CVE-2024-52680
📋 TL;DR
EyouCMS 1.6.7 contains a cross-site scripting vulnerability in the admin system configuration interface that allows attackers to inject malicious scripts. This affects administrators who access the vulnerable /login.php page with specific parameters. Attackers could steal session cookies or perform actions on behalf of authenticated users.
💻 Affected Systems
- EyouCMS
📦 What is this software?
Eyoucms by Eyoucms
⚠️ Risk & Real-World Impact
Worst Case
Administrator account compromise leading to full system takeover, data theft, or website defacement through stolen session cookies or credential harvesting.
Likely Case
Session hijacking of admin users, credential theft, or limited privilege escalation within the CMS admin panel.
If Mitigated
Minimal impact if proper input validation and output encoding are implemented, or if admin access is restricted to trusted networks.
🎯 Exploit Status
Exploitation requires admin access or tricking an admin to visit a malicious link. The vulnerability is in parameter handling that lacks proper input sanitization.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.6.8 or later
Vendor Advisory: http://www.eyoucms.com
Restart Required: No
Instructions:
1. Backup your current installation. 2. Download the latest version from the official website. 3. Replace affected files, particularly /login.php and related system files. 4. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side input validation to sanitize all parameters in the vulnerable endpoint
Modify /login.php to add htmlspecialchars() or similar filtering for all GET/POST parameters
Access Restriction
allRestrict access to admin interface to trusted IP addresses only
Add .htaccess rules or web server configuration to limit /login.php?m=admin access
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in the vulnerable parameters
- Disable or restrict the vulnerable endpoint if not required for functionality
🔍 How to Verify
Check if Vulnerable:
Test the endpoint /login.php?m=admin&c=System&a=web&lang=cn with XSS payloads in parameters and check if scripts executeCheck Version:
Check CMS version in admin panel or via /eyou/config/version.phpVerify Fix Applied:
After patching, test the same endpoint with XSS payloads and verify scripts are properly encoded or blocked📡 Detection & Monitoring
Log Indicators:
- Unusual parameter values in /login.php access logs containing script tags or JavaScript code
- Multiple failed login attempts followed by successful admin access
Network Indicators:
- HTTP requests to /login.php with suspicious parameter values containing script tags or encoded payloads
SIEM Query:
source="web_access.log" AND uri="/login.php" AND (param="<script>" OR param="javascript:" OR param="onerror=" OR param="onload=")