CVE-2023-1934
📋 TL;DR
This critical SQL injection vulnerability in PnPSCADA allows unauthenticated attackers to execute arbitrary SQL commands through the hitlogcsv.jsp endpoint. Attackers can access, modify, or delete sensitive ICS/OT data, SMS logs, and other critical infrastructure information. All organizations using vulnerable PnPSCADA systems are affected.
💻 Affected Systems
- PnPSCADA
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of ICS/OT systems leading to operational disruption, data destruction, or physical damage to critical infrastructure.
Likely Case
Unauthorized access to sensitive industrial control data, SMS logs, and potential data exfiltration or manipulation.
If Mitigated
Limited impact with proper network segmentation and access controls, though vulnerability remains exploitable.
🎯 Exploit Status
Public exploit code available, unauthenticated access makes exploitation trivial
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-23-131-12
Restart Required: No
Instructions:
1. Contact SDG Technologies for patch information 2. Apply vendor-provided patches 3. Test in non-production environment first
🔧 Temporary Workarounds
Network Access Restriction
linuxBlock external access to hitlogcsv.jsp endpoint using firewall rules
iptables -A INPUT -p tcp --dport 80 -m string --string "hitlogcsv.jsp" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "hitlogcsv.jsp" --algo bm -j DROP
Web Application Firewall
allDeploy WAF with SQL injection protection rules
🧯 If You Can't Patch
- Isolate PnPSCADA systems in dedicated network segments with strict access controls
- Implement network monitoring and IDS/IPS with SQL injection detection rules
🔍 How to Verify
Check if Vulnerable:
Test hitlogcsv.jsp endpoint with SQL injection payloads: http://[target]/hitlogcsv.jsp?param=1' OR '1'='1Check Version:
Check PnPSCADA version in web interface or contact vendorVerify Fix Applied:
Retest with same payloads after applying controls; successful fix should return error or no database interaction📡 Detection & Monitoring
Log Indicators:
- Unusual database queries from web server
- Multiple failed SQL syntax attempts
- Access to hitlogcsv.jsp from unexpected sources
Network Indicators:
- SQL keywords in HTTP requests to hitlogcsv.jsp
- Unusual database response sizes
- Patterns matching known exploit payloads
SIEM Query:
source="web_logs" AND uri="*hitlogcsv.jsp*" AND (query="*SELECT*" OR query="*UNION*" OR query="*OR '1'='1*")