CVE-2024-7799
📋 TL;DR
CVE-2024-7799 is an improper authorization vulnerability in SourceCodester Simple Online Bidding System 1.0 that allows unauthorized access to admin functionality. Attackers can remotely exploit the /simple-online-bidding-system/bidding/admin/users.php file to bypass authentication controls. This affects all deployments of Simple Online Bidding System 1.0.
💻 Affected Systems
- SourceCodester Simple Online Bidding System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to create, modify, or delete user accounts, manipulate bidding data, and potentially gain full administrative control of the application.
Likely Case
Unauthorized access to administrative functions leading to user account manipulation, data tampering, and privilege escalation within the bidding system.
If Mitigated
Limited impact with proper network segmentation, strong authentication controls, and monitoring that detects unauthorized access attempts.
🎯 Exploit Status
Exploit details are publicly available on GitHub. The vulnerability requires minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds and monitoring.
🔧 Temporary Workarounds
Access Restriction via Web Server
allRestrict access to the vulnerable admin/users.php file using web server configuration
# Apache: Add to .htaccess or virtual host config
<Files "users.php">
Require all denied
</Files>
# Nginx: Add to server block
location ~ /admin/users\.php$ {
deny all;
}
Authentication Enforcement
allAdd authentication checks at the beginning of users.php file
<?php
session_start();
if (!isset($_SESSION['admin_logged_in']) || $_SESSION['admin_logged_in'] !== true) {
header('HTTP/1.0 403 Forbidden');
die('Access denied');
}
?>
🧯 If You Can't Patch
- Implement network segmentation to isolate the bidding system from critical infrastructure
- Deploy a web application firewall (WAF) with rules to detect and block unauthorized access to admin endpoints
🔍 How to Verify
Check if Vulnerable:
Attempt to access /simple-online-bidding-system/bidding/admin/users.php without authentication. If accessible, system is vulnerable.Check Version:
Check application files or documentation for version information. Look for version 1.0 in source code or configuration files.Verify Fix Applied:
After implementing workarounds, verify that unauthorized access to /simple-online-bidding-system/bidding/admin/users.php returns 403 Forbidden or redirects to login.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /admin/users.php
- 403 Forbidden errors for admin endpoints
- Unusual user creation/modification activity
Network Indicators:
- HTTP requests to /simple-online-bidding-system/bidding/admin/users.php without preceding authentication requests
- Unusual traffic patterns to admin endpoints
SIEM Query:
source="web_server_logs" AND (uri="/simple-online-bidding-system/bidding/admin/users.php" OR uri="/admin/users.php") AND NOT (status=403 OR status=401)