RHSA-2023:6122 - Security Advisory

Topic

Red Hat Advanced Cluster Management for Kubernetes 2.8.3 General Availability release images, which provide security updates and fix bugs.

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

Red Hat Advanced Cluster Management for Kubernetes 2.8.3 images

Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in.

This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which address security issues and fix several bugs. See the Release Notes link in the References section, which will be updated shortly, for additional details about this release.

Security Fix(es):

• golang: net/http, x/net/http2: rapid stream resets can cause excessive work (Rapid Reset Attack) (CVE-2023-39325)
• HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)

A Red Hat Security Bulletin which addresses further details about the Rapid Reset flaw is available in the References section.

• golang: html/template: improper handling of HTML-like comments within script contexts (CVE-2023-39318)
• golang: html/template: improper handling of special tags within script contexts (CVE-2023-39319)
• golang: crypto/tls: panic when processing post-handshake message on QUIC connections (CVE-2023-39321)
• golang: crypto/tls: lack of a limit on buffered post-handshake (CVE-2023-39322)

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 Red Hat Advanced Cluster Management for Kubernetes, see the following
documentation, which will be updated shortly for this release, for important
instructions on installing this release:

https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.8/html-single/install/index#installing

Affected Products

• Red Hat Advanced Cluster Management for Kubernetes 2 for RHEL 8 x86_64

Fixes

• BZ - 2237773 - CVE-2023-39319 golang: html/template: improper handling of special tags within script contexts
• BZ - 2237776 - CVE-2023-39318 golang: html/template: improper handling of HTML-like comments within script contexts
• BZ - 2237777 - CVE-2023-39321 golang: crypto/tls: panic when processing post-handshake message on QUIC connections
• BZ - 2237778 - CVE-2023-39322 golang: crypto/tls: lack of a limit on buffered post-handshake
• BZ - 2242803 - CVE-2023-44487 HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)
• BZ - 2243296 - CVE-2023-39325 golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487)
• HYPBLD-146 - ACM 2.8.3 Images

CVEs

• CVE-2023-4527
• CVE-2023-4806
• CVE-2023-4813
• CVE-2023-4911
• CVE-2023-39318
• CVE-2023-39319
• CVE-2023-39321
• CVE-2023-39322
• CVE-2023-39325
• CVE-2023-40217
• CVE-2023-44487

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/security/vulnerabilities/RHSB-2023-003
• https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.8/html/release_notes/