CVE-2023-44487

HighActively exploited (CISA KEV)

Description

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

SeverityHigh
CVSS7.5
Exploit probability100. percentile100%
ProductIETF HTTP/2
PublishedOct 10, 2023
Added to KEVOct 10, 2023

How to fix

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA due date: Oct 31, 2023
Update
  • siemens sinec_ins1.0 or later
  • siemens sinec_nms3.0 or later
  • siemens st7_scadaconnect1.1 or later
  • nghttp2 nghttp21.57.0 or later
  • netty netty4.1.100 or later
  • eclipse jetty9.4.53, 10.0.17, 11.0.17, 12.0.2 or later
  • caddyserver caddy2.7.5 or later
  • golang go1.20.10, 1.21.3 or later
  • golang http20.17.0 or later
  • golang networking0.17.0 or later
  • f5 nginx_plusr29 or later
  • apple swiftnio_http\/21.28.0 or later

Affected products

ProductAffected versionsFixed in
ietf http2.0—
siemens simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_firmware3.1.5 ≤ v—
siemens sinec_insv < 1.0, 1.01.0
siemens sinec_nmsv < 3.03.0
siemens st7_scadaconnectv < 1.11.1
siemens ruggedcom_ape1808_firmwareNo range specified—
siemens simatic_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware3.1.5 ≤ v—
siemens siplus_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware3.1.5 ≤ v—
nghttp2 nghttp2v < 1.57.01.57.0
netty nettyv < 4.1.1004.1.100
envoyproxy envoy1.24.10, 1.25.9, 1.26.4, 1.27.0—
eclipse jettyv < 9.4.53, 10.0.0 ≤ v < 10.0.17, 11.0.0 ≤ v < 11.0.17, 12.0.0 ≤ v < 12.0.29.4.53, 10.0.17, 11.0.17, 12.0.2
caddyserver caddyv < 2.7.52.7.5
golang gov < 1.20.10, 1.21.0 ≤ v < 1.21.31.20.10, 1.21.3
golang http2v < 0.17.00.17.0
golang networkingv < 0.17.00.17.0
f5 big-ip_access_policy_manager13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_advanced_firewall_manager13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_advanced_web_application_firewall13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_analytics13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_application_acceleration_manager13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_application_security_manager13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_application_visibility_and_reporting13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_carrier-grade_nat13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_ddos_hybrid_defender13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_domain_name_system13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_fraud_protection_service13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_global_traffic_manager13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_link_controller13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_local_traffic_manager13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_next20.0.1—
f5 big-ip_next_service_proxy_for_kubernetes1.5.0 ≤ v ≤ 1.8.2—
f5 big-ip_policy_enforcement_manager13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_ssl_orchestrator13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_webaccelerator13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 big-ip_websafe13.1.0 ≤ v ≤ 13.1.5, 14.1.0 ≤ v ≤ 14.1.5, 15.1.0 ≤ v ≤ 15.1.10, 16.1.0 ≤ v ≤ 16.1.4, 17.1.0—
f5 nginx1.9.5 ≤ v ≤ 1.25.2—
f5 nginx_ingress_controller2.0.0 ≤ v ≤ 2.4.2, 3.0.0 ≤ v ≤ 3.3.0—
f5 nginx_plusr25 ≤ v < r29, r29, r30r29
apache tomcat8.5.0 ≤ v ≤ 8.5.93, 9.0.0 ≤ v ≤ 9.0.80, 10.1.0 ≤ v ≤ 10.1.13, 11.0.0—
apple swiftnio_http\/2v < 1.28.01.28.0
grpc grpcv < 1.56.3, v ≤ 1.59.2, 1.58.0 ≤ v < 1.58.3, 1.57.01.56.3, 1.58.3
microsoft .net6.0.0 ≤ v < 6.0.23, 7.0.0 ≤ v < 7.0.126.0.23, 7.0.12
microsoft asp.net_core6.0.0 ≤ v < 6.0.23, 7.0.0 ≤ v < 7.0.126.0.23, 7.0.12
microsoft azure_kubernetes_servicev < 2023-10-082023-10-08
microsoft visual_studio_202217.0 ≤ v < 17.2.20, 17.4 ≤ v < 17.4.12, 17.6 ≤ v < 17.6.8, 17.7 ≤ v < 17.7.517.2.20, 17.4.12, 17.6.8, 17.7.5
microsoft windows_10_1607v < 10.0.14393.635110.0.14393.6351
microsoft windows_10_1809v < 10.0.17763.497410.0.17763.4974
microsoft windows_10_21h2v < 10.0.19044.357010.0.19044.3570
microsoft windows_10_22h2v < 10.0.19045.357010.0.19045.3570
microsoft windows_11_21h2v < 10.0.22000.253810.0.22000.2538
microsoft windows_11_22h2v < 10.0.22621.242810.0.22621.2428
microsoft windows_server_2016No range specified—
microsoft windows_server_2019No range specified—
microsoft windows_server_2022No range specified—
nodejs node.js18.0.0 ≤ v < 18.18.2, 20.0.0 ≤ v < 20.8.118.18.2, 20.8.1
microsoft cbl-marinerv < 2023-10-112023-10-11
dena h2ov < 2023-10-102023-10-10
facebook proxygenv < 2023.10.16.002023.10.16.00
apache apisixv < 3.6.13.6.1
apache traffic_server8.0.0 ≤ v < 8.1.9, 9.0.0 ≤ v < 9.2.38.1.9, 9.2.3
amazon opensearch_data_prepperv < 2.5.02.5.0
debian debian_linux10.0, 11.0, 12.0—
kazu-yamamoto http2v < 4.2.24.2.2
istio istiov < 1.17.6, 1.18.0 ≤ v < 1.18.3, 1.19.0 ≤ v < 1.19.11.17.6, 1.18.3, 1.19.1
varnish_cache_project varnish_cachev < 2023-10-102023-10-10
traefik traefikv < 2.10.5, 3.0.02.10.5
projectcontour contourv < 2023-10-112023-10-11
linkerd linkerd2.12.0 ≤ v ≤ 2.12.5, 2.13.0, 2.13.1, 2.14.0, 2.14.1—
linecorp armeriav < 1.26.01.26.0
redhat 3scale_api_management_platform2.0—
redhat advanced_cluster_management_for_kubernetes2.0—
redhat advanced_cluster_security3.0, 4.0—
redhat ansible_automation_platform2.0—
redhat build_of_optaplanner8.0—
redhat build_of_quarkusNo range specified—
redhat ceph_storage5.0—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2023-44487 · IETF HTTP/2 · Dark Radar