CVE-2021-38393 : Security Advisory and Response

A Blind SQL injection vulnerability in Delta Electronics DIAEnergie Version 1.7.5 and prior allows remote attackers to execute arbitrary code.

Understanding CVE-2021-38393

This CVE describes a Blind SQL injection vulnerability in Delta Electronics DIAEnergie software.

What is CVE-2021-38393?

CVE-2021-38393 is a Blind SQL injection vulnerability in the /DataHandler/HandlerAlarmGroup.ashx endpoint of Delta Electronics DIAEnergie Version 1.7.5 and prior. Attackers can execute arbitrary code via this issue.

The Impact of CVE-2021-38393

A remote, unauthenticated attacker can exploit this vulnerability to execute arbitrary code in the context of NT SERVICE\MSSQLSERVER.

Technical Details of CVE-2021-38393

This section provides technical details about the vulnerability.

Vulnerability Description

A Blind SQL injection vulnerability exists in the /DataHandler/HandlerAlarmGroup.ashx endpoint of Delta Electronics DIAEnergie Version 1.7.5 and prior. The application fails to validate user-controlled values, leading to potential code execution.

Affected Systems and Versions

Delta Electronics DIAEnergie Version 1.7.5 and prior are affected by this vulnerability.

Exploitation Mechanism

The vulnerability arises from inadequate validation of user-controlled values supplied through the parameter agid, allowing attackers to inject malicious SQL commands.

Mitigation and Prevention

To secure systems, immediate actions should be taken along with long-term security practices.

Immediate Steps to Take

Update Delta Electronics DIAEnergie to a patched version.
Implement strict input validation mechanisms.

Long-Term Security Practices

Regularly conduct security assessments and audits.
Educate developers and maintainers on secure coding practices.

Patching and Updates

Stay informed about security updates and apply patches promptly to prevent exploitation of vulnerabilities.