CVE-2024-27694
📋 TL;DR
FlyCms v1.0 contains a Cross-Site Request Forgery (CSRF) vulnerability in the /system/share/ztree_category_edit endpoint. This allows attackers to trick authenticated users into performing unauthorized actions by visiting a malicious webpage. All users running FlyCms v1.0 with the vulnerable endpoint accessible are affected.
💻 Affected Systems
- FlyCms
📦 What is this software?
Flycms by Flycms Project
⚠️ Risk & Real-World Impact
Worst Case
Attackers could modify category structures, delete content, or perform administrative actions leading to data loss or site defacement.
Likely Case
Unauthorized modifications to category trees, potentially disrupting site navigation and content organization.
If Mitigated
Limited impact with proper CSRF protections and user awareness training.
🎯 Exploit Status
CSRF attacks are well-understood and easy to implement with basic web development knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided in references
Restart Required: No
Instructions:
No official patch available. Consider implementing CSRF tokens or upgrading if newer versions exist.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd CSRF tokens to forms and validate them server-side for the affected endpoint.
Modify /system/share/ztree_category_edit to include and validate CSRF tokens
Restrict Access
allLimit access to the vulnerable endpoint using IP whitelisting or authentication enhancements.
Configure web server (e.g., Apache .htaccess or Nginx location block) to restrict /system/share/ztree_category_edit
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block CSRF attempts
- Educate users about CSRF risks and safe browsing practices
🔍 How to Verify
Check if Vulnerable:
Check if FlyCms v1.0 is installed and if /system/share/ztree_category_edit endpoint exists without CSRF protection.Check Version:
Check FlyCms configuration files or admin panel for version information.Verify Fix Applied:
Test the endpoint with a CSRF attack simulation tool to confirm tokens are required and validated.📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /system/share/ztree_category_edit from different referrers
- Unauthorized category modifications in audit logs
Network Indicators:
- HTTP requests to vulnerable endpoint without CSRF tokens
- Suspicious referrer headers in requests
SIEM Query:
source="web_server" AND (url="/system/share/ztree_category_edit" AND method="POST") AND NOT csrf_token=*