CVE-2023-41505
📋 TL;DR
This vulnerability allows attackers to upload malicious PHP files through the student profile picture upload function in Student Enrollment In PHP v1.0, leading to remote code execution. Any organization using this software is affected, potentially allowing complete system compromise.
💻 Affected Systems
- Student Enrollment In PHP
📦 What is this software?
Student Enrollment by Code Projects
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the web server, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Webshell deployment leading to data theft, defacement, or use as part of a botnet.
If Mitigated
Attack blocked at web application firewall level with no file execution possible.
🎯 Exploit Status
Simple file upload bypass with readily available exploit code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider replacing with alternative software or implementing workarounds.
🔧 Temporary Workarounds
File Upload Restriction
allRestrict file uploads to specific extensions and implement server-side validation
Web Server Configuration
linuxConfigure web server to prevent execution of uploaded files in upload directory
For Apache: Add 'php_flag engine off' to .htaccess in upload directory
For Nginx: location ~* /uploads/.*\.php$ { deny all; }
🧯 If You Can't Patch
- Disable student profile picture upload functionality completely
- Implement web application firewall with file upload protection rules
🔍 How to Verify
Check if Vulnerable:
Attempt to upload a PHP file through the student profile picture upload featureCheck Version:
Check software version in admin panel or configuration filesVerify Fix Applied:
Test that PHP files cannot be uploaded or executed from upload directory📡 Detection & Monitoring
Log Indicators:
- PHP file uploads to upload directory
- Unusual file extensions in upload requests
- POST requests to upload endpoint with PHP content
Network Indicators:
- HTTP POST requests with PHP file content to upload endpoint
- Subsequent requests to uploaded PHP files
SIEM Query:
source="web_logs" AND (uri="/upload.php" OR uri="/upload/" OR uri="/student/upload") AND (file_extension="php" OR content_type="application/x-php")