CVE-2019-9164 : Exploit Details and Defense Strategies

In Nagios XI versions prior to 5.5.11, a vulnerability known as command injection exists, allowing authenticated users to execute remote commands through autodiscovery jobs.

Understanding CVE-2019-9164

What is CVE-2019-9164?

Command injection in Nagios XI before version 5.5.11 enables authenticated users to run arbitrary remote commands by creating autodiscovery jobs.

The Impact of CVE-2019-9164

This vulnerability poses a significant risk as it allows attackers to execute unauthorized commands on the system, potentially leading to further exploitation and compromise.

Technical Details of CVE-2019-9164

Vulnerability Description

The vulnerability in Nagios XI versions earlier than 5.5.11 permits authenticated users to execute remote commands via autodiscovery job creation.

Affected Systems and Versions

Product: Nagios XI
Vendor: Nagios
Versions affected: All versions prior to 5.5.11

Exploitation Mechanism

Attackers with authenticated access can exploit this vulnerability by leveraging the autodiscovery job feature to execute commands of their choice remotely.

Mitigation and Prevention

Immediate Steps to Take

Upgrade Nagios XI to version 5.5.11 or later to mitigate the vulnerability.
Monitor and restrict user permissions to minimize the risk of unauthorized command execution.

Long-Term Security Practices

Regularly review and update security configurations to prevent similar vulnerabilities.
Conduct security training for users to raise awareness about the risks of command injection attacks.

Patching and Updates

Apply security patches and updates provided by Nagios to address known vulnerabilities and enhance system security.