CVE-2021-20198
8.1 · HIGHOverview
CVE-2021-20198 is a high-severity vulnerability affecting redhat openshift_installer. It was published on February 23, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A flaw was found in the OpenShift Installer before version v0.9.0-master.0.20210125200451-95101da940b0. During installation of OpenShift Container Platform 4 clusters, bootstrap nodes are provisioned with anonymous authentication enabled on kubelet port 10250. A remote attacker able to reach this port during installation can make unauthenticated `/exec` requests to execute arbitrary commands within running containers. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Remediation
Check the references section for vendor advisories and patches from redhat. Update openshift_installer 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 |
|---|---|---|---|
| redhat | openshift_installer | >= 0, < 0.9.0-master.0.20210125200451-95101da940b0 | Affected |
Frequently Asked Questions
What is CVE-2021-20198?
CVE-2021-20198 is a high-severity vulnerability affecting redhat openshift_installer. It was published on February 23, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-20198?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-20198?
Check the references section for vendor advisories and patches from redhat. Update openshift_installer 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-2021-20198?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20198 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.
Automated penetration testing that runs continuously, not just quarterly.
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