CVE-2023-3676: Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation

Published Jul 28, 2023
·
Updated

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Affected Software

17 affected componentsFixes available
go/k8s.io/kubernetes<1.24.17
1.24.17
go/k8s.io/kubernetes>=1.25.0<1.25.13
1.25.13
go/k8s.io/kubernetes>=1.26.0<1.26.8
1.26.8
go/k8s.io/kubernetes>=1.27.0<1.27.5
1.27.5
go/k8s.io/kubernetes=1.28.0
1.28.1
All of the following
Any of the following
Kubernetes kubernetes<1.24.17
Kubernetes kubernetes>=1.25.0<1.25.13
Kubernetes kubernetes>=1.26.0<1.26.8
Kubernetes kubernetes>=1.27.0<1.27.5
Kubernetes kubernetes>=1.28.0<1.28.1
Microsoft Windows
Kubernetes kubernetes<1.24.17
Kubernetes kubernetes>=1.25.0<1.25.13
Kubernetes kubernetes>=1.26.0<1.26.8
Kubernetes kubernetes>=1.27.0<1.27.5
Kubernetes kubernetes>=1.28.0<1.28.1
Microsoft Windows

Event History

Jul 28, 2023
Data Sourced
via Red Hat·04:46 AM
DescriptionSeverityAffected Software
Oct 31, 2023
CVE Published
via MITRE·08:22 PM
Data Sourced
via MITRE·08:22 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·09:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Advisory Published
09:32 PM
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Frequently Asked Questions

1

What is CVE-2023-3676?

CVE-2023-3676 is a vulnerability in Kubernetes that allows a user with the ability to create pods on Windows nodes to escalate to admin privileges on those nodes.

2

How does CVE-2023-3676 impact Kubernetes clusters?

CVE-2023-3676 only affects Kubernetes clusters that include Windows nodes.

3

What is the severity of CVE-2023-3676?

CVE-2023-3676 has a severity rating of 8.8 (High).

4

How can I fix CVE-2023-3676?

To fix CVE-2023-3676, it is recommended to update Kubernetes to a version that includes the necessary security patches.

5

Where can I find more information about CVE-2023-3676?

You can find more information about CVE-2023-3676 in the following references: 1. [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2023:4777) 2. [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2023:4780) 3. [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2023:4835)

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