CVE-2023-40931 Explained : Impact and Mitigation

A SQL injection vulnerability in Nagios XI from version 5.11.0 up to and including 5.11.1 allows authenticated attackers to execute arbitrary SQL commands.

Understanding CVE-2023-40931

This section provides insights into the impact, technical details, and mitigation strategies for CVE-2023-40931.

What is CVE-2023-40931?

CVE-2023-40931 is a SQL injection vulnerability in Nagios XI versions 5.11.0 to 5.11.1, enabling authenticated attackers to execute unauthorized SQL commands through the ID parameter in a specific POST request.

The Impact of CVE-2023-40931

The vulnerability poses a significant risk as it allows attackers to manipulate the database, potentially leading to data theft, modification, or complete system compromise.

Technical Details of CVE-2023-40931

This section delves into the specifics of the vulnerability, including its description, affected systems, and exploitation mechanisms.

Vulnerability Description

The flaw in Nagios XI versions 5.11.0 to 5.11.1 arises from inadequate input validation of the ID parameter in the POST request to /nagiosxi/admin/banner_message-ajaxhelper.php, enabling SQL injection attacks.

Affected Systems and Versions

All installations of Nagios XI from version 5.11.0 up to and including 5.11.1 are impacted by this vulnerability.

Exploitation Mechanism

Authenticated attackers can exploit this vulnerability by injecting malicious SQL commands via the ID parameter in specific POST requests, gaining unauthorized database access.

Mitigation and Prevention

This section outlines immediate actions and long-term security practices to mitigate the risks associated with CVE-2023-40931.

Immediate Steps to Take

Users should update Nagios XI to a patched version, restrict access to vulnerable endpoints, and monitor for any suspicious activities indicating exploitation.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, educate users on SQL injection risks, and stay informed about security updates and patches.

Patching and Updates

Ensure timely application of vendor-supplied patches, regularly check for security advisories, and maintain a proactive approach to system security.