CVE-2024-40480
📋 TL;DR
This Broken Access Control vulnerability in Kashipara Online Exam System v1.0 allows unauthenticated remote attackers to directly access administrator functions via /admin/update.php and /admin/dashboard.php URLs. Attackers can view the admin dashboard and delete valid user accounts without any authentication. All deployments of this specific software version are affected.
💻 Affected Systems
- Kashipara Online Exam System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where attackers delete all user accounts, disrupt exam operations, and potentially gain administrative privileges to modify system data.
Likely Case
Unauthorized access to admin dashboard leading to user account deletion, exam data manipulation, and system disruption.
If Mitigated
Minimal impact with proper authentication and authorization controls preventing unauthorized access to admin endpoints.
🎯 Exploit Status
Exploitation requires only direct URL access with no authentication or special tools needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider implementing proper authentication checks in the affected PHP files or migrating to a different exam system.
🔧 Temporary Workarounds
Implement Authentication Middleware
allAdd authentication checks to /admin/update.php and /admin/dashboard.php files to verify user is logged in as administrator
Edit the PHP files to include session validation: if(!isset($_SESSION['admin_logged_in']) || $_SESSION['admin_logged_in'] !== true) { header('Location: login.php'); exit(); }
Web Server Access Control
allUse web server configuration to restrict access to /admin/ directory
For Apache: Add to .htaccess: Require valid-user
For Nginx: location /admin/ { auth_basic "Admin Area"; auth_basic_user_file /path/to/.htpasswd; }
🧯 If You Can't Patch
- Implement network-level access controls to restrict /admin/ URLs to authorized IP addresses only
- Deploy a Web Application Firewall (WAF) with rules to block unauthenticated access to admin endpoints
🔍 How to Verify
Check if Vulnerable:
Attempt to access http://[target]/admin/dashboard.php and http://[target]/admin/update.php without authentication. If accessible, system is vulnerable.Check Version:
Check the software version in the application interface or source code filesVerify Fix Applied:
After implementing fixes, verify that unauthenticated access to both URLs returns authentication error or redirects to login page.📡 Detection & Monitoring
Log Indicators:
- HTTP 200 responses to /admin/dashboard.php or /admin/update.php from unauthenticated IPs
- User deletion actions from non-admin IP addresses
Network Indicators:
- Unusual traffic patterns to admin endpoints from external IPs
- Burst of DELETE or POST requests to user management endpoints
SIEM Query:
source="web_server" AND (url="/admin/dashboard.php" OR url="/admin/update.php") AND response_code=200 AND NOT user_agent="admin_browser"