cvedb.io
CVE-2023-23939
LOW · CVSS 3.9
EPSS exploitation probability: 0%
Published 2023-03-06T19:15:10.297 · Last modified 2026-06-17T05:38:20.003

Summary

Azure/setup-kubectl is a GitHub Action for installing Kubectl. This vulnerability only impacts versions before version 3. An insecure temporary creation of a file allows other actors on the Actions runner to replace the Kubectl binary created by this action because it is world writable. This Kubectl tool installer runs `fs.chmodSync(kubectlPath, 777)` to set permissions on the Kubectl binary, however, this allows any local user to replace the Kubectl binary. This allows privilege escalation to the user that can also run kubectl, most likely root. This attack is only possible if an attacker somehow breached the GitHub actions runner or if a user is utilizing an Action that maliciously executes this attack. This has been fixed and released in all versions `v3` and later. 775 permissions are

Affected products

microsoft — azure_setup_kubectl

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.