CVE-2020-8557
- Source
- https://cve.org/CVERecord?id=CVE-2020-8557
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8557.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-8557
- Aliases
- Downstream
- Related
- Published
- 2020-07-23T17:15:12.513Z
- Modified
- 2026-02-06T05:19:50.179454Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://github.com/kubernetes/kubernetes/issues/93032
- https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ
- https://security.netapp.com/advisory/ntap-20200821-0002/
- https://github.com/kubernetes/kubernetes/issues/93032
- https://github.com/kubernetes/kubernetes/issues/93032
- https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ
Affected packages
Git / github.com/kubernetes/kubelet
Git / github.com/kubernetes/kubernetes
Affected versions
v1.*
v1.17.0
v1.17.1
v1.17.1-beta.0
v1.17.2
v1.17.2-beta.0
v1.17.3
v1.17.3-beta.0
v1.17.4
v1.17.4-beta.0
v1.17.5
v1.17.5-beta.0
v1.17.6
v1.17.6-beta.0
v1.17.7
v1.17.7-rc.0
v1.17.8
v1.17.8-rc.0
v1.17.8-rc.1
v1.17.9-rc.0
v1.18.0
v1.18.1
v1.18.1-beta.0
v1.18.2
v1.18.2-beta.0
v1.18.3
v1.18.3-beta.0
v1.18.4
v1.18.4-rc.0
v1.18.5
v1.18.5-rc.0
v1.18.5-rc.1
v1.18.6-rc.0