CVE-2020-5791 Explained : Impact and Mitigation

Nagios XI 5.7.3 allows a remote, authenticated admin user to execute operating system commands with the privileges of the apache user due to an Authenticated OS Command Injection vulnerability.

Understanding CVE-2020-5791

This CVE involves a security issue in Nagios XI 5.7.3 that enables a specific type of attack by exploiting a vulnerability in the system.

What is CVE-2020-5791?

CVE-2020-5791 is an Authenticated OS Command Injection vulnerability in Nagios XI 5.7.3, allowing a remote, authenticated admin user to run OS commands with apache user privileges.

The Impact of CVE-2020-5791

The vulnerability can be exploited by an attacker with authenticated access to execute unauthorized operating system commands, potentially leading to further system compromise.

Technical Details of CVE-2020-5791

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The flaw in Nagios XI 5.7.3 results from improper neutralization of special elements used in an OS command, enabling the execution of unauthorized commands by authenticated users.

Affected Systems and Versions

Product: Nagios XI
Version: 5.7.3

Exploitation Mechanism

The vulnerability allows a remote, authenticated admin user to inject and execute operating system commands with the privileges of the apache user, potentially leading to system compromise.

Mitigation and Prevention

Protecting systems from CVE-2020-5791 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor and restrict admin user activities to prevent unauthorized command executions.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security training for users to raise awareness of potential threats and best practices.
Implement strong authentication mechanisms to prevent unauthorized access.
Employ intrusion detection systems to identify and respond to suspicious activities.

Patching and Updates

Ensure that Nagios XI is updated to a secure version that addresses the Authenticated OS Command Injection vulnerability to mitigate the risk of exploitation.