RHSA-2023:6137HighCVSS 7.5

Red Hat Security Advisory: Migration Toolkit for Runtimes security update

Published
October 26, 2023
Last Modified
August 18, 2026

🔗 CVE IDs covered (1)

CVE-2023-44487 →

📋 Description

CVE-2023-44487 — HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

🎯 Affected products16

  • Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-operator-bundle@sha256:13b3c51ad5aed90c1df7b98294baae889766c76c7c14fb952a6c0808980473ea_s390x as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-operator-bundle@sha256:a1656094f8f5b859d15e4be824e714478a028b18cf2c8acef38acbc9b35428fe_arm64 as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-operator-bundle@sha256:a34d7e0a9c5064a9a61d297dec40dca605e7a2dd933a1b6bde445f1dfdda6003_ppc64le as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-operator-bundle@sha256:d625ba8a43c5e2f672fc1eacf894792cb11be7397a7678ae768dfb37f5feaf29_amd64 as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-rhel8-operator@sha256:8b69faaf8c6d271bdc915cbeaf8e8aba924ab061d5c46aaacb17db8adcfadb84_amd64 as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-rhel8-operator@sha256:a4a3645358bca40d262ab0e796d5462c1bbc34be1d6fed6ecb0d09e4ac55f7a6_ppc64le as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-rhel8-operator@sha256:aa640165558c9f5e916db580b354a358c167eae36597439b5c393d9686b9be6f_arm64 as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-rhel8-operator@sha256:f55c866e421df052ccacb5145893fc6fe0a42f3d5d224123b0c9bfdde6495001_s390x as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-web-container-rhel8@sha256:1165d0a18300b3ca0a432311e392aacbac822e5efe1d2e01429907b248f81774_s390x as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-web-container-rhel8@sha256:12bb394a495be9cd01d5038256299462e5ec93ba4b593e60687f23f9f75090f1_ppc64le as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-web-container-rhel8@sha256:c3e0a56a743b64e197f24898c847825102ec9309a97112906cb03a1c3f9f93e6_amd64 as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-web-executor-container-rhel8@sha256:91fb192d6b10008cb42d014c1c6a31fca5a21bbe033ef7694ff487f291a828b9_arm64 as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-web-executor-container-rhel8@sha256:ae7617841e45fb30cd8880ca48481b8451a203d63e06bc69c54f18152c034a53_ppc64le as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-web-executor-container-rhel8@sha256:dd3df81b45579bf9cd1480922504ddf85dd09c5d8d99de5b0a1886b3fb6e02c2_amd64 as a component of Migration Toolkit for Runtimes 1 on RHEL 8
  • mtr/mtr-web-executor-container-rhel8@sha256:deb6fa4f9b3f4ac7356383dee6137558c842af367f275f72c27ba04104f95d4a_s390x as a component of Migration Toolkit for Runtimes 1 on 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: 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)