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.
Published 2021-01-21 17:15:14
Updated 2021-02-01 19:05:38
Source Kubernetes
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-8569

0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 27 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-8569

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.0
MEDIUM AV:N/AC:L/Au:S/C:N/I:N/A:P
8.0
2.9
NIST
4.3
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
2.8
1.4
Kubernetes
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
NIST

CWE ids for CVE-2020-8569

  • A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
    Assigned by:
    • jordan@liggitt.net (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2020-8569

Products affected by CVE-2020-8569

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