CVE-2020-8569

Kubernetes CSI snapshot-controller DoS

Published: Jan 21, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-476

4.3MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:LAvailability

Low

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Weaknesses

CWE-476

Affected Products

Kubernetes

oss-project·USaka k8s

CSI SnapshotterOn-prem

Cloud & SaaS / container-orchestration

container storage interface snapshotterOn-prem

Cloud & SaaS / container-orchestration

package-ecosystem

github.com/kubernetes-csi/external-snapshotter/v2

OSS Libraries

github.com/kubernetes-csi/external-snapshotter/v3

OSS Libraries

Exploitability

Official Patch Available

Workaround Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Impact

Initial Access

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References

https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxU

groups.google.com

https://github.com/kubernetes-csi/external-snapshotter/issues/380

github.com

https://nvd.nist.gov/vuln/detail/CVE-2020-8569

nvd.nist.gov

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