CVE-2019-7620

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-10-30 · updated 2026-06-17
Weakness: CWE-400

Description

Logstash versions before 7.4.1 and 6.8.4 contain a denial of service flaw in the Logstash Beats input plugin. An unauthenticated user who is able to connect to the port the Logstash beats input could send a specially crafted network packet that would cause Logstash to stop responding.

Affected products

Elastic Logstash: from 6.0.0 before 6.8.4; from 7.0.0 before 7.4.1 — fixed in 6.8.4, 7.4.1

How to fix

Upgrade to a fixed version: Elastic Logstash 6.8.4, 7.4.1. Check the vendor advisory for mitigations.

References

https://discuss.elastic.co/t/elastic-stack-6-8-4-security-update/204908
https://discuss.elastic.co/t/elastic-stack-7-4-1-security-update/204909
https://www.elastic.co/community/security
https://discuss.elastic.co/t/elastic-stack-6-8-4-security-update/204908
https://discuss.elastic.co/t/elastic-stack-7-4-1-security-update/204909
https://www.elastic.co/community/security

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