{"id":"CVE-2019-9512","published":"2019-08-13T20:50:59Z","modified":"2024-08-04T21:54:44Z","title":"Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service","vendor":null,"product":null,"tier":"core","eol":null,"description":{"text":"Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.","provenance":"source","from":"CVE.org"},"summary":{"text":"Some HTTP/2 implementations, with no specific vendor or product identified, are vulnerable to ping floods because they queue a response for every ping they receive, so continual pings from a remote attacker can exhaust CPU, memory, or both on the peer. The attack requires only network access to an HTTP/2 peer, with no authentication, configuration, or user interaction needed, and its effect depends on how efficiently the implementation queues those responses.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:17:33Z"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.83433,"percentile":0.99681,"date":"2026-10-28","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"references":[{"url":"https://kb.cert.org/vuls/id/605641/","tags":["third-party-advisory","x_refsource_CERT-VN"]},{"url":"https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md","tags":["x_refsource_MISC"]},{"url":"https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7%40%3Cdev.trafficserver.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030254c04%40%3Cusers.trafficserver.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d34b3c19%40%3Cannounce.trafficserver.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://seclists.org/bugtraq/2019/Aug/24","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"http://seclists.org/fulldisclosure/2019/Aug/16","tags":["mailing-list","x_refsource_FULLDISC"]},{"url":"https://www.synology.com/security/advisory/Synology_SA_19_33","tags":["x_refsource_CONFIRM"]},{"url":"https://seclists.org/bugtraq/2019/Aug/31","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"https://www.debian.org/security/2019/dsa-4503","tags":["vendor-advisory","x_refsource_DEBIAN"]},{"url":"https://support.f5.com/csp/article/K98053339","tags":["x_refsource_CONFIRM"]},{"url":"http://www.openwall.com/lists/oss-security/2019/08/20/1","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://security.netapp.com/advisory/ntap-20190823-0001/","tags":["x_refsource_CONFIRM"]},{"url":"https://security.netapp.com/advisory/ntap-20190823-0004/","tags":["x_refsource_CONFIRM"]},{"url":"https://security.netapp.com/advisory/ntap-20190823-0005/","tags":["x_refsource_CONFIRM"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/","tags":["vendor-advisory","x_refsource_FEDORA"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/","tags":["vendor-advisory","x_refsource_FEDORA"]},{"url":"https://seclists.org/bugtraq/2019/Aug/43","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"https://www.debian.org/security/2019/dsa-4508","tags":["vendor-advisory","x_refsource_DEBIAN"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/","tags":["vendor-advisory","x_refsource_FEDORA"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/","tags":["vendor-advisory","x_refsource_FEDORA"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2682","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://www.debian.org/security/2019/dsa-4520","tags":["vendor-advisory","x_refsource_DEBIAN"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2726","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://seclists.org/bugtraq/2019/Sep/18","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2594","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2661","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10296","tags":["x_refsource_CONFIRM"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2690","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2766","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2796","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2861","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2925","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2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(CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2019-9512","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":25.2,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.94,"detail":"percentile 0.9968"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":5.25,"detail":"base score 7.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"packageHistory":[{"cve":"CVE-2018-17847","published":"2018-10-01","fixed":"0.0.0-20190125002852-4b62a64f59f7","kev":false},{"cve":"CVE-2018-17848","published":"2018-10-01","fixed":"0.0.0-20190125002852-4b62a64f59f7","kev":false},{"cve":"CVE-2018-17846","published":"2018-10-01","fixed":"0.0.0-20190125091013-d26f9f9a57f3","kev":false,"link":{"from":"CVE-2018-17846","to":"CVE-2019-9512","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Go:golang.org/x/net","fromFixed":"0.0.0-20190125091013-d26f9f9a57f3","toFixed":"0.0.0-20190813141303-74dc4d7220e7","daysApart":316}]}},{"cve":"CVE-2019-9512","published":"2019-08-13","fixed":"0.0.0-20190813141303-74dc4d7220e7","kev":false},{"cve":"CVE-2019-9514","published":"2019-08-13","fixed":"0.0.0-20190813141303-74dc4d7220e7","kev":false},{"cve":"CVE-2021-31525","published":"2021-05-27","fixed":"0.0.0-20210428140749-89ef3d95e781","kev":false,"link":{"from":"CVE-2019-9512","to":"CVE-2021-31525","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Go:golang.org/x/net","fromFixed":"0.0.0-20190813141303-74dc4d7220e7","toFixed":"0.0.0-20210428140749-89ef3d95e781","daysApart":653}]}},{"cve":"CVE-2021-33194","published":"2021-05-26","fixed":"0.0.0-20210520170846-37e1c6afe023","kev":false}],"package":"Go:golang.org/x/net"}}