RHSA-2023:6042HighCVSS 7.5

Red Hat Security Advisory: Self Node Remediation Operator 0.5.1 security update

Published
October 23, 2023
Last Modified
September 22, 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

  • Self Node Remediation 0.5 for RHEL 8
  • workload-availability/self-node-remediation-must-gather-rhel8@sha256:0abf7c74783c4c310937b63cf6f2965e8eb076007691176ee4d7e76b956257c2_amd64 as a component of Self Node Remediation 0.5 for RHEL 8
  • workload-availability/self-node-remediation-operator-bundle@sha256:36561e5888cd34f8fb83ceff2910141fceaa6ea290bd246125930fe183e2ebc3_amd64 as a component of Self Node Remediation 0.5 for RHEL 8
  • workload-availability/self-node-remediation-rhel8-operator@sha256:8f1d095530f102c6edbcb53a9c2685a043a9c9869b7ca6c1d254dd74ee17b0a3_amd64 as a component of Self Node Remediation 0.5 for RHEL 8

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, 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 (5)