CVE-2024-54918
📋 TL;DR
Kashipara E-learning Management System v1.0 contains a remote code execution vulnerability in the teacher_avatar.php file upload functionality. Attackers can upload malicious files to execute arbitrary code on the server. All systems running this specific version are affected.
💻 Affected Systems
- Kashipara E-learning Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, steal data, install malware, or pivot to other systems.
Likely Case
Attackers gain shell access to the web server, potentially accessing sensitive student/teacher data and modifying system files.
If Mitigated
File uploads are properly validated and restricted, preventing execution of malicious files.
🎯 Exploit Status
Exploit requires teacher-level access. The GitHub reference contains detailed exploitation steps.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Restrict File Upload Types
allImplement strict file type validation for avatar uploads to only allow image formats (jpg, png, gif).
Modify teacher_avatar.php to include: $allowed_types = ['image/jpeg', 'image/png', 'image/gif']; if(!in_array($_FILES['avatar']['type'], $allowed_types)) { die('Invalid file type'); }
Disable teacher_avatar.php
allTemporarily disable the vulnerable endpoint until a proper fix is implemented.
Rename teacher_avatar.php to teacher_avatar.php.disabled or add exit(); at the beginning of the file
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious file uploads to teacher_avatar.php
- Restrict access to teacher_avatar.php endpoint using IP whitelisting or authentication requirements
🔍 How to Verify
Check if Vulnerable:
Check if teacher_avatar.php exists and accepts file uploads without proper validation. Test by attempting to upload a PHP file.Check Version:
Check system documentation or configuration files for version information. Look for version indicators in source code or admin panels.Verify Fix Applied:
Attempt to upload a PHP file to teacher_avatar.php - it should be rejected. Verify only image files are accepted.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to teacher_avatar.php
- PHP file uploads in web server logs
- Multiple failed upload attempts
Network Indicators:
- POST requests to teacher_avatar.php with file uploads
- Unusual outbound connections from web server
SIEM Query:
source="web_server" AND uri="/teacher_avatar.php" AND method="POST" AND file_extension="php"