CVE-2021-40345 : What You Need to Know

This CVE-2021-40345 article provides details about an issue discovered in Nagios XI 5.8.5 which could lead to command injection through file uploads.

Understanding CVE-2021-40345

This section gives insight into the nature of the CVE-2021-40345 vulnerability.

What is CVE-2021-40345?

CVE-2021-40345 is a vulnerability found in Nagios XI 5.8.5 allowing command injection via file uploads in the Manage Dashlets section of the Admin panel.

The Impact of CVE-2021-40345

The vulnerability enables an attacker to execute system commands through command injection, potentially leading to unauthorized access and malicious activities.

Technical Details of CVE-2021-40345

In this section, you will find specific technical information about CVE-2021-40345.

Vulnerability Description

The issue in Nagios XI 5.8.5 permits command injection within the name of the first file in the uploaded ZIP archive, providing a pathway for executing system commands.

Affected Systems and Versions

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Exploitation Mechanism

The vulnerability arises from the ability of an administrator to upload ZIP files containing a malicious filename that triggers the command injection, allowing unauthorized command execution.

Mitigation and Prevention

Explore the necessary steps to mitigate and prevent exploitation of CVE-2021-40345.

Immediate Steps to Take

Immediately update Nagios XI to a patched version that addresses the command injection vulnerability.
Restrict access to the Manage Dashlets section to authorized personnel only.
Regularly monitor system logs for any unusual activities.

Long-Term Security Practices

Conduct regular security assessments and audits to identify and remediate vulnerabilities proactively.
Provide security awareness training to administrators on secure uploading practices to prevent such exploits.

Patching and Updates

Apply security patches and updates provided by Nagios to ensure the latest security enhancements and fixes are in place.