CVE-2022-50594
📋 TL;DR
This vulnerability allows remote attackers to bypass authentication and execute SQL injection attacks on Advantech iView systems. Attackers can exfiltrate user data including clear-text passwords. Organizations using Advantech iView versions before v5.7.04 build 6425 are affected.
💻 Affected Systems
- Advantech iView
📦 What is this software?
Iview by Advantech
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the iView system, credential theft, potential lateral movement to connected industrial control systems, and data exfiltration.
Likely Case
Unauthorized access to user credentials and sensitive data stored in the iView database, potentially leading to further system compromise.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external access to the vulnerable endpoint.
🎯 Exploit Status
The authentication bypass combined with SQL injection makes exploitation straightforward with available public details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v5.7.04 build 6425 or later
Vendor Advisory: https://www.advantech.tw/support/details/firmware?id=1-HIPU-183
Restart Required: Yes
Instructions:
1. Download the patched version from Advantech's support portal. 2. Backup current configuration. 3. Install the update following vendor instructions. 4. Restart the iView service or system.
🔧 Temporary Workarounds
Disable SNMP Management Tool
allTemporarily disable the vulnerable SNMP management component if not required.
Navigate to iView configuration > SNMP settings > Disable SNMP management
Network Access Control
linuxRestrict network access to the iView system using firewall rules.
iptables -A INPUT -p tcp --dport [iView-port] -s [trusted-ips] -j ACCEPT
iptables -A INPUT -p tcp --dport [iView-port] -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate iView systems from untrusted networks
- Deploy a web application firewall (WAF) with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check iView version in the web interface or configuration files. If version is below 5.7.04 build 6425, the system is vulnerable.Check Version:
Check the iView web interface > About section or examine configuration files for version information.Verify Fix Applied:
Verify the version shows 5.7.04 build 6425 or higher after patching. Test that the NetworkServlet endpoint no longer accepts malicious SQL injection payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed authentication attempts followed by successful access to NetworkServlet
- Outbound connections from iView system to unknown IPs
Network Indicators:
- HTTP POST requests to /NetworkServlet with SQL injection patterns in parameters
- Unusual database connection patterns from the iView host
SIEM Query:
source="iView_logs" AND (uri="/NetworkServlet" AND (param="data" AND value MATCH "'.*' OR .*"))