CVE-2020-28072
📋 TL;DR
CVE-2020-28072 is a remote code execution vulnerability in DourceCodester Alumni Management System 1.0. Authenticated attackers can upload malicious files via gallery.php and execute arbitrary code on the server. This affects all installations of version 1.0 of this software.
💻 Affected Systems
- DourceCodester Alumni Management System
📦 What is this software?
Alumni Management System by Alumni Management System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attacker to execute arbitrary commands, steal data, install backdoors, pivot to other systems, and maintain persistent access.
Likely Case
Webshell installation leading to data theft, defacement, or use as part of a botnet.
If Mitigated
Limited impact with proper file upload restrictions and web application firewalls in place.
🎯 Exploit Status
Exploit code is publicly available on Packet Storm Security. Attack requires valid user credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Restrict File Uploads
allImplement strict file upload validation including file type checking, size limits, and renaming uploaded files.
Disable gallery.php
linuxTemporarily disable or restrict access to the vulnerable gallery.php page.
mv gallery.php gallery.php.disabled
chmod 000 gallery.php
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious file uploads
- Restrict network access to the application and implement strict authentication controls
🔍 How to Verify
Check if Vulnerable:
Check if gallery.php exists and allows file uploads without proper validation. Test with harmless file upload attempts.Check Version:
Check application version in admin panel or configuration files.Verify Fix Applied:
Attempt to upload a malicious file and verify it's blocked or properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to gallery.php
- POST requests with file uploads to gallery.php
- Execution of unexpected PHP files
Network Indicators:
- HTTP POST requests to gallery.php with file uploads
- Unusual outbound connections from web server
SIEM Query:
source="web_logs" AND (uri="/gallery.php" AND method="POST" AND size>100000) OR (process="php" AND parent="web_server" AND cmdline="*malicious*"))