Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Kubernetes / Kubernetes | affected 1.15; affected 1.14; affected 1.13; affected 1.12; affected 1.11; affected 1.10; affected 1.9; affected 1.8; affected 1.7; affected 1.6; affected 1.5; affected 1.4; affected 1.3; affected 1.2; affected 1.1; affected 1.18 before 1.18.6; affected 1.17 before 1.17.9; affected 1.16 before 1.16.13 |
CWE
CWE-400
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/
ADP enrichment
No English description supplied.