CVE-2021-23382 (High) detected in postcss-5.2.18.tgz, postcss-6.0.23.tgz

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CVE-2021-23382 - High Severity Vulnerability

Vulnerable Libraries - postcss-5.2.18.tgz, postcss-6.0.23.tgz

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: /client/package.json

Path to vulnerable library: /client/node_modules/postcss-merge-rules/node_modules/postcss/package.json

Dependency Hierarchy: - css-loader-0.28.11.tgz (Root Library) - :x: **postcss-5.2.18.tgz** (Vulnerable Library)

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: /client/package.json

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

Dependency Hierarchy: - autoprefixer-7.2.6.tgz (Root Library) - :x: **postcss-6.0.23.tgz** (Vulnerable Library)

Found in HEAD commit: 2afe18be24d4f77034e10f011e2885a5f1f53cb9

Found in base branch: master

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 (css-loader): 2.0.0

Fix Resolution (postcss): 7.0.36

Direct dependency fix Resolution (autoprefixer): 9.0.0

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:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.