CVE Vulnerability

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.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

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

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

Configuration 1

cpe:2.3:a:kubernetes:container_storage_interface_snapshotter:*:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:container_storage_interface_snapshotter:*:*:*:*:*:*:*:*
Information

Published : 2021-01-21 05:15

Updated : 2021-02-01 07:05

NVD link : CVE-2020-8569

Mitre link : CVE-2020-8569

Products Affected
No products.
CWE
CWE-476