Upstream information

CVE-2021-25741 at MITRE


A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5.5
Vector AV:N/AC:L/Au:S/C:P/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 8.1 8.8
Access Vector Network Network
Access Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact None High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1189416 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container caasp/v4.5/kube-apiserver:v1.18.20
  • kubernetes-1.18-apiserver >= 1.18.20-4.11.3
Container caasp/v4.5/kube-controller-manager:v1.18.20
  • kubernetes-1.18-controller-manager >= 1.18.20-4.11.3
Container caasp/v4.5/kube-proxy:v1.18.20
  • kubernetes-1.18-proxy >= 1.18.20-4.11.3
Container caasp/v4.5/kube-scheduler:v1.18.20
  • kubernetes-1.18-scheduler >= 1.18.20-4.11.3
Container caasp/v4/hyperkube:v1.17.17
  • kubernetes-common >= 1.17.17-4.25.2
Container caasp/v4/kubernetes-client:1.17.17
Container caasp/v4/kucero:1.3.0
Container caasp/v4/kured:1.3.0
  • kubernetes-client >= 1.17.17-4.25.2
  • kubernetes-common >= 1.17.17-4.25.2
SUSE CaaS Platform 4.0
  • caasp-release >= 4.2.6-24.43.2
  • kubernetes-client >= 1.17.17-4.25.2
  • kubernetes-common >= 1.17.17-4.25.2
  • kubernetes-kubeadm >= 1.17.17-4.25.2
  • kubernetes-kubelet >= 1.17.17-4.25.2
  • release-notes-caasp >= 4.2.20210929-4.71.2
  • skuba >= 1.4.13-3.56.2
  • skuba-update >= 1.4.13-3.56.2
SUSE CaaS Platform 4.5
  • caasp-release >= 4.5.5-1.19.3
  • kubernetes-1.18-kubeadm >= 1.18.20-4.11.3
  • kubernetes-1.18-kubelet >= 1.18.20-4.11.3
  • release-notes-caasp >= 4.5.20210907-3.22.3
  • skuba >= 2.1.15-
  • skuba-update >= 2.1.15-

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Please note that this evaluation state might be work in progress, incomplete or outdated.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.

Product(s) Source package State
SUSE CaaS Platform 4.0 kubernetes Released
SUSE CaaS Platform 4.0 skuba Released
SUSE CaaS Platform 4.5 kubernetes-1.18 Released
SUSE Enterprise Storage 6 kubernetes In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS kubernetes Released
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS kubernetes In progress
SUSE Linux Enterprise Module for Public Cloud 12 kubernetes Affected
SUSE Linux Enterprise Server 15 SP1 LTSS kubernetes In progress
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 kubernetes In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 kubernetes In progress
SUSE Manager Proxy 4.0 kubernetes Unsupported
SUSE Manager Retail Branch Server 4.0 kubernetes Unsupported
SUSE Manager Server 4.0 kubernetes Unsupported