CVE-2020-7774 (High) detected in y18n-3.2.1.tgz

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

CVE-2020-7774 - High Severity Vulnerability

Vulnerable Library - y18n-3.2.1.tgz

the bare-bones internationalization library used by yargs

Library home page: https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz

Dependency Hierarchy: - snyk-1.192.5.tgz (Root Library) - snyk-config-2.2.1.tgz - nconf-0.10.0.tgz - yargs-3.32.0.tgz - :x: **y18n-3.2.1.tgz** (Vulnerable Library)

Found in HEAD commit: 91935c9712dc7108a8e93a1a03524ff430afe66b

Vulnerability Details

This affects the package y18n before 3.2.2, 4.0.1 and 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://www.npmjs.com/advisories/1654

Release Date: 2020-11-17

Fix Resolution: 3.2.2, 4.0.1, 5.0.5

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