CVE-2024-24000
📋 TL;DR
jshERP v3.3 has an arbitrary file upload vulnerability in the systemConfig/upload interface that allows attackers to upload malicious files to controllable server paths. This affects all systems running the vulnerable version of jshERP, potentially leading to complete system compromise.
💻 Affected Systems
- jshERP
📦 What is this software?
Jsherp by Huaxiaerp
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system takeover, data exfiltration, ransomware deployment, or use as a foothold for lateral movement.
Likely Case
Webshell upload leading to persistent backdoor access, data theft, and further exploitation of the server environment.
If Mitigated
Limited impact if proper file upload validation and web application firewalls are in place.
🎯 Exploit Status
Exploitation requires authentication but is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://github.com/jishenghua/jshERP
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Implement File Upload Validation
allAdd server-side validation to restrict uploaded file types and sanitize file paths.
Restrict Access to Upload Interface
linuxUse web server configuration to restrict access to /jshERP-boot/systemConfig/upload endpoint.
# Apache: <Location /jshERP-boot/systemConfig/upload> Require all denied </Location>
# Nginx: location /jshERP-boot/systemConfig/upload { deny all; }
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with file upload protection rules.
- Monitor and alert on suspicious file upload activities to the jshERP system.
🔍 How to Verify
Check if Vulnerable:
Check if jshERP version is 3.3 and test the /jshERP-boot/systemConfig/upload endpoint with various file types.Check Version:
Check jshERP configuration files or web interface for version information.Verify Fix Applied:
Test file upload functionality with malicious file types to ensure they are rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /jshERP-boot/systemConfig/upload
- Uploads of executable files (e.g., .php, .jsp, .war)
Network Indicators:
- POST requests to /jshERP-boot/systemConfig/upload with suspicious file content
SIEM Query:
source="web_server" AND uri="/jshERP-boot/systemConfig/upload" AND method="POST"