CVE-2024-34031 Overview
CVE-2024-34031 is a SQL injection vulnerability in Delta Electronics DIAEnergie, an industrial energy management system used across manufacturing and critical infrastructure environments. The flaw resides in the Handler_CFG.ashx script, which fails to properly sanitize user-supplied input before incorporating it into SQL statements. An authenticated attacker with low privileges can send crafted requests to inject arbitrary SQL commands. Successful exploitation can compromise the confidentiality, integrity, and availability of the underlying database and the host running DIAEnergie. The vulnerability is tracked under CWE-89 and is documented in the CISA ICS Advisory ICSA-24-123-02.
Critical Impact
An authenticated attacker can execute arbitrary SQL commands against the DIAEnergie backend, potentially leading to full system compromise of the host on which DIAEnergie is deployed.
Affected Products
- Delta Electronics DIAEnergie version 1.10.00.005
- Prior versions of DIAEnergie sharing the vulnerable Handler_CFG.ashx component
- Deployments identified in the CISA ICS Advisory ICSA-24-123-02
Discovery Timeline
- 2024-05-03 - CVE-2024-34031 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-34031
Vulnerability Analysis
DIAEnergie exposes an ASP.NET HTTP handler at Handler_CFG.ashx that processes configuration-related requests. The handler accepts parameters from authenticated users and incorporates those values directly into SQL queries executed against the backing database. Because the input is neither parameterized nor validated against an allow-list, an attacker can append SQL syntax to break out of the intended query context.
Exploitation requires valid credentials, but DIAEnergie is often deployed with weak or shared operator accounts in operational technology (OT) environments. Once inside, an attacker can read or modify energy-management data, escalate privileges within the database, and, depending on database configuration, execute operating-system commands through stored procedures such as xp_cmdshell.
Root Cause
The root cause is improper neutralization of special elements used in an SQL command [CWE-89]. Input handled by Handler_CFG.ashx is concatenated into query strings rather than bound as parameters, allowing SQL metacharacters to alter query logic.
Attack Vector
The attack is network-based over HTTP or HTTPS against the DIAEnergie web interface. An attacker authenticates with any valid low-privilege account, then sends a crafted request to Handler_CFG.ashx containing SQL payloads in vulnerable parameters. No user interaction is required beyond the attacker's own session.
No verified public proof-of-concept code is available for CVE-2024-34031. Technical details are limited to the CISA ICS Advisory ICSA-24-123-02.
Detection Methods for CVE-2024-34031
Indicators of Compromise
- HTTP requests to Handler_CFG.ashx containing SQL metacharacters such as single quotes, UNION SELECT, --, ;, or WAITFOR DELAY
- Unexpected database errors or long response times originating from the DIAEnergie web application
- Creation of new database users, roles, or stored procedures on the DIAEnergie backend
- Outbound connections from the DIAEnergie host initiated by the SQL Server process
Detection Strategies
- Inspect IIS and application logs for anomalous query strings and POST bodies targeting Handler_CFG.ashx
- Deploy a web application firewall with SQL injection signatures tuned for ASP.NET .ashx handlers
- Enable SQL Server auditing to capture unusual query patterns, failed logins, and privilege changes
Monitoring Recommendations
- Alert on authenticated DIAEnergie sessions issuing repeated requests to configuration handlers within short intervals
- Baseline normal parameter values for Handler_CFG.ashx and flag deviations for review
- Correlate database process activity with unexpected cmd.exe or powershell.exe child processes on the DIAEnergie host
How to Mitigate CVE-2024-34031
Immediate Actions Required
- Restrict network access to the DIAEnergie web interface to trusted management networks only
- Enforce strong, unique credentials and remove any default or shared operator accounts
- Apply the vendor update referenced in the CISA ICS Advisory ICSA-24-123-02
- Review database and web server logs for prior exploitation attempts against Handler_CFG.ashx
Patch Information
Delta Electronics has coordinated remediation through CISA. Administrators should consult the CISA ICS Advisory ICSA-24-123-02 and Delta Electronics support channels for the fixed DIAEnergie release and upgrade instructions. Verify the installed build number after patching to confirm the vulnerable version 1.10.00.005 is no longer present.
Workarounds
- Place DIAEnergie behind a reverse proxy or WAF that filters SQL injection patterns targeting .ashx handlers
- Segment the DIAEnergie host on an isolated OT network zone with strict firewall rules
- Run the DIAEnergie database service under a least-privilege account and disable xp_cmdshell and similar dangerous stored procedures
- Require multi-factor authentication or VPN access for any remote administrative session
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
