CVE-2023-44270

EUVD-2023-2456
An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.
Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 38%
Affected Products (NVD)
VendorProductVersion
postcsspostcss
𝑥
< 8.4.31
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
node-postcss
bookworm
no-dsa
bullseye
vulnerable
bullseye (security)
8.2.1+~cs5.3.23-8+deb11u1
fixed
buster
postponed
sid
8.4.49+~cs9.2.32-1
fixed
trixie
8.4.49+~cs9.2.32-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
node-postcss
bionic
ignored
focal
needs-triage
jammy
needs-triage
lunar
ignored
mantic
ignored
noble
needs-triage
oracular
needs-triage
trusty
ignored
xenial
ignored
Common Weakness Enumeration
References
https://github.com/github/advisory-database/issues/2820
https://github.com/postcss/postcss/blob/main/lib/tokenize.js#L25
https://github.com/postcss/postcss/commit/58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5
https://github.com/postcss/postcss/releases/tag/8.4.31
https://github.com/github/advisory-database/issues/2820
https://github.com/postcss/postcss/blob/main/lib/tokenize.js#L25
https://github.com/postcss/postcss/commit/58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5
https://github.com/postcss/postcss/releases/tag/8.4.31
https://lists.debian.org/debian-lts-announce/2024/12/msg00025.html