CVE-2024-44759
📋 TL;DR
This vulnerability allows attackers to download arbitrary files from NUS-M9 ERP Management Software v3.0.0 servers by exploiting an insecure file download endpoint. Attackers can access sensitive system files, configuration data, and potentially credentials. Organizations running this specific ERP software version are affected.
💻 Affected Systems
- NUS-M9 ERP Management Software
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through retrieval of sensitive files like configuration files, database credentials, SSH keys, or system files leading to lateral movement and data exfiltration.
Likely Case
Unauthorized access to sensitive business data, configuration files, and potentially user information stored on the server.
If Mitigated
Limited impact if proper network segmentation, file system permissions, and access controls prevent access to critical system files.
🎯 Exploit Status
The exploit requires crafting a simple HTTP request to the vulnerable endpoint. Public proof-of-concept code is available in the referenced GitHub repositories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch is available. Check with the vendor for updates or consider workarounds.
🔧 Temporary Workarounds
Block Vulnerable Endpoint
allUse web application firewall or reverse proxy to block requests to /Doc/DownloadFile endpoint
# Example nginx location block
location /Doc/DownloadFile { deny all; }
# Example Apache .htaccess
RedirectMatch 403 ^/Doc/DownloadFile
Restrict File System Access
allConfigure the application to run with minimal file system permissions
# Linux: Run as non-root user with restricted home directory
chown -R appuser:appgroup /path/to/m9erp
# Windows: Configure application pool identity with limited privileges
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the ERP system from sensitive networks
- Deploy web application firewall with rules to detect and block file download exploitation patterns
🔍 How to Verify
Check if Vulnerable:
Attempt to access http://[target]/Doc/DownloadFile?file=../../etc/passwd (Linux) or similar path traversal to test for arbitrary file download.Check Version:
Check application version in web interface or configuration files. Typically found in /about or /version endpoints.Verify Fix Applied:
Test the same exploitation attempt after applying workarounds to confirm the endpoint is blocked or restricted.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /Doc/DownloadFile with path traversal patterns (../)
- Unusual file access patterns from web application user
- Large number of download requests from single IP
Network Indicators:
- HTTP GET requests containing ../ patterns in URL parameters
- Unusual outbound traffic patterns after exploitation
SIEM Query:
source="web_logs" AND url="*Doc/DownloadFile*" AND (url="*../*" OR url="*..\\*" OR url="*%2e%2e%2f*")