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CVE-2019-20444

Published: Jan 29, 2020Updated: Jul 1, 2025 Sources: CVE List NVD GHSA BDUCWE-444
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
8.7%
Top 5.6%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

Description

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-444

Affected Products

nettynetty
LibraryLibrary
OSS Libraries / generic-library
debian linuxdebian
On-premOS
Operating Systems / linux-distro
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
jboss amq clientsredhat
On-prem
Operating Systems / linux-distro
nettyoss-projectOSS Librariesaka io.netty:netty, netty-incubator-codec-ohttp
debianoss-projectGBOperating Systemsaka debian gnu/linux
fedoraprojectoss-projectUSOperating Systemsaka fedora project
canonicalcommercialGBOperating Systemsaka canonical ltd.
redhatcommercialUSOperating Systemsaka red hat
and 10 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2020:0497
access.redhat.com
https://access.redhat.com/errata/RHSA-2020:0567
access.redhat.com
https://access.redhat.com/errata/RHSA-2020:0601
access.redhat.com
and 127 more references View all →

Timeline

Published
Jan 29, 2020
Last Updated
Jul 1, 2025

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