RHSA-2023:6787HighCVSS 7.5

Red Hat Security Advisory: Network Observability 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 products21

  • NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-console-plugin-rhel9@sha256:95368eb313a5a252a63f567ebf8a51ca07793a8e9147bae99ed69f80ea305e6f_arm64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-console-plugin-rhel9@sha256:a60a5f1b256d627d156d5b6554b0031380e62866a90963c7933ce87b21f83491_amd64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-console-plugin-rhel9@sha256:ee3f049527626d646f81d0a16d1911f0efe71c9286ae657429c9f0f6c6c505e3_ppc64le as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-console-plugin-rhel9@sha256:f6be4953742e271e6507aa91a8ed976d7dfd68c3b9634382b18d47bb5d968ddf_s390x as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-ebpf-agent-rhel9@sha256:63c6d967f4c2ec9a5047be4c5e02676d80243dbc3cc6bad508e6b3162a631be9_s390x as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-ebpf-agent-rhel9@sha256:6da9818638f28ca862681a668e38651ebeee18661738ae8346cbd0ecb13d4288_amd64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-ebpf-agent-rhel9@sha256:8ac8ae32fae59ae22688a6772eb77245b24b6dbe55fc309bd31395b006cbdfad_ppc64le as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-ebpf-agent-rhel9@sha256:d5a86121d054b9ea8a7b7ccead3a42d4b9e5c17929e188b8bd780517ceb7d96e_arm64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-flowlogs-pipeline-rhel9@sha256:26c5d2dc469ae8688abb5b87041f00d342a8542e810b1828af29781faef300a4_s390x as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-flowlogs-pipeline-rhel9@sha256:51049a42b3f3f75a2dc670f3fa026a1d68280664a0ef47c3ad2fdfdb97c25611_amd64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-flowlogs-pipeline-rhel9@sha256:6620a766d61fc0395a2557fc0920f54a151d605dc932ca26fe78cfe0193c9c1c_ppc64le as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-flowlogs-pipeline-rhel9@sha256:83858e6e99d9669b5a8766aac010ca50df6df056496367f501d8268de5d4df82_arm64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-operator-bundle@sha256:1223ca28b4bbe5c4f46fdcfd0c58794034408f5c86c87e5b6eab6c140d48017d_s390x as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-operator-bundle@sha256:8e2171ae86ab9e78bf7827dd33cbdaaf5a4ff566da50bb7f659f613258712090_ppc64le as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-operator-bundle@sha256:cfc16fa970403528771979f8e509660918c32d1532ae419824cc81348cee4132_arm64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-operator-bundle@sha256:dc8f77f41b077986639b3f594f9e5eb3bf56dad90bed1927921f973c4171ba68_amd64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-rhel9-operator@sha256:2b99cf0df552ca77d35e8fd8e2e6c81938369c59241697f6220c40df27b9cd54_amd64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-rhel9-operator@sha256:4c49b198ec1c97aeec39dd445b30e96af12f43a74166da53a63c11617c69a0b9_arm64 as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-rhel9-operator@sha256:63f7b3fe3fde774f8b8b76b8eb17b3c62220bf3270320349942ab042518e1515_s390x as a component of NETOBSERV 1.4 for RHEL 9
  • network-observability/network-observability-rhel9-operator@sha256:8e560f63a3bab2a6256dc6f1c5b8c88afc7f4a7210fef2986e02d2b1018a66b7_ppc64le as a component of NETOBSERV 1.4 for RHEL 9

✅ Remediation

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 (5)