CVE-2023-51337
📋 TL;DR
PHPJabbers Event Ticketing System v1.0 contains a reflected cross-site scripting vulnerability in the 'lid' parameter of the index page. This allows attackers to inject malicious scripts that execute in victims' browsers when they click specially crafted links. Organizations using this specific version of the event ticketing system are affected.
💻 Affected Systems
- PHPJabbers Event Ticketing System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, perform actions on behalf of authenticated users, or deliver malware payloads.
Likely Case
Session hijacking leading to unauthorized access to ticketing system functions, potential data theft, or defacement of the application interface.
If Mitigated
Limited impact with proper input validation and output encoding, though the vulnerability still exists in the codebase.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link). Public exploit details available in Packet Storm references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not found
Restart Required: No
Instructions:
1. Check vendor website for updated version. 2. If available, backup current installation. 3. Replace vulnerable files with patched version. 4. Test functionality.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to sanitize 'lid' parameter input
Modify PHP code to filter/sanitize $_GET['lid'] parameter using htmlspecialchars() or filter_var()
Web Application Firewall Rule
allBlock malicious XSS payloads in 'lid' parameter
Add WAF rule to detect and block script tags and JavaScript in 'lid' parameter
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Restrict access to the application using network controls or authentication
🔍 How to Verify
Check if Vulnerable:
Test by accessing index page with payload in lid parameter: /index.php?lid=<script>alert('XSS')</script>Check Version:
Check PHPJabbers version in admin panel or readme filesVerify Fix Applied:
Test same payload; script should not execute and input should be properly encoded in output📡 Detection & Monitoring
Log Indicators:
- HTTP requests with script tags or JavaScript in 'lid' parameter
- Unusual parameter values in access logs
Network Indicators:
- HTTP GET requests containing malicious scripts in query parameters
SIEM Query:
source="web_logs" AND uri_query="*lid=*script*" OR uri_query="*lid=*javascript:*"