CVE-2024-57428
📋 TL;DR
A stored cross-site scripting vulnerability in PHPJabbers Cinema Booking System v2.0 allows attackers to inject malicious JavaScript through file upload fields and seat configuration inputs. This affects all users of the vulnerable version, potentially compromising anyone who accesses the booking system interface. The injected scripts persist in the system and execute when users view affected pages.
💻 Affected Systems
- PHPJabbers Cinema Booking System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of admin accounts leading to full system takeover, data theft, malware distribution to all users, and credential harvesting from all visitors.
Likely Case
Session hijacking of admin users, phishing attacks against customers, defacement of booking pages, and potential credential theft.
If Mitigated
Limited impact with proper input validation and output encoding, potentially only affecting users with specific roles or configurations.
🎯 Exploit Status
Exploitation requires authenticated access to upload functionality or seat configuration. Public proof-of-concept demonstrates the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.phpjabbers.com/cinema-booking-system/
Restart Required: No
Instructions:
1. Check vendor website for security updates
2. If patch available, download and apply according to vendor instructions
3. Test functionality after patching
4. Monitor for any issues
🔧 Temporary Workarounds
Input Sanitization Implementation
allAdd server-side validation and sanitization for all user inputs, especially file upload fields and seat configuration parameters.
Implement PHP filter_var() with FILTER_SANITIZE_STRING for all user inputs
Use htmlspecialchars() for output encoding
File Upload Restrictions
allRestrict file uploads to specific file types and implement server-side validation of uploaded content.
Modify upload handlers to check file MIME types and extensions
Implement file content scanning
🧯 If You Can't Patch
- Disable file upload functionality completely if not essential
- Implement web application firewall (WAF) rules to block XSS payloads in file uploads and form submissions
🔍 How to Verify
Check if Vulnerable:
Test file upload fields (event_img, seat_maps) and seat configuration inputs with XSS payloads like <script>alert('XSS')</script> and check if they execute when viewing uploaded content.Check Version:
Check system configuration files or admin panel for version information, typically in includes/config.inc.php or similar.Verify Fix Applied:
Attempt the same XSS payloads after implementing fixes - they should be sanitized and not execute. Check that uploaded files are properly validated.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with script-like content
- Multiple failed upload attempts with suspicious filenames
- Admin panel access from unexpected locations
Network Indicators:
- HTTP POST requests to upload endpoints with script tags in parameters
- Unusual outbound connections from the booking system
SIEM Query:
source="web_server_logs" AND (uri_path="*upload*" OR uri_path="*pjActionCreate*") AND (request_body CONTAINS "<script>" OR request_body CONTAINS "javascript:")