CVE-2020-8569

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 v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/kubernetes-csi/external-snapshotter/issues/380	Exploit Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxU	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:kubernetes:container_storage_interface_snapshotter::::::::
	cpe:2.3:a:kubernetes:container_storage_interface_snapshotter::::::::

History

No history.

Information

Published : 2021-01-21 17:15

Updated : 2024-02-28 18:08

NVD link : CVE-2020-8569

Mitre link : CVE-2020-8569

CVE.ORG link : CVE-2020-8569

JSON object : View

Products Affected

kubernetes

container_storage_interface_snapshotter

CWE

CWE-476

NULL Pointer Dereference

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