CVE-2022-26836
📋 TL;DR
Delta Electronics DIAEnergie versions before 1.8.02.004 contain a blind SQL injection vulnerability in the HandlerExport.ashx/Calendar endpoint. This allows attackers to execute arbitrary SQL queries, potentially compromising the database and executing system commands. Organizations using DIAEnergie for industrial energy management are affected.
💻 Affected Systems
- Delta Electronics DIAEnergie
📦 What is this software?
Diaenergie by Deltaww
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, exfiltrate sensitive industrial data, manipulate energy management systems, and pivot to other network segments.
Likely Case
Database compromise leading to data theft, manipulation of energy management data, and potential disruption of industrial operations.
If Mitigated
Limited impact with proper network segmentation, input validation, and database permissions restricting the attack surface.
🎯 Exploit Status
SQL injection vulnerabilities are commonly exploited and this one allows command execution, making weaponization likely despite no public PoC.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.8.02.004
Vendor Advisory: https://www.cisa.gov/uscert/ics/advisories/icsa-22-081-01
Restart Required: Yes
Instructions:
1. Download DIAEnergie version 1.8.02.004 from Delta Electronics. 2. Backup current installation and data. 3. Install the updated version following vendor instructions. 4. Restart the DIAEnergie service and verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate DIAEnergie systems from untrusted networks and implement strict firewall rules.
Web Application Firewall
allDeploy WAF with SQL injection protection rules to block exploitation attempts.
🧯 If You Can't Patch
- Implement strict network access controls to limit access to DIAEnergie systems
- Deploy intrusion detection systems monitoring for SQL injection patterns
🔍 How to Verify
Check if Vulnerable:
Check DIAEnergie version in application interface or installation directory. Versions below 1.8.02.004 are vulnerable.Check Version:
Check DIAEnergie application interface or installation properties for version information.Verify Fix Applied:
Confirm version is 1.8.02.004 or higher and test that HandlerExport.ashx/Calendar endpoint properly validates input.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed authentication attempts
- Suspicious requests to HandlerExport.ashx/Calendar
Network Indicators:
- SQL injection patterns in HTTP requests
- Unusual outbound connections from DIAEnergie server
SIEM Query:
source="web_server" AND (uri="*HandlerExport.ashx*" AND (query="*sql*" OR query="*union*" OR query="*select*"))