Upstream information

CVE-2021-25735 at MITRE

Description

A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.

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 5.5
Vector AV:N/AC:L/Au:S/C:N/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.5 6.5
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required High High
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1183409 [RESOLVED / FIXED]

No SUSE Security Announcements cross referenced.


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Please note that this evaluation state might be work in progress, incomplete or outdated.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 Unsupported
SUSE CaaS Platform 4.5 kubernetes-1.18 Unsupported
SUSE Enterprise Storage 6 kubernetes Unsupported
SUSE Linux Enterprise High Performance Computing 12 kubernetes Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 kubernetes Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS kubernetes Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS kubernetes Unsupported
SUSE Linux Enterprise Module for Containers 15 SP1 kubernetes Unsupported
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 12 SP5 kubernetes Not affected
SUSE Linux Enterprise Server 15 SP1 kubernetes Unsupported
SUSE Linux Enterprise Server 15 SP1-BCL kubernetes Unsupported
SUSE Linux Enterprise Server 15 SP1-LTSS kubernetes Unsupported
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 kubernetes Unsupported
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 12 SP5 kubernetes Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 kubernetes Unsupported
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: Thu Mar 11 18:13:43 2021
CVE page last modified: Tue Nov 29 15:44:25 2022