{"id":"CVE-2019-9518","details":"Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.","modified":"2026-07-10T12:01:22.466630685Z","published":"2019-08-13T21:15:13.003Z","related":["ALSA-2019:2925","SUSE-SU-2019:14246-1","SUSE-SU-2019:2254-1","SUSE-SU-2019:2259-1","SUSE-SU-2019:2260-1","SUSE-SU-2020:0059-1","openSUSE-SU-2019:2114-1","openSUSE-SU-2019:2115-1"],"database_specific":{"unresolved_ranges":[{"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","vendor_product":"mcafee:web_gateway","cpes":["cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*"],"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: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"}],"source":"CPE_STRING","vendor_product":"canonical:ubuntu_linux"},{"source":"CPE_STRING","vendor_product":"debian:debian_linux","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":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"29"},{"last_affected":"29"},{"introduced":"30"},{"last_affected":"30"}]},{"source":"CPE_STRING","vendor_product":"opensuse:leap","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"}]},{"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":"redhat:enterprise_linux","cpes":["cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"}]},{"extracted_events":[{"introduced":"1.0"},{"last_affected":"1.0"}],"source":"CPE_STRING","vendor_product":"redhat:jboss_core_services","cpes":["cpe:2.3:a:redhat:jboss_core_services:1.0:*:*:*:*:*:*:*"]},{"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"},{"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"}]},{"source":"CPE_STRING","vendor_product":"redhat:quay","cpes":["cpe:2.3:a:redhat:quay:3.0.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"3.0.0"},{"last_affected":"3.0.0"}]},{"vendor_product":"redhat:software_collections","cpes":["cpe:2.3:a:redhat:software_collections:1.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"1.0"},{"last_affected":"1.0"}],"source":"CPE_STRING"},{"cpes":["cpe:2.3:o:synology:diskstation_manager:6.2:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"6.2"},{"last_affected":"6.2"}],"source":"CPE_STRING","vendor_product":"synology:diskstation_manager"}]},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/091b518265bce56a16af87b77c8cfacda902a02079e866f9fdf13b61%40%3Cusers.trafficserver.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/2653c56545573b528f3f6352a29eccaf498bd6fb2a6a59568d81a61d%40%3Cannounce.trafficserver.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ff5b0821a6985159a832ff6d1a4bd311ac07ecc7db1e2d8bab619107%40%3Cdev.trafficserver.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r99a625fb17032646d96cd23dec49603ff630e9318e44a686d63046bc%40%3Ccommits.cassandra.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rd31230d01fa6aad18bdadc0720acd1747e53690bd35f73a48e7a9b75%40%3Ccommits.cassandra.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproje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