GHSA-55qj-gj3x-jq9r
Denial of service in Kubernetes
At a glance
- Published
- Updated
- CVE
- CVE-2020-8557
- Aliases
- GO-2024-2753
- CVSS_V3
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
The Kubernetes kubelet component in versions 1.1-1.16.12, 1.17.0-1.17.8 and 1.18.0-1.18.5 do not account for disk usage by a pod which writes to its own /etc/hosts file. The /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager when calculating ephemeral storage usage by a pod. If a pod writes a large amount of data to the /etc/hosts file, it could fill the storage space of the node and cause the node to fail.
Affected packages
| Package | Versions |
|---|---|
| Go · k8s.io/kubernetes/pkg/kubelet | introduced 1.1.0, fixed 1.16.13 |
| Go · k8s.io/kubernetes/pkg/kubelet | introduced 1.17.0, fixed 1.17.9 |
| Go · k8s.io/kubernetes/pkg/kubelet | introduced 1.18.0, fixed 1.18.6 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-8557 ADVISORY
- https://github.com/kubernetes/kubernetes/issues/93032 WEB
- https://github.com/kubernetes/kubernetes/pull/92921 WEB
- https://github.com/kubernetes/kubernetes/commit/530f199b6e07cdaab32361e39709ac45f3fdc446 WEB
- https://github.com/kubernetes/kubernetes/commit/68750fefd3df76b7b008ef7b18e8acd18d5c2f2e WEB
- https://github.com/kubernetes/kubernetes/commit/7fd849cffa2f93061fbcb0a6ae4efd0539b1e981 WEB
- https://github.com/advisories/GHSA-55qj-gj3x-jq9r ADVISORY
- https://github.com/kubernetes/kubernetes PACKAGE
- https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ WEB
- https://pkg.go.dev/vuln/GO-2024-2753 WEB
- https://security.netapp.com/advisory/ntap-20200821-0002 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |