CVE-2021-23382 (High) detected in postcss-7.0.35.tgz, postcss-7.0.21.tgz

[mend-for-github-com[bot]]

CVE-2021-23382 - High Severity Vulnerability

Vulnerable Libraries - postcss-7.0.35.tgz, postcss-7.0.21.tgz

postcss-7.0.35.tgz

Tool for transforming styles with JS plugins

Library home page: https://registry.npmjs.org/postcss/-/postcss-7.0.35.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/postcss/package.json

Dependency Hierarchy: - react-scripts-3.4.3.tgz (Root Library) - postcss-safe-parser-4.0.1.tgz - :x: **postcss-7.0.35.tgz** (Vulnerable Library)

postcss-7.0.21.tgz

Tool for transforming styles with JS plugins

Library home page: https://registry.npmjs.org/postcss/-/postcss-7.0.21.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/resolve-url-loader/node_modules/postcss/package.json

Dependency Hierarchy: - react-scripts-3.4.3.tgz (Root Library) - resolve-url-loader-3.1.1.tgz - :x: **postcss-7.0.21.tgz** (Vulnerable Library)

Found in HEAD commit: 28669a49080d16cfb62291c1a10d55b431d61474

Found in base branch: main

Vulnerability Details

The package postcss before 8.2.13 are vulnerable to Regular Expression Denial of Service (ReDoS) via getAnnotationURL() and loadAnnotation() in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern \/\*\s* sourceMappingURL=(.*).

Publish Date: 2021-04-26

URL: CVE-2021-23382

CVSS 3 Score Details (7.5)

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: None - Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23382

Release Date: 2021-04-26

Fix Resolution (postcss): 7.0.36

Direct dependency fix Resolution (react-scripts): 3.4.4

Fix Resolution (postcss): 7.0.36

Direct dependency fix Resolution (react-scripts): 3.4.4

---

• [ ] Check this box to open an automated fix PR