RHSA-2023:6783HighCVSS 7.5

Red Hat Security Advisory: Node Health Check Operator 0.4.1

Published
November 8, 2023
Last Modified
September 21, 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 products4

  • Node Healthcheck Operator 0.4 for RHEL 8
  • workload-availability/node-healthcheck-operator-bundle@sha256:151e7d9bc500b7252af46d0856e3e16559ff310a1d0efedcc5d914164bbdef55_amd64 as a component of Node Healthcheck Operator 0.4 for RHEL 8
  • workload-availability/node-healthcheck-rhel8-operator@sha256:1e69fca94c72373f8034b4914e113e23e418f2c1b227d7ea0c8af3dcb63187a6_amd64 as a component of Node Healthcheck Operator 0.4 for RHEL 8
  • workload-availability/node-remediation-console-rhel8@sha256:c4a6e43c9d96f8dbe743db5af83495d9350ef8ac45e3adbec0fbbc53db40502a_amd64 as a component of Node Healthcheck Operator 0.4 for RHEL 8

✅ Remediation

Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 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 (6)