CVE-2023-52072
📋 TL;DR
FlyCms v1.0 contains a Cross-Site Request Forgery (CSRF) vulnerability in the /system/site/userconfig_updagte component. This allows attackers to trick authenticated administrators into performing unauthorized configuration changes. All users running FlyCms v1.0 are affected.
💻 Affected Systems
- FlyCms
📦 What is this software?
Flycms by Flycms Project
⚠️ Risk & Real-World Impact
Worst Case
Attackers could modify site configuration, change administrator credentials, inject malicious code, or compromise the entire CMS installation.
Likely Case
Attackers modify site settings, change user permissions, or inject malicious content that affects visitors.
If Mitigated
With proper CSRF protections, the vulnerability is neutralized and no unauthorized actions can be performed.
🎯 Exploit Status
CSRF attacks are well-understood and easy to implement. Requires the victim to be authenticated as an administrator.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing CSRF protections manually.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd CSRF token validation to the /system/site/userconfig_updagte endpoint
Modify PHP code to include and validate CSRF tokens for POST requests
Restrict Access
allLimit access to the vulnerable endpoint using IP whitelisting or additional authentication
Configure web server (Apache/Nginx) to restrict access to /system/site/userconfig_updagte
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block CSRF attempts
- Require re-authentication for sensitive configuration changes
🔍 How to Verify
Check if Vulnerable:
Check if FlyCms version is 1.0 and the /system/site/userconfig_updagte endpoint exists without CSRF protectionCheck Version:
Check FlyCms configuration files or admin panel for version informationVerify Fix Applied:
Test that POST requests to /system/site/userconfig_updagte require valid CSRF tokens📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /system/site/userconfig_updagte from different sessions
- Configuration changes without corresponding admin login events
Network Indicators:
- HTTP requests to /system/site/userconfig_updagte with Referer headers from external domains
SIEM Query:
source="web_logs" AND uri="/system/site/userconfig_updagte" AND method="POST" AND NOT referer CONTAINS "yourdomain.com"