CVE-2024-4587
📋 TL;DR
This CSRF vulnerability in DedeCMS allows attackers to trick authenticated administrators into performing unintended actions by visiting malicious web pages. It affects DedeCMS 5.7 installations using the vulnerable tpl.php file. The vulnerability is remotely exploitable and public exploit code exists.
💻 Affected Systems
- DedeCMS
📦 What is this software?
Dedecms by Dedecms
⚠️ Risk & Real-World Impact
Worst Case
Attackers could modify website content, create backdoor accounts, or alter system configuration through authenticated administrator sessions.
Likely Case
Attackers would modify templates, inject malicious content, or create unauthorized administrator accounts.
If Mitigated
With proper CSRF protections and administrator awareness, impact would be minimal as attacks require user interaction.
🎯 Exploit Status
Exploit requires social engineering to trick authenticated administrators into visiting malicious pages.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider workarounds or upgrading to a different CMS if vendor remains unresponsive.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd CSRF token validation to tpl.php and related admin functions
Manual code modification required - add token generation and validation
Restrict Access to Admin Interface
linuxLimit admin panel access to specific IP addresses or VPN
# Apache: Order deny,allow
Deny from all
Allow from 192.168.1.0/24
# Nginx: allow 192.168.1.0/24;
deny all;
🧯 If You Can't Patch
- Implement web application firewall with CSRF protection rules
- Educate administrators about phishing risks and require separate browser sessions for admin tasks
🔍 How to Verify
Check if Vulnerable:
Check if /src/dede/tpl.php exists and lacks CSRF token validation in POST requestsCheck Version:
Check DedeCMS version in system configuration or admin panelVerify Fix Applied:
Test that POST requests to tpl.php fail without valid CSRF tokens📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to tpl.php from different referrers
- Unauthorized template modifications in admin logs
Network Indicators:
- HTTP requests to tpl.php with suspicious referrer headers
- Admin session cookies being sent to unexpected domains
SIEM Query:
source="web_logs" AND uri="/src/dede/tpl.php" AND method="POST" AND referrer NOT CONTAINS "yourdomain.com"