CVE-2024-44818
📋 TL;DR
This is a reflected Cross-Site Scripting (XSS) vulnerability in ZZCMS that allows attackers to inject malicious scripts via the HTTP_Referer header. When exploited, it can lead to session hijacking, credential theft, or redirection to malicious sites. All users running ZZCMS v.2023 and earlier versions are affected.
💻 Affected Systems
- ZZCMS
📦 What is this software?
Zzcms by Zzcms
⚠️ Risk & Real-World Impact
Worst Case
Attacker steals administrator credentials, takes full control of the CMS, defaces website, or installs backdoors for persistent access.
Likely Case
Attacker steals user session cookies, performs actions as authenticated users, or redirects users to phishing sites.
If Mitigated
Limited impact with proper input validation and output encoding; attacker can only execute scripts in victim's browser context.
🎯 Exploit Status
Exploitation requires tricking users into clicking malicious links; public proof-of-concept available in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to latest ZZCMS version if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation for HTTP_Referer
allAdd server-side validation to sanitize or reject malicious HTTP_Referer headers in caina.php
Edit caina.php to add: $referer = filter_var($_SERVER['HTTP_REFERER'], FILTER_SANITIZE_STRING);
Web Application Firewall Rule
allConfigure WAF to block requests with malicious scripts in Referer header
Add WAF rule: Block if HTTP_Referer contains '<script>' or 'javascript:'
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Disable or restrict access to caina.php component if not required
🔍 How to Verify
Check if Vulnerable:
Test by sending a request to caina.php with malicious script in Referer header: curl -H 'Referer: <script>alert(1)</script>' http://target/caina.phpCheck Version:
Check ZZCMS version in admin panel or configuration filesVerify Fix Applied:
Repeat the test; script should not execute and input should be sanitized📡 Detection & Monitoring
Log Indicators:
- HTTP requests to caina.php with suspicious Referer headers containing script tags or javascript
Network Indicators:
- Unusual Referer headers in HTTP traffic to caina.php endpoint
SIEM Query:
source="web_logs" AND uri="/caina.php" AND referer CONTAINS "<script>" OR referer CONTAINS "javascript:"