CVE-2020-27782

A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
redhatCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 53%
VendorProductVersion
redhatjboss_fuse
6.0.0
redhatjboss_fuse
7.0.0
redhatopenshift_application_runtimes
-
redhatundertow
2.0.33:sp2
redhatundertow
2.1.5:sp1
redhatundertow
2.2.3:sp1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
undertow
sid
2.3.8-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
undertow
noble
needs-triage
mantic
dne
lunar
dne
kinetic
ignored
jammy
needs-triage
impish
ignored
hirsute
ignored
groovy
ignored
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
dne