CVE-2019-9518

HIGH

SwiftNIO 1.0.0-1.3.9 - Denial of Service via HTTP/2 Empty Frame Flood

Title source: llm
STIX 2.1

Description

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.

References (27)

Core 27
Core References
Third Party Advisory, US Government Resource third-party-advisory x_refsource_cert-vn
https://kb.cert.org/vuls/id/605641/
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Aug/24
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2019/Aug/16
Third Party Advisory x_refsource_confirm
https://www.synology.com/security/advisory/Synology_SA_19_33
Third Party Advisory x_refsource_confirm
https://support.f5.com/csp/article/K46011592
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190823-0005/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4520
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Sep/18
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
Third Party Advisory x_refsource_confirm
https://kc.mcafee.com/corporate/index?page=content&id=SB10296
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2925
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2939
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2955
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3892
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:4352
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0727

Scores

CVSS v3 7.5
EPSS 0.0365
EPSS Percentile 88.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-770 CWE-400
Status published
Products (25)
apache/traffic_server 6.0.0 - 6.2.3
apple/swiftnio 1.0.0 - 1.4.0
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.04
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 29
fedoraproject/fedora 30
mcafee/web_gateway 7.7.2.0 - 7.7.2.24
... and 15 more
Published Aug 13, 2019
Tracked Since Feb 18, 2026