CVE-2021-36773

uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking functionality).
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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Base Score
CVSS 3.x
EPSS Score
Percentile: 49%
VendorProductVersion
scirubynmatrix
𝑥
< 4.4.9
ublockoriginublock_origin
𝑥
< 1.36.2
umatrix_projectumatrix
𝑥
< 1.4.2
debiandebian_linux
9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ublock-origin
bullseye
1.42.0+dfsg-1~deb11u1
fixed
buster
no-dsa
bookworm
1.46.0+dfsg-1
fixed
sid
1.60.0+dfsg-1
fixed
trixie
1.60.0+dfsg-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ublock-origin
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
impish
ignored
hirsute
ignored
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
dne
umatrix
noble
dne
mantic
dne
lunar
ignored
kinetic
ignored
jammy
needs-triage
impish
ignored
hirsute
ignored
focal
needs-triage
bionic
dne
xenial
ignored
trusty
dne