CVE-2024-35556
📋 TL;DR
This CSRF vulnerability in idccms v1.35 allows attackers to trick authenticated administrators into performing unauthorized actions via crafted requests to the /admin/vpsSys_deal.php endpoint. Attackers could modify system settings, add/delete users, or change configurations without the admin's knowledge. Only administrators with access to the admin panel are affected.
💻 Affected Systems
- idccms
📦 What is this software?
Idccms by Idccms
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the CMS installation including administrative account takeover, data manipulation, backdoor installation, and potential server compromise if CMS has elevated privileges.
Likely Case
Unauthorized configuration changes, user account manipulation, or content modification leading to defacement, data loss, or privilege escalation.
If Mitigated
Limited impact with proper CSRF protections, though some risk remains if other vulnerabilities are chained.
🎯 Exploit Status
Exploitation requires tricking an authenticated admin to visit a malicious page. The GitHub reference shows proof-of-concept.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
No official patch available. Implement CSRF protection manually by adding anti-CSRF tokens to /admin/vpsSys_deal.php and validating them on the server side.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd CSRF tokens to admin forms and validate them server-side
Edit /admin/vpsSys_deal.php to include and validate CSRF tokens
Restrict Admin Access
allLimit admin panel access to specific IP addresses or VPN
Add IP restrictions to .htaccess or web server config for /admin/ directory
🧯 If You Can't Patch
- Implement SameSite cookies and CORS restrictions
- Use browser extensions that block CSRF attempts for admin users
🔍 How to Verify
Check if Vulnerable:
Check if /admin/vpsSys_deal.php?mudi=infoSet endpoint accepts POST requests without CSRF token validationCheck Version:
Check CMS version in admin panel or readme filesVerify Fix Applied:
Test that the endpoint now requires and validates CSRF tokens📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /admin/vpsSys_deal.php from different referrers
- Unauthorized configuration changes in admin logs
Network Indicators:
- Requests to admin endpoints with suspicious referrer headers
- CSRF payloads in network traffic
SIEM Query:
source="web_logs" AND uri="/admin/vpsSys_deal.php" AND method="POST" AND referrer NOT CONTAINS "yourdomain.com"