CVE-2021-38391 Explained : Impact and Mitigation

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

Understanding CVE-2021-38391

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

What is CVE-2021-38391?

The vulnerability exists in the /DataHandler/AM/AM_Handler.ashx endpoint of Delta Electronics DIAEnergie Version 1.7.5 and earlier versions. Attackers could exploit this issue to execute arbitrary code in the context of NT SERVICE\MSSQLSERVER.

The Impact of CVE-2021-38391

This vulnerability could be exploited by remote, unauthenticated attackers to compromise the affected systems, leading to unauthorized access and potential data leaks.

Technical Details of CVE-2021-38391

This section dives deeper into the technical aspects of the CVE.

Vulnerability Description

The issue stems from the application's failure to validate user-controlled input, allowing attackers to inject malicious SQL queries.

Affected Systems and Versions

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

Exploitation Mechanism

Remote attackers can exploit this vulnerability by sending crafted requests to the vulnerable /DataHandler/AM/AM_Handler.ashx endpoint.

Mitigation and Prevention

Protecting systems from CVE-2021-38391 requires immediate actions and long-term security enhancements.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Employ input validation mechanisms to sanitize user input.
Conduct regular security assessments and audits to detect vulnerabilities.
Implement the principle of least privilege to limit system access.

Patching and Updates

Stay informed about security updates and apply patches as soon as they are available to mitigate the risk of exploitation.