CVE-2020-7774 (High) detected in y18n-4.0.0.tgz

[mend-bolt-for-github]

CVE-2020-7774 - High Severity Vulnerability

Vulnerable Library - y18n-4.0.0.tgz

the bare-bones internationalization library used by yargs

Library home page: https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz

Path to dependency file: rollup-mpa/package.json

Path to vulnerable library: rollup-mpa/node_modules/create-pwa/node_modules/y18n/package.json

Dependency Hierarchy:

• create-pwa-2.3.0.tgz (Root Library)
  • yargs-15.3.1.tgz
    • ❌ y18n-4.0.0.tgz (Vulnerable Library)

Found in HEAD commit: 1871b45288c82b8f518a243ce89d78fd5976eb2e

Found in base branch: master

Vulnerability Details

This affects the package y18n before 5.0.5. PoC by po6ix: const y18n = require('y18n')(); y18n.setLocale('proto'); y18n.updateLocale({polluted: true}); console.log(polluted); // true

Publish Date: 2020-11-17

URL: CVE-2020-7774

CVSS 3 Score Details (7.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • 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-2020-7774

Release Date: 2020-11-17

Fix Resolution: 5.0.5

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