RHSA-2023:6784HighCVSS 7.5

Red Hat Security Advisory: Node Health Check Operator 0.6.1 security update

Published
November 8, 2023
Last Modified
September 20, 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 products5

  • Node Healthcheck Operator 0.6 for RHEL 8
  • workload-availability/node-healthcheck-must-gather-rhel8@sha256:29aa40527f9d289cb41939db052a658a4fdd949006854a3bab5aa41fd783d28d_amd64 as a component of Node Healthcheck Operator 0.6 for RHEL 8
  • workload-availability/node-healthcheck-operator-bundle@sha256:309ba89dece3ee9901ed66c40bd28d71f20c7d91a7feff552e28ea0c772b9178_amd64 as a component of Node Healthcheck Operator 0.6 for RHEL 8
  • workload-availability/node-healthcheck-rhel8-operator@sha256:b0035ef85a042b920d1aa53e86d390b06066d3cf6bb85956a28fa4480c324658_amd64 as a component of Node Healthcheck Operator 0.6 for RHEL 8
  • workload-availability/node-remediation-console-rhel8@sha256:154ce9bd17e6809c283526ff0fb2e7f37da86e1703d13e18c741928850e67716_amd64 as a component of Node Healthcheck Operator 0.6 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)