CVE-2024-8782
📋 TL;DR
This critical vulnerability in JFinalCMS allows remote attackers to perform path traversal attacks via the 'name' parameter in the delete function of the admin template editor. Attackers can delete arbitrary files on the server by manipulating directory traversal sequences. All JFinalCMS installations up to version 1.0 are affected.
💻 Affected Systems
- JFinalCMS
📦 What is this software?
Jfinalcms by Heyewei
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through deletion of critical system files, leading to denial of service, data loss, or potential privilege escalation if system files are manipulated.
Likely Case
Website defacement, data deletion, or service disruption through deletion of web application files and templates.
If Mitigated
Limited impact if proper file permissions and web application firewalls block traversal attempts.
🎯 Exploit Status
Exploit requires authentication to the admin panel. Public proof-of-concept demonstrates file deletion via path traversal.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider migrating to alternative CMS or implementing workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize the 'name' parameter and block directory traversal sequences
Modify /admin/template/edit controller to validate and sanitize input parameters
Web Application Firewall Rules
allConfigure WAF to block requests containing path traversal patterns
Add WAF rule to block requests with '../', '..\', or similar traversal sequences
🧯 If You Can't Patch
- Restrict admin panel access to trusted IP addresses only
- Implement strict file permissions to limit what files the web server user can delete
🔍 How to Verify
Check if Vulnerable:
Check if JFinalCMS version is 1.0 or earlier by examining version files or admin panelCheck Version:
Check version.txt or similar files in JFinalCMS installation directoryVerify Fix Applied:
Test the delete function with traversal sequences like '../../etc/passwd' to confirm they are blocked📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /admin/template/edit with 'name' parameter containing '../' or similar sequences
- File deletion errors in web server logs
Network Indicators:
- POST requests to admin endpoints with traversal payloads
SIEM Query:
web.url:*admin/template/edit* AND (web.param.name:*../* OR web.param.name:*..\*)