CVE-2021-4235

Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
GoCNA
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CVEADP
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CISA-ADPADP
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
VendorProductVersion
yaml_projectyaml
𝑥
< 2.2.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
golang-yaml.v2
bullseye
2.4.0-1
fixed
sid
2.4.0-4
fixed
trixie
2.4.0-4
fixed
bookworm
2.4.0-4
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
golang-github-coreos-discovery-etcd-io
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
focal
needs-triage
bionic
dne
xenial
ignored
trusty
ignored
golang-gopkg-yaml.v3
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
ignored
jammy
not-affected
focal
dne
bionic
dne
xenial
ignored
trusty
ignored
golang-yaml.v2
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
ignored
jammy
not-affected
focal
Fixed 2.2.2-1ubuntu0.1
released
bionic
Fixed 0.0+git20170407.0.cd8b52f-1ubuntu2+esm1
released
xenial
Fixed 0.0+git20160301.0.a83829b-1ubuntu0.1~esm1
released
trusty
ignored
kubernetes
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
focal
needs-triage
bionic
dne
xenial
ignored
trusty
ignored
singularity-container
noble
needs-triage
kinetic
dne
jammy
dne
focal
dne
bionic
needs-triage
xenial
ignored
trusty
ignored
webhook
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
focal
needs-triage
bionic
needs-triage
xenial
ignored
trusty
ignored