CVE-2024-43699: Deltaww Diaenergie SQLi Vulnerability

CVE-2024-43699 Overview

Delta Electronics DIAEnergie is vulnerable to an SQL injection in the script AM_RegReport.aspx. An unauthenticated attacker may be able to exploit this issue to obtain records contained in the targeted product. This vulnerability affects the DIAEnergie energy management system, which is commonly deployed in industrial and commercial environments for monitoring and managing energy consumption.

Critical Impact

Unauthenticated attackers can exploit this SQL injection vulnerability to extract sensitive data from the DIAEnergie database, potentially compromising operational data, user credentials, and system configurations without requiring any authentication.

Affected Products

• Delta Electronics DIAEnergie (all versions prior to patch)
• deltaww diaenergie

Discovery Timeline

• 2024-10-03 - CVE-2024-43699 published to NVD
• 2024-10-08 - Last updated in NVD database

Technical Details for CVE-2024-43699

Vulnerability Analysis

This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The vulnerable endpoint AM_RegReport.aspx fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows an unauthenticated remote attacker to inject malicious SQL statements and manipulate the underlying database operations.

The attack requires no authentication and can be executed remotely over the network, making it particularly dangerous in environments where DIAEnergie is accessible from untrusted networks. Successful exploitation could lead to unauthorized access to sensitive energy management data, modification of database records, and potentially further system compromise.

Root Cause

The root cause of this vulnerability lies in the AM_RegReport.aspx script's failure to implement proper input validation and parameterized queries. User-controlled input is directly concatenated into SQL statements without sanitization, allowing attackers to break out of the intended query structure and execute arbitrary SQL commands against the backend database.

Attack Vector

The attack vector is network-based, requiring no user interaction or authentication. An attacker can craft malicious HTTP requests to the vulnerable AM_RegReport.aspx endpoint containing SQL injection payloads. These payloads can be used to extract database contents, enumerate database schema information, or potentially escalate to more severe attacks depending on database permissions and system configuration.

The vulnerability is exploitable by sending specially crafted requests to the AM_RegReport.aspx script with malicious SQL statements embedded in vulnerable parameters. Due to the sensitive nature of SQL injection vulnerabilities, specific exploitation details are not provided here. For technical details, refer to the CISA ICS Advisory ICSA-24-277-03.

Detection Methods for CVE-2024-43699

Indicators of Compromise

• Unusual or malformed HTTP requests to the AM_RegReport.aspx endpoint containing SQL syntax patterns
• Database error messages in web server logs indicating SQL syntax errors
• Unexpected database queries or access patterns originating from the DIAEnergie application
• Large volumes of data being extracted through the web interface

Detection Strategies

• Deploy web application firewalls (WAF) with SQL injection detection rules targeting the DIAEnergie application
• Monitor HTTP request logs for common SQL injection patterns such as single quotes, UNION statements, and comment sequences
• Implement database activity monitoring to detect unusual query patterns or unauthorized data access
• Enable verbose logging on the DIAEnergie application to capture detailed request information

Monitoring Recommendations

• Configure SIEM alerting for SQL injection attack patterns targeting DIAEnergie endpoints
• Monitor network traffic to the DIAEnergie server for anomalous request volumes or patterns
• Implement file integrity monitoring on DIAEnergie application files to detect potential post-exploitation modifications
• Review database audit logs regularly for unauthorized access attempts

How to Mitigate CVE-2024-43699

Immediate Actions Required

• Restrict network access to DIAEnergie installations to trusted networks and authorized users only
• Implement network segmentation to isolate DIAEnergie systems from untrusted network segments
• Deploy a web application firewall with SQL injection protection in front of DIAEnergie
• Monitor DIAEnergie access logs for suspicious activity while awaiting patching

Patch Information

Delta Electronics has released security updates addressing this vulnerability. Organizations should consult the Delta Electronics Cybersecurity Advisory for the latest patch information and upgrade instructions. Additionally, CISA has published ICS Advisory ICSA-24-277-03 with detailed remediation guidance for affected systems.

Workarounds

• Place DIAEnergie behind a reverse proxy that filters SQL injection patterns
• Restrict access to the AM_RegReport.aspx endpoint to only authorized IP addresses
• Implement strict input validation at the network perimeter level
• Consider temporarily disabling the reporting functionality if not critical to operations

# Example: Restrict access to vulnerable endpoint using firewall rules
# Block external access to AM_RegReport.aspx
iptables -A INPUT -p tcp --dport 80 -m string --string "AM_RegReport.aspx" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "AM_RegReport.aspx" --algo bm -j DROP

# Allow only from trusted network
iptables -I INPUT -s 192.168.1.0/24 -p tcp --dport 80 -j ACCEPT
iptables -I INPUT -s 192.168.1.0/24 -p tcp --dport 443 -j ACCEPT