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CVE-2022-36103

7.2 · HIGH

Talos Linux is a Linux distribution built for Kubernetes deployments.

Published Sep 13, 2022CWE-732EPSS 0.69%

Overview

CVE-2022-36103 is a high-severity vulnerability. It was published on September 13, 2022 and has a CVSS 3.1 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Talos Linux is a Linux distribution built for Kubernetes deployments. Talos worker nodes use a join token to get accepted into the Talos cluster. Due to improper validation of the request while signing a worker node CSR (certificate signing request) Talos control plane node might issue Talos API certificate which allows full access to Talos API on a control plane node. Accessing Talos API with full level access on a control plane node might reveal sensitive information which allows full level access to the cluster (Kubernetes and Talos PKI, etc.). Talos API join token is stored in the machine configuration on the worker node. When configured correctly, Kubernetes workloads don't have access to the machine configuration, but due to a misconfiguration workload might access the machine configuration and reveal the join token. This problem has been fixed in Talos 1.2.2. Enabling the Pod Security Standards mitigates the vulnerability by denying hostPath mounts and host networking by default

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088fGitHubgithub.com/siderolabs/talos/releases/tag/v1.2.2GitHubgithub.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qqGitHubgithub.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088fGitHubgithub.com/siderolabs/talos/releases/tag/v1.2.2GitHubgithub.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qq

How CyberStrike helps

Frequently asked questions

What is CVE-2022-36103?

CVE-2022-36103 is a high-severity vulnerability. It was published on September 13, 2022 and has a CVSS 3.1 base score of 7.2 (HIGH).

How severe is CVE-2022-36103?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-36103?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2022-36103?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-36103 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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