CVE-2020-28902 : Vulnerability Insights and Analysis

Command Injection in Nagios Fusion 4.1.8 and earlier allows Privilege Escalation from apache to root in cmd_subsys.php.

Understanding CVE-2020-28902

Command Injection vulnerability in Nagios Fusion 4.1.8 and earlier enables Privilege Escalation from the apache user to root through cmd_subsys.php.

What is CVE-2020-28902?

CVE-2020-28902 is a Command Injection vulnerability found in Nagios Fusion versions 4.1.8 and earlier, allowing an attacker to escalate privileges from the apache user to root by exploiting the cmd_subsys.php file.

The Impact of CVE-2020-28902

This vulnerability could lead to unauthorized access and control over the affected system, potentially resulting in severe consequences such as data theft, system manipulation, or disruption of services.

Technical Details of CVE-2020-28902

Vulnerability Description

The vulnerability involves improper handling of user-supplied input in cmd_subsys.php, leading to command injection and subsequent privilege escalation.

Affected Systems and Versions

Nagios Fusion 4.1.8 and earlier versions are affected.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious commands through the cmd_subsys.php file, allowing them to elevate their privileges from the apache user to root.

Mitigation and Prevention

Immediate Steps to Take

Update Nagios Fusion to the latest version to patch the vulnerability.
Monitor system logs for any suspicious activities indicating a possible exploitation attempt.

Long-Term Security Practices

Implement the principle of least privilege to restrict user permissions and limit the impact of potential security breaches.
Regularly conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security updates and patches released by Nagios and promptly apply them to ensure the security of your systems.