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.
CVE-2023-44270 - Medium Severity Vulnerability
Vulnerable Libraries - postcss-6.0.23.tgz, postcss-7.0.38.tgz, postcss-5.2.18.tgz, postcss-7.0.32.tgz
postcss-6.0.23.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-6.0.23.tgz
Path to dependency file: /portainer-develop/portainer-develop/package.json
Path to vulnerable library: /portainer-develop/portainer-develop/node_modules/postcss/package.json
Dependency Hierarchy: - autoprefixer-7.2.6.tgz (Root Library) - :x: **postcss-6.0.23.tgz** (Vulnerable Library)
postcss-7.0.38.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-7.0.38.tgz
Path to dependency file: /portainer-develop/portainer-develop/package.json
Path to vulnerable library: /portainer-develop/portainer-develop/node_modules/postcss/package.json
Dependency Hierarchy: - :x: **postcss-7.0.38.tgz** (Vulnerable Library)
postcss-5.2.18.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-5.2.18.tgz
Path to dependency file: /portainer-develop/portainer-develop/package.json
Path to vulnerable library: /portainer-develop/portainer-develop/node_modules/postcss/package.json
Dependency Hierarchy: - grunt-postcss-0.8.0.tgz (Root Library) - :x: **postcss-5.2.18.tgz** (Vulnerable Library)
postcss-7.0.32.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-7.0.32.tgz
Path to dependency file: /portainer-develop/portainer-develop/package.json
Path to vulnerable library: /portainer-develop/portainer-develop/node_modules/postcss/package.json
Dependency Hierarchy: - cssnano-4.1.11.tgz (Root Library) - :x: **postcss-7.0.32.tgz** (Vulnerable Library)
Found in HEAD commit: ec9d972edb7fb1ea028782bd0f770272d89e0c60
Found in base branch: main
Vulnerability Details
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.
Publish Date: 2023-09-29
URL: CVE-2023-44270
CVSS 3 Score Details (5.3)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://github.com/advisories/GHSA-7fh5-64p2-3v2j
Release Date: 2023-09-29
Fix Resolution (postcss): 8.4.31
Direct dependency fix Resolution (autoprefixer): 10.0.0
Fix Resolution (postcss): 8.4.31
Direct dependency fix Resolution (cssnano): 5.0.0
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