RHSA-2025:4473 - Security Advisory

Topic

multicluster Engine for Kubernetes 2.5.9 General Availability release images,
with updates to container images.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE links in the References section.

Description

multicluster engine for Kubernetes v2.5.9 images

multicluster engine for Kubernetes provides the foundational components
that are necessary for the centralized management of multiple
Kubernetes-based clusters across data centers, public clouds, and private
clouds.

You can use the engine to create new Red Hat OpenShift Container Platform
clusters or to bring existing Kubernetes-based clusters under management by
importing them.

After the clusters are managed, you can use the APIs that
are provided by the engine to distribute configuration based on placement
policy.

Security fix(es):

• golang.org/x/oauth2/jws: Unexpected memory consumption during token parsing in golang.org/x/oauth2/jws (CVE-2025-22868)
• golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing (JWT) (CVE-2025-30204)

Solution

For multicluster engine for Kubernetes, see the following documentation for
details on how to install the images:

https://docs.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.10/html/clusters/cluster_mce_overview#mce-install-intro

Affected Products

• multicluster engine for Kubernetes 1 x86_64
• multicluster engine for Kubernetes Text-only Advisories x86_64

Fixes

• BZ - 2348366 - CVE-2025-22868 golang.org/x/oauth2/jws: Unexpected memory consumption during token parsing in golang.org/x/oauth2/jws
• BZ - 2354195 - CVE-2025-30204 golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing

CVEs

• CVE-2019-12900
• CVE-2020-11023
• CVE-2024-8176
• CVE-2024-11187
• CVE-2024-12087
• CVE-2024-12088
• CVE-2024-12133
• CVE-2024-12243
• CVE-2024-12747
• CVE-2024-56171
• CVE-2025-0395
• CVE-2025-22868
• CVE-2025-24528
• CVE-2025-24928
• CVE-2025-30204

References

• https://access.redhat.com/security/updates/classification/#important