CVE-2024-28675
📋 TL;DR
DedeCMS v5.7 contains a CSRF vulnerability in the /dede/diy_edit.php endpoint that allows attackers to trick authenticated administrators into performing unauthorized actions. This affects all DedeCMS v5.7 installations with the default configuration. Attackers can modify content, change settings, or perform other administrative actions without the victim's knowledge.
💻 Affected Systems
- DedeCMS
📦 What is this software?
Dedecms by Dedecms
⚠️ Risk & Real-World Impact
Worst Case
Complete site takeover through administrative account compromise, content defacement, or injection of malicious code leading to data theft.
Likely Case
Unauthorized content modification, configuration changes, or injection of SEO spam/backdoors through tricked administrators.
If Mitigated
Limited impact with proper CSRF protections, admin awareness, and network segmentation.
🎯 Exploit Status
Exploitation requires tricking an authenticated administrator to visit a malicious page while logged in.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Check for official patch from DedeCMS developers
2. Apply patch if available
3. Verify fix by testing CSRF protection on /dede/diy_edit.php
🔧 Temporary Workarounds
Add CSRF Token Protection
allImplement CSRF tokens in the diy_edit.php form and validate them on submission
Manual code modification required - add token generation and validation
Restrict Access to Admin Interface
allLimit access to /dede/ directory to trusted IP addresses only
# 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 strict SameSite cookie policies and require re-authentication for sensitive actions
- Use web application firewall (WAF) rules to detect and block CSRF attempts
🔍 How to Verify
Check if Vulnerable:
Test if /dede/diy_edit.php accepts POST requests without CSRF tokens when authenticatedCheck Version:
Check DedeCMS version in system configuration or /data/common.inc.phpVerify Fix Applied:
Verify CSRF tokens are required and validated for all POST requests to /dede/diy_edit.php📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /dede/diy_edit.php from different referrers
- Unauthorized modifications from admin accounts
Network Indicators:
- HTTP requests to /dede/diy_edit.php with suspicious referrer headers
- Cross-origin requests to admin endpoints
SIEM Query:
source="web_logs" AND uri="/dede/diy_edit.php" AND method="POST" AND referrer NOT CONTAINS "your-domain.com"