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CVE-2020-11080

Denial of service in nghttp2

Published: Jun 3, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-707
3.7LOW
NVD MITRE
EPSS Score
5.3%
Top 8.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-707CWE-400

Affected Products

Oracle Corp.
commercial·USaka oracle
Oracle Enterprise Session Border ControllerOn-premNetwork Device
Networking Infrastructure
GraalVM Enterprise EditionOn-premLibrary
OSS Libraries / generic-library
MySQL ClusterOn-premDatabase
Databases / relational
Enterprise Communications BrokerOn-premWeb App
Communications / messaging-chat
banking extensibility workbenchOn-premDesktop App
Enterprise Software / erp
blockchain platformOn-premWeb App
Databases / data-warehouse-analytics
graalvmOn-premLibrary
OSS Libraries / generic-library
mysqlOn-premDatabase
Databases / relational
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
nghttp2On-premLibrary
OSS Libraries / generic-library
Novell Inc.
commercial·US
OpenSUSE LeapOn-premOS
Operating Systems / linux-distro
Fedora Project
oss-project·USaka fedora
FedoraOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
АО «ИВК»
commercial·RUaka ivk
Альт 8 СПOn-premOS
Operating Systems / linux-distro
and 7 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090
github.com
https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394
github.com
https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr
github.com
and 34 more references View all →
News mentions
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