CVE-2023-51306
📋 TL;DR
PHPJabbers Event Ticketing System v1.0 contains stored cross-site scripting vulnerabilities in the 'name' and 'title' parameters. Attackers can inject malicious scripts that execute when users view affected pages, potentially stealing session cookies or performing actions as authenticated users. Organizations using this specific version are affected.
💻 Affected Systems
- PHPJabbers Event Ticketing System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain full administrative access to the ticketing system, manipulate events/tickets, or redirect users to malicious sites.
Likely Case
Attackers inject malicious scripts to steal user session cookies or credentials, potentially compromising user accounts and accessing sensitive ticketing data.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized, preventing execution while maintaining system functionality.
🎯 Exploit Status
Exploit details and proof-of-concept are publicly available; requires authentication to inject payloads but not to trigger execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not found
Restart Required: No
Instructions:
1. Check vendor website for updated version
2. If update available, backup current installation
3. Replace vulnerable files with patched versions
4. Test functionality after update
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation and HTML encoding for 'name' and 'title' parameters
Manual code modification required - no single command
Content Security Policy
allImplement CSP headers to restrict script execution sources
Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to .htaccess or web server configuration
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in 'name' and 'title' parameters
- Restrict access to the ticketing system to trusted users only and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Test by submitting HTML/JavaScript payloads in 'name' and 'title' fields and checking if they execute when viewedCheck Version:
Check version in admin panel or read version.txt/README files in installation directoryVerify Fix Applied:
Test with same payloads; they should be properly encoded/escaped in output without executing📡 Detection & Monitoring
Log Indicators:
- Unusual HTML/JavaScript patterns in 'name' or 'title' parameter logs
- Multiple failed login attempts followed by parameter manipulation
Network Indicators:
- HTTP requests containing script tags or JavaScript in 'name'/'title' parameters
- Outbound connections to suspicious domains after viewing ticketing pages
SIEM Query:
web.url:* AND (web.param.name:*script* OR web.param.title:*script* OR web.param.name:*javascript* OR web.param.title:*javascript*)