CVE-2021-22138
3.7 · LOWOverview
CVE-2021-22138 is a low-severity vulnerability affecting elastic logstash. It was published on May 13, 2021 and has a CVSS 3.1 base score of 3.7 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In Logstash versions after 6.4.0 and before 6.8.15 and 7.12.0 a TLS certificate validation flaw was found in the monitoring feature. When specifying a trusted server CA certificate Logstash would not properly verify the certificate returned by the monitoring server. This could result in a man in the middle style attack against the Logstash monitoring data.
Remediation
Check the references section for vendor advisories and patches from elastic. Update logstash to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| elastic | logstash | >= 6.4.0, < 6.8.15 | Affected |
Frequently Asked Questions
What is CVE-2021-22138?
CVE-2021-22138 is a low-severity vulnerability affecting elastic logstash. It was published on May 13, 2021 and has a CVSS 3.1 base score of 3.7 (LOW).
How severe is CVE-2021-22138?
This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-22138?
Check the references section for vendor advisories and patches from elastic. Update logstash to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-22138?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-22138 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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