RHSA-2023:4862 - Security Advisory

Topic

Multicluster Engine for Kubernetes 2.3.1 General Availability release images, which contain security updates and fix bugs.

Red Hat Product Security has rated this update as having a security impact
of Critical. 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 2.3.1 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):

• CVE-2023-3089 openshift: OCP & FIPS mode
• CVE-2023-37903 - vm2: custom inspect function allows attackers to escape the

sandbox and run arbitrary code

• CVE-2023-37466 - vm2: Promise handler sanitization can be bypassed allowing

attackers to escape the sandbox and run arbitrary code

Solution

For information and instructions for these updates, see the following article: https://access.redhat.com/solutions/7022540.

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

https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.8/html/clusters/cluster_mce_overview#installing-while-connected-online-mce

Affected Products

• multicluster engine for Kubernetes Text-only Advisories x86_64

Fixes

• BZ - 2212085 - CVE-2023-3089 openshift: OCP & FIPS mode
• BZ - 2224969 - CVE-2023-37903 vm2: custom inspect function allows attackers to escape the sandbox and run arbitrary code
• BZ - 2232376 - CVE-2023-37466 vm2: Promise handler sanitization can be bypassed allowing attackers to escape the sandbox and run arbitrary code

CVEs

• CVE-2023-3089
• CVE-2023-37466
• CVE-2023-37903

References

• https://access.redhat.com/security/updates/classification/#critical
• https://access.redhat.com/security/vulnerabilities/RHSB-2023-001