CVE-2024-4593
📋 TL;DR
This vulnerability in DedeCMS 5.7 allows attackers to perform cross-site request forgery (CSRF) attacks via the /src/dede/sys_multiserv.php file. Attackers can trick authenticated users into performing unintended actions on the CMS. All DedeCMS 5.7 installations using the vulnerable component are affected.
💻 Affected Systems
- DedeCMS
📦 What is this software?
Dedecms by Dedecms
⚠️ Risk & Real-World Impact
Worst Case
Attackers could trick administrators into changing system settings, creating new admin accounts, or modifying content, potentially leading to complete system compromise.
Likely Case
Attackers trick users into performing actions like changing their own passwords, posting unauthorized content, or modifying limited settings.
If Mitigated
With proper CSRF protections and user awareness, impact is minimal as attacks require user interaction and authentication.
🎯 Exploit Status
Exploit requires user interaction and authentication. Public exploit details available in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor did not respond to disclosure. Consider workarounds or alternative CMS solutions.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to all forms and validate them server-side
Manual code modification required - add unique tokens to forms and validate on submission
Restrict Access to sys_multiserv.php
linuxBlock or restrict access to the vulnerable file
# Apache: RewriteRule ^src/dede/sys_multiserv\.php$ - [F,L]
# Nginx: location ~ /src/dede/sys_multiserv\.php { 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 patterns
🔍 How to Verify
Check if Vulnerable:
Check if /src/dede/sys_multiserv.php exists and is accessible without CSRF protectionCheck Version:
Check DedeCMS version in admin panel or look for version files in installationVerify Fix Applied:
Test that forms require and validate CSRF tokens, or that sys_multiserv.php is inaccessible📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to sys_multiserv.php from different referrers
- Unusual administrative actions from unexpected sources
Network Indicators:
- Requests to sys_multiserv.php with suspicious referrer headers
- CSRF attack patterns in web traffic
SIEM Query:
web.url:*sys_multiserv.php AND (web.method:POST OR suspicious.referrer)