CVE-2022-40188

Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets.
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
mitreCNA
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CVEADP
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CISA-ADPADP
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 52%
VendorProductVersion
nicknot_resolver
𝑥
< 5.5.3
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
knot-resolver
bullseye
no-dsa
bookworm
5.6.0-1+deb12u1
fixed
bookworm (security)
5.6.0-1+deb12u1
fixed
sid
5.7.4-2
fixed
trixie
5.7.4-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
knot-resolver
lunar
not-affected
kinetic
Fixed 5.5.1-5ubuntu0.22.10.1
released
jammy
Fixed 5.4.4-1ubuntu0.1~esm1
released
focal
Fixed 3.2.1-3ubuntu2.1
released
bionic
Fixed 2.1.1-1ubuntu0.1~esm2
released
xenial
Fixed 1.0.0~beta3-1ubuntu0.1~esm1
released
trusty
ignored