CVE-2019-9516

MEDIUMMonitor

Published:Aug 13, 2019(6 years ago)

Modified:Jan 14, 2025

Remote ExploitNo InteractionLow Complexity

Vulnerability Description

Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.

Attack Characteristics

Network AccessLow ComplexityLow PrivilegesNo User Interaction

🤖

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://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035....Mailing List

CVSS Score

v3.1

6.5/ 10.0

MEDIUM

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

At a Glance

Affected Products

References

apple / swiftnio

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00014....Mailing List

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

https://access.redhat.com/errata/RHSA-2019:2745Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:2746Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:2775Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:2799Third Party Advisory

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-2019:2946Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:2950Third Party Advisory

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

https://access.redhat.com/errata/RHSA-2019:2966Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:3932Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:3933Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:3935Third 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.fedoraproject.org/archives/list/package-announce%40lists...

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

https://seclists.org/bugtraq/2019/Aug/40Mailing List

https://security.netapp.com/advisory/ntap-20190823-0002/Third Party Advisory

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

https://support.f5.com/csp/article/K02591030Third Party Advisory

https://support.f5.com/csp/article/K02591030?utm_source=f5support&amp%...

https://usn.ubuntu.com/4099-1/Third Party Advisory

https://www.debian.org/security/2019/dsa-4505Third 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://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035....Mailing List