CVE-2020-8569
Last modified
CVE-2020-8569 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 2.27% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kubernetes | Container Storage Interface Snapshotter | >= 2.1.0, < 2.1.3 |
| Kubernetes | Container Storage Interface Snapshotter | >= 3.0.0, < 3.0.2 |
References
- https://github.com/kubernetes-csi/external-snapshotter/issues/380Exploit, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxUMailing List, Third Party Advisory
- https://github.com/kubernetes-csi/external-snapshotter/issues/380Exploit, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxUMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
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