CVE-2021-39143
6.6 · MEDIUMOverview
CVE-2021-39143 is a medium-severity vulnerability affecting linuxfoundation spinnaker. 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 and patches from linuxfoundation. Update spinnaker 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 |
|---|---|---|---|
| linuxfoundation | spinnaker | >= 0, < 1.24.7 | Affected |
Frequently Asked Questions
What is CVE-2021-39143?
CVE-2021-39143 is a medium-severity vulnerability affecting linuxfoundation spinnaker. 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 and patches from linuxfoundation. Update spinnaker 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-2021-39143?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-39143 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.
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