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
| Link | Resource |
|---|---|
| https://github.com/kubernetes/kubernetes/issues/93032 | Issue Tracking Patch Third Party Advisory |
| https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200821-0002/ | Third Party Advisory |
| https://github.com/kubernetes/kubernetes/issues/93032 | Issue Tracking Patch Third Party Advisory |
| https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200821-0002/ | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
21 Nov 2024, 05:39
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/kubernetes/kubernetes/issues/93032 - Issue Tracking, Patch, Third Party Advisory | |
| References | () https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ - Mailing List, Third Party Advisory | |
| References | () https://security.netapp.com/advisory/ntap-20200821-0002/ - Third Party Advisory |
Information
Published : 2020-07-23 17:15
Updated : 2024-11-21 05:39
NVD link : CVE-2020-8557
Mitre link : CVE-2020-8557
CVE.ORG link : CVE-2020-8557
JSON object : View
Products Affected
kubernetes
- kubernetes
CWE
CWE-400
Uncontrolled Resource Consumption