Elasticsearch Logstash Beats Input Plugin CVE-2019-7620 Denial of Service Vulnerability

Description

Elasticsearch Logstash is prone to a denial-of-service vulnerability. An attacker can exploit this issue to cause the the application to stop responding, denying service to legitimate users.

Technologies Affected

• Elasticsearch Logstash 1.0.14
• Elasticsearch Logstash 1.0.15
• Elasticsearch Logstash 1.0.16
• Elasticsearch Logstash 1.0.17
• Elasticsearch Logstash 1.1.0
• Elasticsearch Logstash 1.1.0.1
• Elasticsearch Logstash 1.1.1
• Elasticsearch Logstash 1.1.10
• Elasticsearch Logstash 1.1.11
• Elasticsearch Logstash 1.1.12
• Elasticsearch Logstash 1.1.13
• Elasticsearch Logstash 1.1.2
• Elasticsearch Logstash 1.1.3
• Elasticsearch Logstash 1.1.4
• Elasticsearch Logstash 1.1.5
• Elasticsearch Logstash 1.1.6
• Elasticsearch Logstash 1.1.7
• Elasticsearch Logstash 1.1.8
• Elasticsearch Logstash 1.1.9
• Elasticsearch Logstash 1.2.1
• Elasticsearch Logstash 1.2.2
• Elasticsearch Logstash 1.3.0
• Elasticsearch Logstash 1.3.1
• Elasticsearch Logstash 1.3.2
• Elasticsearch Logstash 1.3.3
• Elasticsearch Logstash 1.4.0
• Elasticsearch Logstash 1.4.1
• Elasticsearch Logstash 1.4.2
• Elasticsearch Logstash 1.4.3
• Elasticsearch Logstash 1.4.4
• Elasticsearch Logstash 1.4.5
• Elasticsearch Logstash 1.5.0
• Elasticsearch Logstash 1.5.2
• Elasticsearch Logstash 1.5.3
• Elasticsearch Logstash 1.5.4
• Elasticsearch Logstash 2.1.0
• Elasticsearch Logstash 2.1.1
• Elasticsearch Logstash 2.1.2
• Elasticsearch Logstash 2.1.3
• Elasticsearch Logstash 2.2.0
• Elasticsearch Logstash 2.2.1
• Elasticsearch Logstash 2.2.2
• Elasticsearch Logstash 2.2.3
• Elasticsearch Logstash 2.2.4
• Elasticsearch Logstash 2.3.0
• Elasticsearch Logstash 2.3.1
• Elasticsearch Logstash 2.3.2
• Elasticsearch Logstash 2.3.3
• Elasticsearch Logstash 2.3.4
• Elasticsearch Logstash 5.0.0
• Elasticsearch Logstash 5.0.1
• Elasticsearch Logstash 5.6.10
• Elasticsearch Logstash 5.6.11
• Elasticsearch Logstash 5.6.13
• Elasticsearch Logstash 5.6.14
• Elasticsearch Logstash 5.6.15
• Elasticsearch Logstash 5.6.9
• Elasticsearch Logstash 6.3.0
• Elasticsearch Logstash 6.4.3
• Elasticsearch Logstash 6.5.0
• Elasticsearch Logstash 6.5.1
• Elasticsearch Logstash 6.5.2
• Elasticsearch Logstash 6.5.3
• Elasticsearch Logstash 6.5.4
• Elasticsearch Logstash 6.6.0
• Elasticsearch Logstash 6.6.1
• Elasticsearch Logstash 6.8.0
• Elasticsearch Logstash 6.8.1
• Elasticsearch Logstash 6.8.2
• Elasticsearch Logstash 6.8.3
• Elasticsearch Logstash 7.3.2
• Elasticsearch Logstash 7.4.0

Recommendations

Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn’t needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Disallow anonymous access to services. Permit access for trusted individuals only.
Restrict access to trusted and accountable users only.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Use NIDS to detect suspicious or anomalous network traffic. Monitor logs for signs of malicious activity.

Updates are available. Please see the references or vendor advisory for more information.