Upstream information

CVE-2020-8557 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 2.1
Vector AV:L/AC:L/Au:N/C:N/I:N/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.5 5.5
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local Local
Attack Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1173984 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container caasp/v4/caasp-dex:2.16.0
  • caasp-dex >= 2.16.0-3.7.1
Container caasp/v4/cilium-operator:1.6.6
  • cilium-operator >= 1.6.6-3.10.1
Container caasp/v4/cilium:1.6.6
  • cilium >= 1.6.6-3.10.1
  • cilium-cni >= 1.6.6-3.10.1
Container caasp/v4/gangway:3.1.0
  • gangway >= 3.1.0-4.5.1
Container caasp/v4/hyperkube:v1.17.17
  • kubernetes-common >= 1.17.4-4.18.1
Container caasp/v4/kubernetes-client:1.17.17
Container caasp/v4/kucero:1.3.0
Container caasp/v4/kured:1.3.0
  • kubernetes-client >= 1.17.4-4.18.1
  • kubernetes-common >= 1.17.4-4.18.1
SUSE CaaS Platform 4.0
  • caasp-release >= 4.2.2-24.26.1
  • kubernetes-client >= 1.17.4-4.18.1
  • kubernetes-common >= 1.17.4-4.18.1
  • kubernetes-kubeadm >= 1.17.4-4.18.1
  • kubernetes-kubelet >= 1.17.4-4.18.1
  • skuba >= 1.4.1-3.46.1
  • skuba-update >= 1.4.1-3.46.1
 Patchnames:
SUSE-SUSE-CAASP-4.0-2020-2204
SUSE Enterprise Storage 6
SUSE Linux Enterprise High Performance Computing 15 SP1
SUSE Linux Enterprise Module for Containers 15 SP1
SUSE Linux Enterprise Server 15 SP1
SUSE Linux Enterprise Server for SAP Applications 15 SP1
SUSE Manager Proxy 4.0
SUSE Manager Retail Branch Server 4.0
SUSE Manager Server 4.0
  • kubernetes-client >= 1.17.4-4.18.1
  • kubernetes-common >= 1.17.4-4.18.1
 Patchnames:
SUSE-SLE-Module-Containers-15-SP1-2020-2204

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise High Performance Computing 12 kubernetes Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise Server 12 SP5 kubernetes Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 kubernetes Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kubernetes Not affected
Products past their end of life and not receiving proactive updates anymore.
Magnum Orchestration 7 kubernetes Unsupported
SUSE CaaS Platform 3.0 kubernetes Unsupported
SUSE CaaS Platform 4.0 caasp-release Released
SUSE CaaS Platform 4.0 kubernetes Released
SUSE CaaS Platform 4.0 skuba Released
SUSE Container as a Service Platform 1.0 kubernetes Unsupported
SUSE Container as a Service Platform 2.0 kubernetes Unsupported
SUSE Enterprise Storage 6 kubernetes Released
SUSE Linux Enterprise High Performance Computing 15 SP1 kubernetes Released
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS kubernetes Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS kubernetes Released
SUSE Linux Enterprise Module for Containers 15 SP1 kubernetes Released
SUSE Linux Enterprise Module for Public Cloud 12 kubernetes Not affected
SUSE Linux Enterprise Server 12 kubernetes Not affected
SUSE Linux Enterprise Server 12 SP3 kubernetes Not affected
SUSE Linux Enterprise Server 12 SP4 kubernetes Not affected
SUSE Linux Enterprise Server 15 SP1 kubernetes Released
SUSE Linux Enterprise Server 15 SP1-BCL kubernetes Affected
SUSE Linux Enterprise Server 15 SP1-LTSS kubernetes Released
SUSE Linux Enterprise Server for SAP Applications 12 kubernetes Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 kubernetes Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 kubernetes Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 kubernetes Released
SUSE Manager Proxy 4.0 kubernetes Released
SUSE Manager Retail Branch Server 4.0 kubernetes Released
SUSE Manager Server 4.0 kubernetes Released

SUSE Timeline for this CVE

CVE page created: Fri Jul 10 10:12:05 2020
CVE page last modified: Mon Nov 18 13:57:09 2024