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CVE-2019-9511

Published: Aug 13, 2019Updated: Jan 14, 2025 Sources: CVE List NVD BDUCWE-400
NVD MITRE
7.5CVSSHIGH
EPSS Score
59.5%
Top 1.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
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

UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
Enterprise Manager Ops CenterOracle Corp.
On-premWeb App
Enterprise Software / itsm-monitoring
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Module for Open Buildservice Development ToolsNovell Inc.
On-prem
Operating Systems / linux-distro
OpenSUSE LeapNovell Inc.
On-premOS
Operating Systems / linux-distro
canonical ltd.commercialGBOperating Systemsaka canonical
oracle corp.commercialUSDatabasesaka oracle
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
novell inc.commercialUSOperating Systems
and 30 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

https://nvd.nist.gov/vuln/detail/CVE-2019-9511
nvd.nist.gov
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2019-9511
httpd.apache.org
https://www.oracle.com/technetwork/topics/security/public-vuln-to-advisory-mapping-093627.html
oracle.com
and 55 more references View all →

Timeline

Published
Aug 13, 2019
Last Updated
Jan 14, 2025

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