CVE-2021-23368 (Medium) detected in multiple libraries

[mend-bolt-for-github[bot]]

CVE-2021-23368 - Medium Severity Vulnerability

Vulnerable Libraries - postcss-8.2.6.tgz, postcss-7.0.35.tgz, postcss-7.0.21.tgz

postcss-8.2.6.tgz

Tool for transforming styles with JS plugins

Library home page: https://registry.npmjs.org/postcss/-/postcss-8.2.6.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Dependency Hierarchy: - react-scripts-4.0.3.tgz (Root Library) - postcss-safe-parser-5.0.2.tgz - :x: **postcss-8.2.6.tgz** (Vulnerable Library)

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: /package.json

Dependency Hierarchy: - react-scripts-4.0.3.tgz (Root Library) - css-loader-4.3.0.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: /package.json

Dependency Hierarchy: - react-scripts-4.0.3.tgz (Root Library) - resolve-url-loader-3.1.2.tgz - :x: **postcss-7.0.21.tgz** (Vulnerable Library)

Found in HEAD commit: aab8c5dc1b4755f2444cb2b9ee5468c28e6077fc

Found in base branch: main

Vulnerability Details

The package postcss from 7.0.0 and before 8.2.10 are vulnerable to Regular Expression Denial of Service (ReDoS) during source map parsing.

Publish Date: 2021-04-12

URL: CVE-2021-23368

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: None - Availability Impact: Low

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23368

Release Date: 2021-04-12

Fix Resolution (postcss): 8.2.10

Direct dependency fix Resolution (react-scripts): 5.0.0

Fix Resolution (postcss): 8.2.10

Direct dependency fix Resolution (react-scripts): 5.0.0

Fix Resolution (postcss): 8.2.10

Direct dependency fix Resolution (react-scripts): 5.0.0

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