Important: ACS 4.0 enhancement and security update

Topic

Updated images are now available for Red Hat Advanced Cluster Security (RHACS). The updated image includes security and bug fixes.

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 link(s) in the References section.

Description

This release of RHACS 4.0.2 includes security fixes for CVE-2023-24540, CVE-2023-24539 and CVE-2023-29400 by building RHACS with updated Golang builder. If you are using an earlier version of RHACS 4.0, you are advised to upgrade to this patch release 4.0.2.

Security Issue(s) fixed:

• golang: html/template: improper sanitization of CSS values (CVE-2023-24539)
• golang: html/template: improper handling of JavaScript whitespace (CVE-2023-24540)
• golang: html/template: improper handling of empty HTML attributes (CVE-2023-29400)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Advanced Cluster Security for Kubernetes 4 x86_64
• Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4 s390x
• Red Hat Advanced Cluster Security for Kubernetes for IBM Power, little endian 4 ppc64le

Fixes

• BZ - 2196026 - CVE-2023-24539 golang: html/template: improper sanitization of CSS values
• BZ - 2196027 - CVE-2023-24540 golang: html/template: improper handling of JavaScript whitespace
• BZ - 2196029 - CVE-2023-29400 golang: html/template: improper handling of empty HTML attributes
• ROX-17407 - Release RHACS 4.0.2

CVEs

• CVE-2023-24539
• CVE-2023-24540
• CVE-2023-29400

References

• https://access.redhat.com/security/updates/classification/#important
• https://docs.openshift.com/acs/4.0/release_notes/40-release-notes.html