CVE-2021-32932
📋 TL;DR
This SQL injection vulnerability in Advantech iView allows attackers to execute arbitrary SQL commands on vulnerable systems. Unauthorized attackers can potentially access, modify, or delete database information. Organizations using iView versions prior to v5.7.03.6182 are affected.
💻 Affected Systems
- Advantech iView
📦 What is this software?
Iview by Advantech
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data exfiltration, data manipulation, or potential system takeover via chained attacks
Likely Case
Unauthorized access to sensitive information stored in the database, potentially including credentials, configuration data, or operational information
If Mitigated
Limited or no impact if proper input validation and parameterized queries are implemented
🎯 Exploit Status
SQL injection vulnerabilities typically have low exploitation complexity and can be exploited without authentication
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v5.7.03.6182 or later
Vendor Advisory: https://us-cert.cisa.gov/ics/advisories/icsa-21-154-01
Restart Required: Yes
Instructions:
1. Download iView v5.7.03.6182 or later from Advantech. 2. Backup current configuration and data. 3. Install the updated version. 4. Restart the iView service. 5. Verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate iView systems from untrusted networks and limit access to authorized users only
Web Application Firewall
allDeploy a WAF with SQL injection protection rules to block malicious requests
🧯 If You Can't Patch
- Implement strict network access controls to limit connections to iView systems
- Monitor for SQL injection attempts in application logs and network traffic
🔍 How to Verify
Check if Vulnerable:
Check iView version in the application interface or installation directory. Versions prior to 5.7.03.6182 are vulnerable.Check Version:
Check iView About dialog or installation propertiesVerify Fix Applied:
Verify the installed version is 5.7.03.6182 or later and test application functionality📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed login attempts with SQL-like patterns
- Unexpected database errors
Network Indicators:
- HTTP requests containing SQL keywords (SELECT, UNION, INSERT, etc.)
- Unusual traffic patterns to iView web interface
SIEM Query:
source="iView_logs" AND ("SQL" OR "database error" OR "syntax error")