CVE-2021-37347 : Vulnerability Insights and Analysis

Nagios XI before version 5.8.5 is vulnerable to local privilege escalation due to a validation issue in the getprofile.sh script.

Understanding CVE-2021-37347

This CVE impacts Nagios XI versions prior to 5.8.5, making systems susceptible to local privilege escalation attacks.

What is CVE-2021-37347?

The vulnerability in Nagios XI before version 5.8.5 allows unprivileged users to escalate their privileges due to the lack of proper validation in the getprofile.sh script.

The Impact of CVE-2021-37347

This vulnerability could be exploited by local attackers to gain elevated privileges on the system, potentially leading to unauthorized access or malicious activities.

Technical Details of CVE-2021-37347

Below are the technical details regarding CVE-2021-37347:

Vulnerability Description

Nagios XI's getprofile.sh script does not adequately validate the directory name passed as an argument, opening up the system to local privilege escalation.

Affected Systems and Versions

All Nagios XI installations before version 5.8.5 are affected by this vulnerability, exposing them to potential exploitation.

Exploitation Mechanism

By manipulating the directory name parameter in the getprofile.sh script, malicious users can raise their privileges on the system, bypassing security controls.

Mitigation and Prevention

To safeguard your system from CVE-2021-37347, follow these mitigation strategies:

Immediate Steps to Take

Update Nagios XI to version 5.8.5 or later to patch the vulnerability and prevent local privilege escalation attacks.

Long-Term Security Practices

Implement the principle of least privilege, ensuring that users have only the necessary permissions to perform their tasks, reducing the risk of privilege escalation.

Patching and Updates

Regularly monitor security updates for Nagios XI and apply patches promptly to address potential vulnerabilities and enhance system security.