Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWh3cnItcmhtbS12Y3Zm

NULL Pointer Dereference in Kubernetes CSI snapshot-controller

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.

Permalink: https://github.com/advisories/GHSA-hwrr-rhmm-vcvf
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWh3cnItcmhtbS12Y3Zm
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 2 years ago
Updated: over 1 year ago

CVSS Score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-hwrr-rhmm-vcvf, CVE-2020-8569
References:

• https://nvd.nist.gov/vuln/detail/CVE-2020-8569
• https://github.com/kubernetes-csi/external-snapshotter/issues/380
• https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxU
• https://github.com/advisories/GHSA-hwrr-rhmm-vcvf

Repository: https://github.com/kubernetes-csi/external-snapshotter
Blast Radius: 16.7

Affected Packages