CVE-2021-23368 (Medium) detected in postcss-7.0.32.tgz, postcss-7.0.35.tgz

[mend-bolt-for-github]

CVE-2021-23368 - Medium Severity Vulnerability

Vulnerable Libraries - postcss-7.0.32.tgz, postcss-7.0.35.tgz

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: github-insights/package.json

Path to vulnerable library: github-insights/node_modules/purgecss/node_modules/postcss/package.json

Dependency Hierarchy:

• parcel-bundler-1.12.5.tgz (Root Library)
  • htmlnano-0.2.9.tgz
    • purgecss-2.3.0.tgz
      • ❌ postcss-7.0.32.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: github-insights/package.json

Path to vulnerable library: github-insights/node_modules/postcss/package.json

Dependency Hierarchy:

• parcel-bundler-1.12.5.tgz (Root Library)
  • ❌ postcss-7.0.35.tgz (Vulnerable Library)

Found in HEAD commit: 2c4708fc8b8b0d9e987628d301453c0c3e4ce9ac

Found in base branch: master

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

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