CVE-2020-18648
📋 TL;DR
This CSRF vulnerability in JuQingCMS v1.0 allows attackers to trick authenticated administrators into performing unauthorized actions, specifically creating new administrator accounts. It affects all installations of JuQingCMS v1.0 with the default configuration. Attackers can exploit this remotely to gain administrative privileges.
💻 Affected Systems
- JuQingCMS
📦 What is this software?
Juqingcms by Juqingcms
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the CMS installation with attacker gaining administrative access, allowing content manipulation, data theft, or further system compromise.
Likely Case
Unauthorized administrator account creation leading to persistent backdoor access and potential website defacement or data exfiltration.
If Mitigated
No impact if proper CSRF protections are implemented or if the vulnerability is patched.
🎯 Exploit Status
Exploitation requires tricking an authenticated administrator into visiting a malicious page while logged in.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
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 administrator add functionality in admin/index.php
Edit admin/index.php to include CSRF token generation and validation
Restrict Admin Access
allLimit access to the admin interface to trusted IP addresses only
Add IP whitelisting to .htaccess or web server configuration for /admin/ directory
🧯 If You Can't Patch
- Implement web application firewall rules to detect and block CSRF attempts
- Require re-authentication for sensitive administrative actions like adding new users
🔍 How to Verify
Check if Vulnerable:
Check if JuQingCMS version is 1.0 and if admin/index.php?c=administrator&a=add endpoint lacks CSRF protectionCheck Version:
Check CMS version in configuration files or admin panelVerify Fix Applied:
Test that CSRF tokens are required and validated when accessing the administrator add functionality📡 Detection & Monitoring
Log Indicators:
- Multiple administrator account creation attempts from different IPs
- POST requests to admin/index.php?c=administrator&a=add without referrer validation
Network Indicators:
- HTTP requests to the vulnerable endpoint with suspicious referrers or missing CSRF tokens
SIEM Query:
source="web_logs" AND uri="/admin/index.php" AND query="c=administrator&a=add" AND method="POST"