CVE-2023-24838
📋 TL;DR
HGiga PowerStation has an information leakage vulnerability that allows unauthenticated remote attackers to obtain administrator credentials. These credentials can be used to log into PowerStation or Secure Shell to achieve remote code execution. All systems running vulnerable versions of HGiga PowerStation are affected.
💻 Affected Systems
- HGiga PowerStation
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, data theft, and potential lateral movement within the network.
Likely Case
Administrative credential theft leading to unauthorized access and potential data exfiltration.
If Mitigated
Limited impact if proper network segmentation and access controls prevent credential misuse.
🎯 Exploit Status
Exploitation requires unauthenticated access to specific endpoint; credential leakage leads to RCE via login.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version.
Vendor Advisory: https://www.twcert.org.tw/tw/cp-132-6957-d8f67-1.html
Restart Required: Yes
Instructions:
1. Check vendor advisory for patched version. 2. Backup system. 3. Apply patch from vendor. 4. Restart services. 5. Verify fix.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to PowerStation management interface to trusted IPs only.
Use firewall rules to allow only specific IPs to access PowerStation ports.
Credential Rotation
allChange all administrator credentials immediately to prevent credential reuse attacks.
Change passwords for all PowerStation admin accounts via management interface.
🧯 If You Can't Patch
- Isolate vulnerable system from internet and untrusted networks.
- Implement strict network segmentation and monitor for unauthorized access attempts.
🔍 How to Verify
Check if Vulnerable:
Test if unauthenticated access to credential leakage endpoint exists; check vendor advisory for specific testing methods.Check Version:
Check PowerStation web interface or CLI for version information.Verify Fix Applied:
Verify patch version matches vendor recommendation and test that credential leakage endpoint is no longer accessible.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access attempts to admin credential endpoints
- Multiple failed login attempts followed by successful admin login
Network Indicators:
- Unusual traffic to PowerStation management ports from untrusted sources
SIEM Query:
source_ip NOT IN trusted_ips AND destination_port IN [PowerStation_ports] AND http_status=200