CVE-2020-8569
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/kubernetes-csi/external-snapshotter/v2Go | >= 2.0.0, < 2.1.3 | 2.1.3 |
github.com/kubernetes-csi/external-snapshotter/v3Go | >= 3.0.0, < 3.0.2 | 3.0.2 |
Affected products
3- ghsa-coords2 versionspkg:golang/github.com/kubernetes-csi/external-snapshotter/v2pkg:golang/github.com/kubernetes-csi/external-snapshotter/v3
>= 2.0.0, < 2.1.3+ 1 more
- (no CPE)range: >= 2.0.0, < 2.1.3
- (no CPE)range: >= 3.0.0, < 3.0.2
- Kubernetes/CSI Snapshotterv5Range: snapshot-controller v3.0
Patches
Vulnerability mechanics
References
4- github.com/kubernetes-csi/external-snapshotter/issues/380nvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-hwrr-rhmm-vcvfghsaADVISORY
- groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxUnvdMailing ListThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2020-8569ghsaADVISORY
News mentions
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