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CVE-2019-9516

Published: Aug 13, 2019Updated: Jan 14, 2025 Sources: CVE List NVD BDUCWE-400
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
57.5%
Top 1.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-400CWE-770

Affected Products

swiftnioappleOperating Systems
traffic serverapache
On-premWeb App
Web & CMS Plugins
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
applecommercialUSMobile Appsaka apple inc., apple computer
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
canonicalcommercialGBOperating Systemsaka canonical ltd.
debianoss-projectGBOperating Systemsaka debian gnu/linux
fedoraprojectoss-projectUSOperating Systemsaka fedora project
and 24 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html
lists.opensuse.org
and 48 more references View all →

Timeline

Published
Aug 13, 2019
Last Updated
Jan 14, 2025

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