CVE-2019-7620 Denial of service in Logstash
An unauthenticated attacker can cause Logstash to stop responding by sending a specially crafted network packet to the Beats input port.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-7620?
CVE-2019-7620 is a high-severity denial of service vulnerability in Elastic Logstash, published on 30 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-400
Which versions are affected by CVE-2019-7620?
It affects 1 product.
Products include Elastic Logstash.
How do I fix CVE-2019-7620?
No fix has been published for CVE-2019-7620 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-7620 being exploited?
There is no known exploitation of CVE-2019-7620 in the wild and no public exploit code.
Other vulnerabilities in Elastic Logstash
- CVE-2019-7612 Information disclosure in Logstash
- CVE-2023-46672 Logstash Insertion of Sensitive Information into Log File
- CVE-2026-33466 Improper Limitation of a Pathname to a Restricted Directory in Logstash Leading to Arbitrary File Write
- CVE-2015-5378 Information disclosure in n/a
- CVE-2016-1000221 Logstash Logs Sensitive Information
Sources
Also known as GHSA-77mg-86wc-vj3g.