CVE-2024-33989
📋 TL;DR
This is a Cross-Site Scripting (XSS) vulnerability in School Event Management System version 1.0 that allows attackers to inject malicious JavaScript via the 'eventdate' and 'events' parameters. When exploited, it can partially hijack authenticated user sessions. Organizations using this specific version of the software are affected.
💻 Affected Systems
- School Event Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, data theft, or malware deployment through session hijacking of administrative users.
Likely Case
Session hijacking leading to unauthorized access to user accounts and potential data exposure.
If Mitigated
Limited impact with proper input validation and output encoding in place.
🎯 Exploit Status
Exploitation requires sending crafted payloads to authenticated users via vulnerable parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-janobe-products
Restart Required: No
Instructions:
1. Check vendor advisory for updates. 2. Apply any available patches. 3. Validate input sanitization in affected files.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement proper input validation and output encoding for 'eventdate' and 'events' parameters.
Modify port/event_print.php to sanitize user inputs using htmlspecialchars() or similar functions
Web Application Firewall Rules
allDeploy WAF rules to block XSS payloads targeting the vulnerable parameters.
Configure WAF to filter malicious scripts in 'eventdate' and 'events' parameters
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Restrict access to the vulnerable endpoint using network controls or authentication
🔍 How to Verify
Check if Vulnerable:
Test the 'port/event_print.php' endpoint with XSS payloads in 'eventdate' and 'events' parameters.Check Version:
Check software version in admin panel or configuration filesVerify Fix Applied:
Verify that input sanitization prevents script execution in the affected parameters.📡 Detection & Monitoring
Log Indicators:
- Unusual parameter values containing script tags in access logs
- Multiple failed XSS attempts
Network Indicators:
- HTTP requests with JavaScript payloads in 'eventdate' or 'events' parameters
SIEM Query:
source="web_logs" AND (uri="*event_print.php*" AND (param="*<script>*" OR param="*javascript:*"))