CVE-2023-44270

NameCVE-2023-44270
DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4003-1
Debian Bugs1053282

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
node-postcss (PTS)bullseye8.2.1+~cs5.3.23-8vulnerable
bullseye (security)8.2.1+~cs5.3.23-8+deb11u1fixed
bookworm8.4.20+~cs8.0.23-1vulnerable
sid, trixie8.4.49+~cs9.2.32-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
node-postcsssourcebullseye8.2.1+~cs5.3.23-8+deb11u1DLA-4003-1
node-postcsssource(unstable)8.4.31+~cs8.0.26-11053282

Notes

[bookworm] - node-postcss <no-dsa> (Minor issue)
[buster] - node-postcss <postponed> (Minor issue)
https://github.com/postcss/postcss/commit/58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5 (8.4.31)
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