{"id":"CVE-2019-9517","details":"Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.","modified":"2026-07-10T12:01:25.260609778Z","published":"2019-08-13T21:15:12.647Z","related":["ALSA-2019:2925","SUSE-SU-2019:14246-1","SUSE-SU-2019:2237-1","SUSE-SU-2019:2254-1","SUSE-SU-2019:2259-1","SUSE-SU-2019:2260-1","SUSE-SU-2019:2329-1","SUSE-SU-2020:0059-1","openSUSE-SU-2019:2051-1","openSUSE-SU-2019:2114-1","openSUSE-SU-2019:2115-1","openSUSE-SU-2024:10623-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"mcafee:web_gateway","cpes":["cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.7.2.0"},{"fixed":"7.7.2.24"},{"introduced":"7.8.2.0"},{"fixed":"7.8.2.13"},{"introduced":"8.1.0"},{"fixed":"8.2.0"}],"source":"CPE_RANGE"},{"extracted_events":[{"introduced":"8.0.0"},{"last_affected":"8.8.1"},{"introduced":"8.9.0"},{"fixed":"8.16.1"},{"introduced":"10.0.0"},{"last_affected":"10.12.0"},{"introduced":"10.13.0"},{"fixed":"10.16.3"},{"introduced":"12.0.0"},{"fixed":"12.8.1"}],"source":"CPE_RANGE","vendor_product":"nodejs:node.js","cpes":["cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*"]},{"cpes":["cpe:2.3:a:oracle:instantis_enterprisetrack:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"17.1"},{"last_affected":"17.3"}],"source":"CPE_RANGE","vendor_product":"oracle:instantis_enterprisetrack"},{"source":"CPE_STRING","vendor_product":"canonical:ubuntu_linux","cpes":["cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"16.04"},{"last_affected":"16.04"},{"introduced":"18.04"},{"last_affected":"18.04"},{"introduced":"19.04"},{"last_affected":"19.04"}]},{"cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"9.0"},{"last_affected":"9.0"},{"introduced":"10.0"},{"last_affected":"10.0"}],"source":"CPE_STRING","vendor_product":"debian:debian_linux"},{"extracted_events":[{"introduced":"29"},{"last_affected":"29"},{"introduced":"30"},{"last_affected":"30"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*","cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"15.0"},{"last_affected":"15.0"},{"introduced":"15.1"},{"last_affected":"15.1"}],"source":"CPE_STRING","vendor_product":"opensuse:leap"},{"cpes":["cpe:2.3:a:oracle:communications_element_manager:8.0.0:*:*:*:*:*:*:*","cpe:2.3:a:oracle:communications_element_manager:8.1.0:*:*:*:*:*:*:*","cpe:2.3:a:oracle:communications_element_manager:8.1.1:*:*:*:*:*:*:*","cpe:2.3:a:oracle:communications_element_manager:8.2.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0.0"},{"last_affected":"8.0.0"},{"introduced":"8.1.0"},{"last_affected":"8.1.0"},{"introduced":"8.1.1"},{"last_affected":"8.1.1"},{"introduced":"8.2.0"},{"last_affected":"8.2.0"}],"source":"CPE_STRING","vendor_product":"oracle:communications_element_manager"},{"cpes":["cpe:2.3:a:oracle:graalvm:19.2.0:*:*:*:enterprise:*:*:*"],"extracted_events":[{"introduced":"19.2.0"},{"last_affected":"19.2.0"}],"source":"CPE_STRING","vendor_product":"oracle:graalvm"},{"source":"CPE_STRING","vendor_product":"oracle:retail_xstore_point_of_service","cpes":["cpe:2.3:a:oracle:retail_xstore_point_of_service:7.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.1"},{"last_affected":"7.1"}]},{"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux","cpes":["cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:a:redhat:jboss_core_services:1.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"1.0"},{"last_affected":"1.0"}],"source":"CPE_STRING","vendor_product":"redhat:jboss_core_services"},{"source":"CPE_STRING","vendor_product":"redhat:jboss_enterprise_application_platform","cpes":["cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.2.0:*:*:*:*:*:*:*","cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.2.0"},{"last_affected":"7.2.0"},{"introduced":"7.3.0"},{"last_affected":"7.3.0"}]},{"source":"CPE_STRING","vendor_product":"redhat:openshift_service_mesh","cpes":["cpe:2.3:a:redhat:openshift_service_mesh:1.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"1.0"},{"last_affected":"1.0"}]},{"extracted_events":[{"introduced":"3.0.0"},{"last_affected":"3.0.0"}],"source":"CPE_STRING","vendor_product":"redhat:quay","cpes":["cpe:2.3:a:redhat:quay:3.0.0:*:*:*:*:*:*:*"]},{"source":"CPE_STRING","vendor_product":"redhat:software_collections","cpes":["cpe:2.3:a:redhat:software_collections:1.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"1.0"},{"last_affected":"1.0"}]},{"extracted_events":[{"introduced":"6.2"},{"last_affected":"6.2"}],"source"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