CVE-2024-7927
📋 TL;DR
This critical vulnerability in ZZCMS 2023 allows remote attackers to perform path traversal attacks via the skin[] parameter in /admin/class.php?dowhat=modifyclass. This could enable unauthorized file access, modification, or deletion. All ZZCMS 2023 installations with the vulnerable component exposed are affected.
💻 Affected Systems
- ZZCMS
📦 What is this software?
Zzcms by Zzcms
⚠️ Risk & Real-World Impact
Worst Case
Remote attackers could read, modify, or delete arbitrary files on the server, potentially leading to complete system compromise, data theft, or service disruption.
Likely Case
Attackers could access sensitive configuration files, source code, or user data, potentially leading to further exploitation or data breach.
If Mitigated
With proper network segmentation and access controls, impact would be limited to the web application directory only.
🎯 Exploit Status
Exploit details are publicly available. Attack requires access to the admin interface but no authentication bypass is mentioned.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor vendor channels for updates and apply immediately when released.
🔧 Temporary Workarounds
Restrict Admin Access
allBlock external access to /admin/ directory using web server configuration or firewall rules
# Apache: <Location /admin> Require ip 192.168.1.0/24 </Location>
# Nginx: location /admin { deny all; }
Input Validation
allAdd server-side validation to reject path traversal sequences in skin[] parameter
# PHP example: if (strpos($_GET['skin'], '..') !== false) { die('Invalid input'); }
🧯 If You Can't Patch
- Implement strict network segmentation to isolate ZZCMS from critical systems
- Deploy web application firewall (WAF) with path traversal protection rules
🔍 How to Verify
Check if Vulnerable:
Test if /admin/class.php?dowhat=modifyclass&skin[]=../../../../etc/passwd returns sensitive system filesCheck Version:
Check ZZCMS version in admin panel or readme filesVerify Fix Applied:
Verify that path traversal attempts return error messages or are blocked📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /admin/class.php with skin[] parameter containing '..' sequences
- Unusual file access patterns from web process
Network Indicators:
- Multiple failed path traversal attempts
- Requests to sensitive file paths from web application
SIEM Query:
source="web_logs" AND uri="/admin/class.php" AND (param="skin" OR param="skin[]") AND (value=".." OR value="../")