CVE-2019-7620 : What You Need to Know

Logstash versions before 7.4.1 and 6.8.4 have a vulnerability in the Logstash Beats input plugin, potentially leading to a denial of service attack by unauthorized users.

Understanding CVE-2019-7620

Logstash is affected by a flaw in the Logstash Beats input plugin, allowing for a denial of service attack.

What is CVE-2019-7620?

Logstash versions prior to 7.4.1 and 6.8.4 contain a vulnerability in the Logstash Beats input plugin, enabling unauthorized users to disrupt Logstash's functionality.

The Impact of CVE-2019-7620

This vulnerability could be exploited by sending a specially crafted network packet to the Logstash Beats input, causing Logstash to become unresponsive.

Technical Details of CVE-2019-7620

Logstash's vulnerability in the Logstash Beats input plugin can have severe consequences.

Vulnerability Description

The flaw in Logstash allows unauthorized users to exploit the Logstash Beats input, resulting in a denial of service attack.

Affected Systems and Versions

Product: Logstash
Vendor: Elastic
Vulnerable Versions: before 7.4.1 and 6.8.4

Exploitation Mechanism

Unauthorized users can disrupt Logstash by sending a specifically designed network packet to the Logstash Beats input.

Mitigation and Prevention

Protecting systems from CVE-2019-7620 is crucial to maintaining security.

Immediate Steps to Take

Update Logstash to version 7.4.1 or 6.8.4 to mitigate the vulnerability.
Monitor network traffic for any suspicious activity targeting Logstash.

Long-Term Security Practices

Implement network segmentation to limit access to Logstash.
Regularly review and apply security patches and updates to Logstash.

Patching and Updates

Stay informed about security advisories from Elastic and promptly apply recommended patches to Logstash.