CVE-2024-4548: Deltaww DIAEnergie SQLi Vulnerability

CVE-2024-4548 Overview

CVE-2024-4548 is a critical SQL injection vulnerability affecting Delta Electronics DIAEnergie, an industrial energy management software solution. The vulnerability exists in the CEBC.exe component when processing a 'RecalculateHDMWYC' message. The message is parsed using the '~' character as a field separator, and an unauthenticated remote attacker can exploit the fourth field to execute arbitrary SQL commands against the underlying database.

This vulnerability poses significant risk to industrial control system (ICS) environments where DIAEnergie is deployed for energy monitoring and management operations.

Critical Impact

Unauthenticated remote attackers can execute arbitrary SQL commands, potentially leading to complete database compromise, data exfiltration, data manipulation, and further system compromise in industrial environments.

Affected Products

• Delta Electronics DIAEnergie v1.10.1.8610 and prior versions
• All installations running vulnerable versions of CEBC.exe component

Discovery Timeline

• 2024-05-06 - CVE-2024-4548 published to NVD
• 2025-06-27 - Last updated in NVD database

Technical Details for CVE-2024-4548

Vulnerability Analysis

This SQL injection vulnerability stems from improper input validation in the CEBC.exe executable component of Delta Electronics DIAEnergie. When the application processes incoming 'RecalculateHDMWYC' messages, it parses the message content by splitting it into four distinct fields using the tilde (~) character as a delimiter. The fourth field is then incorporated directly into SQL queries without proper sanitization or parameterization.

The vulnerability is particularly dangerous because it requires no authentication to exploit. An attacker with network access to the vulnerable system can craft malicious messages containing SQL injection payloads in the fourth field position, which are then executed directly against the backend database with the privileges of the application.

Root Cause

The root cause of CVE-2024-4548 lies in two fundamental security weaknesses: Improper Input Validation (CWE-20) and SQL Injection (CWE-89). The CEBC.exe component fails to properly validate, sanitize, or parameterize user-controlled input from the 'RecalculateHDMWYC' message before incorporating it into database queries. This allows attacker-controlled data to break out of the intended data context and be interpreted as SQL commands.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can exploit this vulnerability by:

1. Establishing a network connection to the DIAEnergie system running CEBC.exe
2. Sending a specially crafted 'RecalculateHDMWYC' message with SQL injection payload in the fourth field
3. The message format uses the tilde (~) character as a separator between fields
4. The malicious payload in field four is processed by the application and executed against the database

The vulnerability allows for complete database compromise, including data theft, modification, and potential lateral movement within the industrial network environment. For detailed technical analysis, refer to the Tenable Security Research Advisory.

Detection Methods for CVE-2024-4548

Indicators of Compromise

• Unusual network connections to DIAEnergie services from unexpected sources
• Database query logs showing abnormal or malformed SQL statements
• Evidence of 'RecalculateHDMWYC' messages containing SQL syntax characters in the fourth field
• Unexpected database modifications or data exfiltration activity
• Application logs showing parsing errors or database exceptions related to message processing

Detection Strategies

• Deploy network intrusion detection rules to identify messages containing SQL injection patterns targeting the 'RecalculateHDMWYC' message handler
• Implement database activity monitoring to detect anomalous queries originating from the DIAEnergie application
• Monitor CEBC.exe process activity for unusual database operations or error conditions
• Establish baseline network traffic patterns to DIAEnergie systems and alert on deviations

Monitoring Recommendations

• Enable detailed logging for all DIAEnergie components, particularly CEBC.exe
• Configure database audit logging to capture all queries and identify injection attempts
• Implement network segmentation monitoring to detect unauthorized access to ICS/SCADA networks
• Deploy endpoint detection and response (EDR) solutions on systems running DIAEnergie

How to Mitigate CVE-2024-4548

Immediate Actions Required

• Identify all Delta Electronics DIAEnergie installations running version 1.10.1.8610 or earlier
• Implement network segmentation to restrict access to DIAEnergie systems from untrusted networks
• Apply firewall rules to limit network access to the CEBC.exe service to only authorized systems
• Enable enhanced logging and monitoring for all DIAEnergie deployments
• Contact Delta Electronics for patch availability and upgrade guidance

Patch Information

Organizations should contact Delta Electronics directly for patching guidance and updated software versions that address CVE-2024-4548. Monitor the Tenable Security Research Advisory for additional technical details and remediation guidance.

Workarounds

• Implement strict network access controls to limit connectivity to DIAEnergie systems
• Deploy a web application firewall (WAF) or network-based intrusion prevention system (IPS) with SQL injection detection rules
• Isolate DIAEnergie systems on dedicated network segments with restricted access
• Implement database-level controls to limit the privileges of the DIAEnergie application account
• Consider temporarily disabling the vulnerable 'RecalculateHDMWYC' functionality if operationally feasible

# Network segmentation example - restrict access to DIAEnergie systems
# Add firewall rules to limit access to trusted management networks only
iptables -A INPUT -p tcp --dport 80 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP