Upstream information

CVE-2021-25741 at MITRE

Description

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: Resolved

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
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network Network
Attack 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 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
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
 Patchnames:
SUSE-SUSE-CAASP-4.0-2021-3323
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 >= 2.1.15-3.15.13.2
  • skuba-update >= 2.1.15-3.15.13.2
 Patchnames:
SUSE-SUSE-CAASP-4.5-2021-3049

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Please note that this evaluation state might be work in progress, incomplete or outdated.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
SUSE Linux Enterprise Module for Public Cloud 12 kubernetes Not affected
SUSE Linux Enterprise Server 12 SP5 kubernetes Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kubernetes Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP1 kubernetes Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS kubernetes Released
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS kubernetes Released
SUSE Linux Enterprise Module for Containers 15 SP1 kubernetes Affected
SUSE Linux Enterprise Server 15 SP1 kubernetes Affected
SUSE Linux Enterprise Server 15 SP1-LTSS kubernetes Released
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 kubernetes Released
SUSE Linux Enterprise Server for SAP Applications 15 SP1 kubernetes Released
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 caasp-release Released
SUSE CaaS Platform 4.0 kubernetes Released
SUSE CaaS Platform 4.0 release-notes-caasp Released
SUSE CaaS Platform 4.0 skuba Released
SUSE CaaS Platform 4.5 caasp-release Released
SUSE CaaS Platform 4.5 kubernetes-1.18 Released
SUSE CaaS Platform 4.5 release-notes-caasp Released
SUSE CaaS Platform 4.5 skuba Released
SUSE Enterprise Storage 6 kubernetes Released
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-BCL kubernetes Affected
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 Manager Proxy 4.0 kubernetes Unsupported
SUSE Manager Retail Branch Server 4.0 kubernetes Unsupported
SUSE Manager Server 4.0 kubernetes Unsupported

SUSE Timeline for this CVE

CVE page created: Fri Aug 13 08:30:08 2021
CVE page last modified: Fri Oct 13 21:16:54 2023