RHSA-2023:6839HighCVSS 7.5

Red Hat Security Advisory: OpenShift Container Platform 4.14.2 security update

Published
November 16, 2023
Last Modified
September 14, 2026

🔗 CVE IDs covered (2)

CVE-2023-39325 →CVE-2023-44487 →

📋 Description

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

🎯 Affected products9

  • Red Hat OpenShift Container Platform 4.14
  • microshift-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.14
  • microshift-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.src as a component of Red Hat OpenShift Container Platform 4.14
  • microshift-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.14
  • microshift-greenboot-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.noarch as a component of Red Hat OpenShift Container Platform 4.14
  • microshift-networking-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.14
  • microshift-networking-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.14
  • microshift-release-info-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.noarch as a component of Red Hat OpenShift Container Platform 4.14
  • microshift-selinux-0:4.14.2-202311091609.p0.gd80d6de.assembly.4.14.2.el9.noarch as a component of Red Hat OpenShift Container Platform 4.14

✅ Remediation

MicroShift 4.14.2 - RPMs For MicroShift 4.14, read the following documentation, which will be updated shortly for this release, for important instructions on how to install the latest RPMs and fully apply this asynchronous errata update: https://access.redhat.com/documentation/en-us/red_hat_build_of_microshift/4.14/html/release_notes/index Workaround: The default stream concurrency limit in golang is 250 streams (requests) per HTTP/2 connection. This value may be adjusted in the golang.org/x/net/http2 package using the Server.MaxConcurrentStreams setting and the ConfigureServer function which are available in golang.org/x/net/http2. Workaround: Users are strongly urged to update their software as soon as fixes are available. There are several mitigation approaches for this flaw. 1. If circumstances permit, users may disable http2 endpoints to circumvent the flaw altogether until a fix is available. 2. IP-based blocking or flood protection and rate control tools may be used at network endpoints to filter incoming traffic. 3. Several package specific mitigations are also available. a. nginx: https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/ b. netty: https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p c. haproxy: https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487 d. nghttp2: https://github.com/nghttp2/nghttp2/security/advisories/GHSA-vx74-f528-fxqg e. golang: The default stream concurrency limit in golang is 250 streams (requests) per HTTP/2 connection. This value may be adjusted in the golang.org/x/net/http2 package using the Server.MaxConcurrentStreams setting and the ConfigureServer function which are available in golang.org/x/net/http2.

🔗 References (9)