CVE-2020-27990 : What You Need to Know

Nagios XI before 5.7.5 is vulnerable to XSS in the Deployment tool (add agent).

Understanding CVE-2020-27990

Nagios XI before 5.7.5 is susceptible to a cross-site scripting (XSS) vulnerability in the Deployment tool (add agent).

What is CVE-2020-27990?

This CVE refers to a security issue in Nagios XI that allows attackers to execute malicious scripts in the context of an authenticated user's session.

The Impact of CVE-2020-27990

The vulnerability could be exploited by an attacker to perform various malicious actions, such as stealing sensitive information, performing unauthorized actions, or gaining unauthorized access to the system.

Technical Details of CVE-2020-27990

Nagios XI before version 5.7.5 is affected by a cross-site scripting vulnerability in the Deployment tool (add agent).

Vulnerability Description

The vulnerability allows attackers to inject and execute malicious scripts in the context of an authenticated user's session.

Affected Systems and Versions

Product: Nagios XI
Vendor: Nagios
Versions Affected: All versions before 5.7.5

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts through the Deployment tool (add agent) in Nagios XI.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-27990.

Immediate Steps to Take

Upgrade Nagios XI to version 5.7.5 or later to eliminate the vulnerability.
Regularly monitor and audit the Nagios XI deployment for any signs of unauthorized access or malicious activities.

Long-Term Security Practices

Implement strict input validation mechanisms to prevent XSS attacks in web applications.
Educate users on safe browsing practices and the importance of not clicking on suspicious links or executing unknown scripts.

Patching and Updates

Stay informed about security updates and patches released by Nagios for Nagios XI to address vulnerabilities like CVE-2020-27990.