CVE-2023-51315
📋 TL;DR
PHPJabbers Restaurant Booking System v3.0 contains multiple stored cross-site scripting (XSS) vulnerabilities in several parameters (seat_name, plugin_sms_api_key, plugin_sms_country_code, title, name). Attackers can inject malicious scripts that execute when other users view affected pages, potentially stealing session cookies or performing actions as authenticated users. This affects all installations of version 3.0.
💻 Affected Systems
- PHPJabbers Restaurant Booking System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain full administrative access to the booking system, modify reservations, access customer data, or deploy additional malware.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, potentially compromising user accounts and accessing reservation data.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing exploitation.
🎯 Exploit Status
Exploitation requires authentication to access vulnerable input fields. Public proof-of-concept details are available in Packet Storm references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
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.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation and HTML encoding for all user inputs, especially the vulnerable parameters.
Implement PHP htmlspecialchars() or htmlentities() on all output from affected parameters
Content Security Policy
allImplement a strict Content Security Policy header to prevent execution of inline scripts.
Add header: Content-Security-Policy: script-src 'self'
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in affected parameters
- Restrict access to the booking system admin interface to trusted IP addresses only
🔍 How to Verify
Check if Vulnerable:
Test input fields (seat_name, plugin_sms_api_key, plugin_sms_country_code, title, name) with XSS payloads like <script>alert('XSS')</script> and check if script executes when viewing the stored data.Check Version:
Check application version in admin panel or review source code for version indicatorsVerify Fix Applied:
After implementing fixes, test with same XSS payloads to confirm scripts no longer execute. Check that input is properly encoded in output.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests containing script tags or JavaScript in affected parameter names
- Multiple failed login attempts followed by successful login and parameter manipulation
Network Indicators:
- HTTP requests with script tags in parameter values
- Outbound connections to suspicious domains from the booking system
SIEM Query:
source="web_logs" AND (param_name IN ("seat_name", "plugin_sms_api_key", "plugin_sms_country_code", "title", "name")) AND (param_value CONTAINS "<script>" OR param_value CONTAINS "javascript:")