CVE-2023-47279
📋 TL;DR
Delta Electronics InfraSuite Device Master v1.0.7 contains a path traversal vulnerability (CWE-22) that allows unauthenticated attackers to access sensitive files via specially crafted UDP packets. This can lead to disclosure of user information, plaintext credentials, or enable NTLM relaying attacks. Organizations using this industrial control system software are affected.
💻 Affected Systems
- Delta Electronics InfraSuite Device Master
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through credential theft, lateral movement within OT/IT networks, and potential disruption of industrial operations.
Likely Case
Unauthorized access to sensitive configuration files, user credentials, and system information leading to further reconnaissance and targeted attacks.
If Mitigated
Limited information disclosure with no direct path to system compromise if proper network segmentation and monitoring are in place.
🎯 Exploit Status
Single UDP packet exploitation makes this trivial to weaponize. CISA advisory indicates active exploitation is likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.0.8 or later
Vendor Advisory: https://www.deltaww.com/en-US/Services/DownloadCenter
Restart Required: Yes
Instructions:
1. Download latest version from Delta Electronics support portal. 2. Backup configuration. 3. Install update. 4. Restart system. 5. Verify version is v1.0.8+.
🔧 Temporary Workarounds
Network Segmentation
allIsolate InfraSuite Device Master systems from untrusted networks using firewalls.
UDP Port Restriction
allBlock UDP traffic to InfraSuite Device Master except from authorized management systems.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems
- Deploy intrusion detection systems to monitor for UDP-based exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check if InfraSuite Device Master v1.0.7 is installed and listening on UDP ports. Use network scanning tools to identify vulnerable instances.Check Version:
Check application interface or installed programs list for version information.Verify Fix Applied:
Verify software version is v1.0.8 or later in application interface or through version check command.📡 Detection & Monitoring
Log Indicators:
- Unexpected UDP packets to InfraSuite Device Master
- File access attempts to sensitive paths
- Authentication failures following UDP traffic
Network Indicators:
- UDP packets with path traversal patterns to InfraSuite ports
- Unusual outbound connections following UDP requests
SIEM Query:
source_port:udp AND dest_port:[InfraSuite_ports] AND payload_contains:"..\\" OR payload_contains:"%2e%2e"