CVE-2021-23382 (High) detected in multiple libraries

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

CVE-2021-23382 - High Severity Vulnerability

Vulnerable Libraries - postcss-6.0.23.tgz, postcss-7.0.18.tgz, postcss-7.0.17.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: /wp-content/themes/twentynineteen/package.json

Path to vulnerable library: /wp-content/themes/twentytwenty/node_modules/postcss/package.json,/wp-content/themes/twentytwenty/node_modules/postcss/package.json

Dependency Hierarchy: - rtlcss-2.4.0.tgz (Root Library) - :x: **postcss-6.0.23.tgz** (Vulnerable Library)

postcss-7.0.18.tgz

Tool for transforming styles with JS plugins

Library home page: https://registry.npmjs.org/postcss/-/postcss-7.0.18.tgz

Path to dependency file: /wp-content/themes/twentytwenty/package.json

Path to vulnerable library: /wp-content/themes/twentytwenty/node_modules/postcss-cli/node_modules/postcss/package.json

Dependency Hierarchy: - postcss-cli-6.1.3.tgz (Root Library) - :x: **postcss-7.0.18.tgz** (Vulnerable Library)

postcss-7.0.17.tgz

Tool for transforming styles with JS plugins

Library home page: https://registry.npmjs.org/postcss/-/postcss-7.0.17.tgz

Path to dependency file: /wp-content/themes/twentynineteen/package.json

Path to vulnerable library: /wp-content/themes/twentynineteen/node_modules/postcss/package.json

Dependency Hierarchy: - autoprefixer-9.6.0.tgz (Root Library) - :x: **postcss-7.0.17.tgz** (Vulnerable Library)

Found in HEAD commit: 6464f631e15c1e1c888b6d505d934cf06ab4d0a2

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 (rtlcss): 3.0.0

Fix Resolution (postcss): 7.0.36

Direct dependency fix Resolution (postcss-cli): 7.0.0

Fix Resolution (postcss): 7.0.36

Direct dependency fix Resolution (autoprefixer): 9.6.1

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