CVE-2019-9518

HIGHScheduled

Published:Aug 13, 2019(6 years ago)

Modified:Jan 14, 2025

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability 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.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

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AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
apple	swiftnio	1.0.0 - 1.4.0	-
apache	traffic_server	6.0.0 - 6.2.3	-
apache	traffic_server	7.0.0 - 7.1.6

Timeline

Published
CVE disclosed publicly
Aug 13, 20196 years ago
Last Modified
Most recent update
Jan 14, 20251 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031....Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032....Mailing List
http://seclists.org/fulldisclosure/2019/Aug/16Mailing List

CVSS Score

v3.1

7.5/ 10.0

HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

At a Glance

Affected Products

References

apple / swiftnio

https://access.redhat.com/errata/RHSA-2019:2925Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:2939Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:2955Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:3892Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:4352Third Party Advisory

https://access.redhat.com/errata/RHSA-2020:0727Third Party Advisory

https://github.com/Netflix/security-bulletins/blob/master/advisories/t...Third Party Advisory

https://kb.cert.org/vuls/id/605641/Third Party Advisory

https://kc.mcafee.com/corporate/index?page=content&id=SB10296Third Party Advisory

https://lists.apache.org/thread.html/091b518265bce56a16af87b77c8cfacda...

https://lists.apache.org/thread.html/2653c56545573b528f3f6352a29eccaf4...

https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8dae...

https://lists.apache.org/thread.html/ff5b0821a6985159a832ff6d1a4bd311a...

https://lists.apache.org/thread.html/r99a625fb17032646d96cd23dec49603f...

https://lists.apache.org/thread.html/rd31230d01fa6aad18bdadc0720acd174...

https://lists.fedoraproject.org/archives/list/package-announce%40lists...

https://seclists.org/bugtraq/2019/Aug/24Mailing List

https://seclists.org/bugtraq/2019/Sep/18Mailing List

https://security.netapp.com/advisory/ntap-20190823-0005/Third Party Advisory

https://support.f5.com/csp/article/K46011592Third Party Advisory

https://support.f5.com/csp/article/K46011592?utm_source=f5support&amp%...

https://www.debian.org/security/2019/dsa-4520Third Party Advisory

https://www.synology.com/security/advisory/Synology_SA_19_33Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031....Mailing List

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032....Mailing List

http://seclists.org/fulldisclosure/2019/Aug/16Mailing List