CVE-2024-48655
📋 TL;DR
CVE-2024-48655 is a server-side JavaScript code injection vulnerability in Total.js CMS v1.0 that allows remote attackers to execute arbitrary code via the func.js file. This enables complete system compromise of affected web servers. Organizations running Total.js CMS v1.0 are affected.
💻 Affected Systems
- Total.js CMS
📦 What is this software?
Total.js by Totaljs
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with attacker gaining full control of the web server, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Remote code execution leading to web server compromise, data theft, and potential ransomware deployment.
If Mitigated
Limited impact if proper network segmentation, WAF rules, and least privilege principles are implemented.
🎯 Exploit Status
Public exploit details available in GitHub issue and Medium article. Attack requires no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://github.com/totaljs/cms/issues/49
Restart Required: Yes
Instructions:
1. Check if running Total.js CMS v1.0. 2. Immediately upgrade to a newer version if available. 3. If no newer version exists, implement workarounds or migrate to alternative CMS.
🔧 Temporary Workarounds
Block func.js access
allRestrict access to the vulnerable func.js file via web server configuration or WAF.
# Apache: RewriteRule ^/func\.js$ - [F,L]
# Nginx: location ~ /func\.js$ { deny all; }
Input validation hardening
allImplement strict input validation and sanitization for all user-controlled parameters.
🧯 If You Can't Patch
- Isolate affected systems in a dedicated network segment with strict egress filtering.
- Implement web application firewall (WAF) rules to block malicious payloads targeting func.js.
🔍 How to Verify
Check if Vulnerable:
Check if Total.js CMS version is 1.0 by examining package.json or application metadata.Check Version:
grep -r "version" package.json | grep -o '"1\.0"'Verify Fix Applied:
Verify func.js file is no longer accessible or has been patched with proper input validation.📡 Detection & Monitoring
Log Indicators:
- Unusual POST/GET requests to func.js
- JavaScript code execution patterns in logs
- Unexpected process spawns from web server
Network Indicators:
- HTTP requests containing malicious JavaScript payloads
- Outbound connections from web server to suspicious IPs
SIEM Query:
source="web_logs" AND (uri="/func.js" OR uri="*func.js*") AND (method="POST" OR method="GET")