out or delete the uploadController.java file and restart the application
Implement file validation
allAdd server-side validation to restrict file types, extensions, and content.
Modify uploadController.java to include validation checks for file type, size, and extension
🧯 If You Can't Patch
- Restrict network access to the application using firewalls or network segmentation.
- Implement web application firewall (WAF) rules to block malicious file upload attempts.
🔍 How to Verify
Check if Vulnerable:
Check if running ZeroWdd myblog version 1.0 and if the upload endpoint is accessible without proper validation.Check Version:
Check application configuration or build files for version information.Verify Fix Applied:
Test file upload functionality with restricted file types; ensure only allowed files are accepted.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to the upload endpoint, especially with suspicious extensions like .jsp, .php, .exe
Network Indicators:
- HTTP POST requests to upload endpoints with unexpected file types
SIEM Query:
source="web_logs" AND (uri="/upload" OR uri="/admin/upload") AND (file_extension="jsp" OR file_extension="php" OR file_extension="exe")