RHSA-2023:6077MediumCVSS 7.5

Red Hat Security Advisory: toolbox security update

Published
October 24, 2023
Last Modified
September 19, 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 products18

  • Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-0:0.0.99.3-10.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-0:0.0.99.3-10.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-0:0.0.99.3-10.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-0:0.0.99.3-10.el9_2.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-0:0.0.99.3-10.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debuginfo-0:0.0.99.3-10.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debuginfo-0:0.0.99.3-10.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debuginfo-0:0.0.99.3-10.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debuginfo-0:0.0.99.3-10.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debugsource-0:0.0.99.3-10.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debugsource-0:0.0.99.3-10.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debugsource-0:0.0.99.3-10.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-debugsource-0:0.0.99.3-10.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-tests-0:0.0.99.3-10.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-tests-0:0.0.99.3-10.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-tests-0:0.0.99.3-10.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • toolbox-tests-0:0.0.99.3-10.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)

✅ Remediation

The container image provided by this update can be downloaded from the Red Hat container registry at registry.redhat.io or registry.access.redhat.com using the "podman pull" command. For more information about the image, search the <image_name> in the Red Hat Ecosystem Catalog: https://catalog.redhat.com/software/containers/search. 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 (7)