Vulnerability Description
Kubernetes CSI snapshot-controller prior to v2.1.3 and v3.0.2 could panic when processing a VolumeSnapshot custom resource when: - The VolumeSnapshot referenced a non-existing PersistentVolumeClaim and the VolumeSnapshot did not reference any VolumeSnapshotClass. - The snapshot-controller crashes, is automatically restarted by Kubernetes, and processes the same VolumeSnapshot custom resource after the restart, entering an endless crashloop. Only the volume snapshot feature is affected by this vulnerability. When exploited, users can’t take snapshots of their volumes or delete the snapshots. All other Kubernetes functionality is not affected.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kubernetes | Container Storage Interface Snapshotter | >= 2.1.0, < 2.1.3 |
Related Weaknesses (CWE)
References
- https://github.com/kubernetes-csi/external-snapshotter/issues/380ExploitThird Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxUMailing ListThird Party Advisory
- https://github.com/kubernetes-csi/external-snapshotter/issues/380ExploitThird Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxUMailing ListThird Party Advisory
FAQ
What is CVE-2020-8569?
CVE-2020-8569 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Kubernetes CSI snapshot-controller prior to v2.1.3 and v3.0.2 could panic when processing a VolumeSnapshot custom resource when: - The VolumeSnapshot referenced a non-existing PersistentVolumeClaim an...
How severe is CVE-2020-8569?
CVE-2020-8569 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-8569?
Check the references section above for vendor advisories and patch information. Affected products include: Kubernetes Container Storage Interface Snapshotter.