CVE catalog
CVE-2020-8557
kubernetes: CVE-2020-8557
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.43% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | kubernetes | sid | 1.36.4+ds-1 | fixed |
| Debian | kubernetes | forky | 1.36.4+ds-1 | fixed |
| Debian | kubernetes | trixie | 1.32.3+ds-2 | fixed |
| Debian | kubernetes | bookworm | 1.20.5+really1.20.2-1.1+deb12u1 | fixed |
| Suse | kubernetes | linux enterprise module for containers 15 sp1 | 1.17.4-4.18.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | kubernetes | source | sid | 1.18.5-1 | not yet assigned | Not reported | Not reported |
| Debian | kubernetes | source | forky | 1.18.5-1 | not yet assigned | Not reported | Not reported |
| Debian | kubernetes | source | trixie | 1.18.5-1 | not yet assigned | Not reported | Not reported |
| Debian | kubernetes | source | bookworm | 1.18.5-1 | not yet assigned | Not reported | Not reported |
| Suse | kubernetes | rpm | linux enterprise module for containers 15 sp1 | 1.17.4-4.18.1 | Not reported | SUSE-RU-2020:2204-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [kubernetes-client]Fixed
Source package: [kubernetes]
Details (2)
1.20.5+really1.20.2-1.1+deb12u1· amd64 · bookwormFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · bookworm; dsa · kubernetes · debian · 12
1.20.5+really1.20.2-1.1+deb12u1· arm64 · bookwormFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · bookworm; dsa · kubernetes · debian · 12
[Debian 13 (Trixie)]
- [golang-k8s-kubectl-dev]Fixed
Source package: [kubernetes]
Details (2)
1.32.3+ds-2· all · trixieFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · 13
1.32.3+ds-2· all · trixieFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · 13
- [kubectl]Fixed
Source package: [kubernetes]
Details (2)
1.32.3+ds-2· amd64 · trixieFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · 13
1.32.3+ds-2· arm64 · trixieFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · 13
- [kubernetes-client]Fixed
Source package: [kubernetes]
Details (2)
1.32.3+ds-2· amd64 · trixieFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · 13
1.32.3+ds-2· arm64 · trixieFixed · Fixed:
1.18.5-1dsa · kubernetes · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2020:3520]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-ru-2020_2204-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-8557]
- [https://osv.dev/vulnerability/SUSE-RU-2020:2204-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-8557]
- [https://security-tracker.debian.org/tracker/CVE-2020-8557]
- [https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0510.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]