CVE-2023-51305
📋 TL;DR
PHPJabbers Car Park Booking System v3.0 contains multiple stored cross-site scripting vulnerabilities in various parameters. Attackers can inject malicious scripts that execute in users' browsers when viewing affected pages. This affects all users of the vulnerable version who access the booking system.
💻 Affected Systems
- PHPJabbers Car Park Booking System
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack user sessions, deface the website, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Attackers inject malicious scripts to steal user session cookies or credentials, enabling account takeover and unauthorized access to the booking system.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized, preventing execution in user browsers.
🎯 Exploit Status
Exploitation requires authentication to access vulnerable parameters. Public proof-of-concept demonstrates injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Check vendor website for security updates. 2. If patch available, download and apply following vendor instructions. 3. Test functionality after patching.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement server-side validation and HTML encoding for all user inputs before storage and display.
Not applicable - requires code modifications
Content Security Policy
allImplement CSP headers to restrict script execution sources.
Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Header set X-Content-Type-Options "nosniff"
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Restrict access to vulnerable system using network segmentation and authentication controls
🔍 How to Verify
Check if Vulnerable:
Test input fields (name, plugin_sms_api_key, plugin_sms_country_code, title) with XSS payloads like <script>alert('XSS')</script> and check if script executes when viewing stored data.Check Version:
Check system documentation or admin panel for version information. Typically found in README files or system configuration.Verify Fix Applied:
After implementing fixes, test with same XSS payloads to confirm scripts are properly encoded and don't execute.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests containing script tags or JavaScript code to vulnerable parameters
- Multiple failed login attempts followed by parameter manipulation
Network Indicators:
- HTTP requests with script tags in parameter values
- Unusual outbound connections from user browsers after visiting booking pages
SIEM Query:
source="web_server" AND (http_method="POST" AND (uri_path="/booking/" OR uri_path="/admin/") AND (param_value CONTAINS "<script>" OR param_value CONTAINS "javascript:"))