{"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":"2026-04-16T00:02:49.712983848Z","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"],"references":[{"type":"WEB","url":"https://kb.cert.org/vuls/id/605641/"},{"type":"WEB","url":"https://lists.apache.org/thread.html/4610762456644181b267c846423b3a990bd4aaea1886ecc7d51febdb%40%3Cannounce.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/d89f999e26dfb1d50f247ead1fe8538014eb412b2dbe5be4b1a9ef50%40%3Cdev.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ec97fdfc1a859266e56fef084353a34e0a0b08901b3c1aa317a43c8c%40%3Cdev.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r03ee478b3dda3e381fd6189366fa7af97c980d2f602846eef935277d%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rd2fb621142e7fa187cfe12d7137bf66e7234abcbbcd800074c84a538%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BP556LEG3WENHZI5TAQ6ZEBFTJB4E2IS/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHTKU7YQ5EEP2XNSAV4M4VJ7QCBOJMOD/"},{"type":"WEB","url":"https://support.f5.com/csp/article/K02591030?utm_source=f5support&amp%3Butm_medium=RSS"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00004.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2019/08/15/7"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2893"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2925"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2939"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2946"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2949"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2950"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2955"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3932"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3933"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3935"},{"type":"ADVISORY","url":"https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"},{"type":"ADVISORY","url":"https://kb.cert.org/vuls/id/605641/"},{"type":"ADVISORY","url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10296"},{"type":"ADVISORY","url":"https://seclists.org/bugtraq/2019/Aug/47"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201909-04"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190823-0003/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190823-0005/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190905-0003/"},{"type":"ADVISORY","url":"https://support.f5.com/csp/article/K02591030"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4113-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4509"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpuapr2020.html"},{"type":"ADVISORY","url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"},{"type":"ADVISORY","url":"https://www.synology.com/security/advisory/Synology_SA_19_33"},{"type":"FIX","url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00004.html"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2019/08/15/7"},{"type":"ARTICLE","url":"https://seclists.org/bugtraq/2019/Aug/47"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nodejs/node","events":[{"introduced":"2f45ad8060e13d5ac912335096d21526f2f9602b"},{"fixed":"787378879acfb212ed4ff824bf9f767a24a5cb43"},{"introduced":"ab4af087e83d91a46354d765306d3543b1d85423"},{"fixed":"75657ee41677d56a498e298b01d049aef5bf199f"},{"introduced":"f6fc46e03674ab1896792b7363ecac0665b5e0c5"},{"fixed":"eb66efd6052801e2f10360c51787569da0185808"},{"introduced":"f76ce0a75641991bfc235775a4747c978e0e281b"},{"fixed":"5744b466c45d5324c60f122b02681813d4496749"}]}],"versions":["v10.13.0","v10.14.0","v10.14.1","v10.14.2","v10.15.0","v10.15.1","v10.15.2","v10.15.3","v10.16.0","v10.16.1","v10.16.2","v12.0.0","v12.1.0","v12.2.0","v12.3.0","v12.3.1","v12.4.0","v12.5.0","v12.6.0","v12.7.0","v12.8.0","v8.1.0","v8.1.1","v8.1.2","v8.1.3","v8.1.4"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-9517.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}