--- id: CVE-2019-9512 title: >- Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service summary: >- 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 effic… severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H' cwe: - CWE-400 vendor: apple product: swiftnio affected: - 'swiftnio >= 1.0.0, <= 1.4.0' - 'traffic_server >= 6.0.0, <= 6.2.3' - 'traffic_server >= 7.0.0, <= 7.1.6' - 'traffic_server >= 8.0.0, <= 8.0.3' - debian_linux = 10.0 - 'node.js >= 8.0.0, <= 8.8.1' - 'node.js >= 8.9.0, < 8.16.1' - 'node.js >= 10.0.0, <= 10.12.0' - 'node.js >= 10.13.0, < 10.16.3' - 'node.js >= 12.0.0, < 12.8.1' patched: - node.js 12.8.1 published: '2019-08-13' updated: '2026-06-17' sourceUpdated: '2026-06-17T02:43:51.673' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-9512' references: - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html' label: cret@cert.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html' label: cret@cert.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html' label: cret@cert.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html' label: cret@cert.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html' label: cret@cert.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html' label: cret@cert.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html' label: cret@cert.org - url: 'http://seclists.org/fulldisclosure/2019/Aug/16' label: cret@cert.org - url: 'http://www.openwall.com/lists/oss-security/2019/08/20/1' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2594' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2661' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2682' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2690' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2726' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2766' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2769' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2796' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2861' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2925' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2939' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2955' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:2966' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:3131' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:3245' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:3265' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:3892' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:3906' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4018' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4019' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4020' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4021' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4040' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4041' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4042' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4045' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4269' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4273' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2019:4352' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2020:0406' label: cret@cert.org - url: 'https://access.redhat.com/errata/RHSA-2020:0727' label: cret@cert.org - url: >- https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md label: cret@cert.org - url: 'https://kb.cert.org/vuls/id/605641/' label: cret@cert.org - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10296' label: cret@cert.org - url: >- https://lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030254c04%40%3Cusers.trafficserver.apache.org%3E label: cret@cert.org - url: >- https://lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d34b3c19%40%3Cannounce.trafficserver.apache.org%3E label: cret@cert.org - url: >- https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7%40%3Cdev.trafficserver.apache.org%3E label: cret@cert.org - url: 'https://lists.debian.org/debian-lts-announce/2020/12/msg00011.html' label: cret@cert.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/ label: cret@cert.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/ label: cret@cert.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/ label: cret@cert.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/ label: cret@cert.org - url: 'https://seclists.org/bugtraq/2019/Aug/24' label: cret@cert.org - url: 'https://seclists.org/bugtraq/2019/Aug/31' label: cret@cert.org - url: 'https://seclists.org/bugtraq/2019/Aug/43' label: cret@cert.org - url: 'https://seclists.org/bugtraq/2019/Sep/18' label: cret@cert.org - url: 'https://security.netapp.com/advisory/ntap-20190823-0001/' label: cret@cert.org - url: 'https://security.netapp.com/advisory/ntap-20190823-0004/' label: cret@cert.org - url: 'https://security.netapp.com/advisory/ntap-20190823-0005/' label: cret@cert.org - url: 'https://support.f5.com/csp/article/K98053339' label: cret@cert.org - url: >- https://support.f5.com/csp/article/K98053339?utm_source=f5support&%3Butm_medium=RSS label: cret@cert.org - url: 'https://usn.ubuntu.com/4308-1/' label: cret@cert.org - url: 'https://www.debian.org/security/2019/dsa-4503' label: cret@cert.org - url: 'https://www.debian.org/security/2019/dsa-4508' label: cret@cert.org - url: 'https://www.debian.org/security/2019/dsa-4520' label: cret@cert.org - url: 'https://www.synology.com/security/advisory/Synology_SA_19_33' label: cret@cert.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://seclists.org/fulldisclosure/2019/Aug/16' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.openwall.com/lists/oss-security/2019/08/20/1' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:2594' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:2661' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:2682' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:2690' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:2726' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:2766' label: af854a3a-2127-422b-91ae-364da2661108 - 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url: 'https://access.redhat.com/errata/RHSA-2019:3892' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:3906' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4018' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4019' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4020' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4021' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4040' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4041' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4042' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4045' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4269' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4273' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:4352' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2020:0406' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2020:0727' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://kb.cert.org/vuls/id/605641/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10296' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030254c04%40%3Cusers.trafficserver.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d34b3c19%40%3Cannounce.trafficserver.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7%40%3Cdev.trafficserver.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2020/12/msg00011.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/ label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2019/Aug/24' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2019/Aug/31' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2019/Aug/43' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2019/Sep/18' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20190823-0001/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20190823-0004/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20190823-0005/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://support.f5.com/csp/article/K98053339' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://support.f5.com/csp/article/K98053339?utm_source=f5support&%3Butm_medium=RSS label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://usn.ubuntu.com/4308-1/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2019/dsa-4503' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2019/dsa-4508' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2019/dsa-4520' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.synology.com/security/advisory/Synology_SA_19_33' label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd - cve.org ingestedAt: '2026-09-14T13:51:46.827Z' epss: 0.83433 epssPercentile: 0.99668 --- ## Overview 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. ## Affected - `swiftnio >= 1.0.0, <= 1.4.0` - `traffic_server >= 6.0.0, <= 6.2.3` - `traffic_server >= 7.0.0, <= 7.1.6` - `traffic_server >= 8.0.0, <= 8.0.3` - `debian_linux = 10.0` - `node.js >= 8.0.0, <= 8.8.1` - `node.js >= 8.9.0, < 8.16.1` - `node.js >= 10.0.0, <= 10.12.0` - `node.js >= 10.13.0, < 10.16.3` - `node.js >= 12.0.0, < 12.8.1` ## Remediation Upgrade past the affected range: - `node.js 12.8.1`