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CVE-2021-39143

6.6 · MEDIUM

Spinnaker is an open source, multi-cloud continuous delivery platform.

Published Jan 4, 2022CWE-22EPSS 0.34%

Overview

CVE-2021-39143 is a medium-severity vulnerability. It was published on January 4, 2022 and has a CVSS 3.1 base score of 6.6 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Spinnaker is an open source, multi-cloud continuous delivery platform. A path traversal vulnerability was discovered in uses of TAR files by AppEngine for deployments. This uses a utility to extract files locally for deployment without validating the paths in that deployment don't override system files. This would allow an attacker to override files on the container, POTENTIALLY introducing a MITM type attack vector by replacing libraries or injecting wrapper files. Users are advised to update as soon as possible. For users unable to update disable Google AppEngine deployments and/or disable artifacts that provide TARs.

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/spinnaker/spinnaker/security/advisories/GHSA-34jx-3vmr-56v8GitHubgithub.com/spinnaker/spinnaker/security/advisories/GHSA-34jx-3vmr-56v8

How CyberStrike helps

Frequently asked questions

What is CVE-2021-39143?

CVE-2021-39143 is a medium-severity vulnerability. It was published on January 4, 2022 and has a CVSS 3.1 base score of 6.6 (MEDIUM).

How severe is CVE-2021-39143?

This vulnerability has a CVSS 3.1 base score of 6.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-39143?

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-2021-39143?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-39143 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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