CVE-2024-46376
📋 TL;DR
Best House Rental Management System 1.0 contains an arbitrary file upload vulnerability in the update_account() function that allows attackers to upload malicious files to the server. This affects all installations of version 1.0 that have the vulnerable admin_class.php file. Attackers can exploit this to achieve remote code execution or compromise the web server.
💻 Affected Systems
- Best House Rental Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through remote code execution, allowing attackers to install malware, steal data, pivot to internal networks, or use the server for further attacks.
Likely Case
Webshell deployment leading to data theft, defacement, or use as a foothold for lateral movement within the network.
If Mitigated
Limited impact if file uploads are restricted to authenticated admin users only, though privilege escalation remains possible.
🎯 Exploit Status
Exploitation requires admin access to trigger the update_account() function. The vulnerability is in GitHub references with technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Remove or replace the vulnerable system with a secure alternative.
🔧 Temporary Workarounds
Restrict file upload extensions
allModify the update_account() function to only allow specific safe file extensions (like .jpg, .png) and implement file type verification.
Edit rental/admin_class.php to add extension whitelisting and MIME type checking
Implement file upload directory restrictions
linuxConfigure web server to prevent execution of uploaded files in upload directories.
For Apache: Add 'php_flag engine off' to .htaccess in upload directory
For Nginx: location ~* \.php$ { deny all; } in upload directory config
🧯 If You Can't Patch
- Disable or remove the vulnerable update_account() functionality entirely
- Implement web application firewall (WAF) rules to block malicious file uploads
🔍 How to Verify
Check if Vulnerable:
Check if rental/admin_class.php exists and contains the update_account() function without proper file upload validation. Review code for lack of extension/MIME checks.Check Version:
Check system documentation or configuration files for version information. No standard command available.Verify Fix Applied:
Test file upload functionality with malicious files (e.g., .php, .phtml) to confirm they are rejected. Verify server configuration prevents execution in upload directories.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to admin endpoints
- Files with executable extensions (.php, .phtml) in upload directories
- Multiple failed upload attempts
Network Indicators:
- HTTP POST requests to admin endpoints with file uploads
- Unusual outbound connections from the web server
SIEM Query:
source="web_logs" AND (uri="/rental/admin*" AND method="POST" AND file_upload="true")