CVE-2020-28500 (Medium) detected in lodash-4.17.20.tgz

[mend-bolt-for-github]

CVE-2020-28500 - Medium Severity Vulnerability

Vulnerable Library - lodash-4.17.20.tgz

Lodash modular utilities.

Library home page: https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz

Path to dependency file: github-action-branch-mapper/package.json

Path to vulnerable library: github-action-branch-mapper/node_modules/lodash/package.json

Dependency Hierarchy:

• eslint-7.20.0.tgz (Root Library)
  • ❌ lodash-4.17.20.tgz (Vulnerable Library)

Found in HEAD commit: dfdeaafbf366db7294f90cc00445cd724858b07e

Vulnerability Details

All versions of package lodash; all versions of package org.fujion.webjars:lodash are vulnerable to Regular Expression Denial of Service (ReDoS) via the toNumber, trim and trimEnd functions. Steps to reproduce (provided by reporter Liyuan Chen): var lo = require('lodash'); function build_blank (n) { var ret = "1" for (var i = 0; i < n; i++) { ret += " " } return ret + "1"; } var s = build_blank(50000) var time0 = Date.now(); lo.trim(s) var time_cost0 = Date.now() - time0; console.log("time_cost0: " + time_cost0) var time1 = Date.now(); lo.toNumber(s) var time_cost1 = Date.now() - time1; console.log("time_cost1: " + time_cost1) var time2 = Date.now(); lo.trimEnd(s) var time_cost2 = Date.now() - time2; console.log("time_cost2: " + time_cost2)

Publish Date: 2021-02-15

URL: CVE-2020-28500

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.

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