CVE-2021-21353 (Medium) detected in pug-2.0.4.tgz

[mend-bolt-for-github]

CVE-2021-21353 - Medium Severity Vulnerability

Vulnerable Library - pug-2.0.4.tgz

A clean, whitespace-sensitive template language for writing HTML

Library home page: https://registry.npmjs.org/pug/-/pug-2.0.4.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/pug/package.json

Dependency Hierarchy:

• ❌ pug-2.0.4.tgz (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Pug is an npm package which is a high-performance template engine. In pug before version 3.0.1, if a remote attacker was able to control the pretty option of the pug compiler, e.g. if you spread a user provided object such as the query parameters of a request into the pug template inputs, it was possible for them to achieve remote code execution on the node.js backend. This is fixed in version 3.0.1. This advisory applies to multiple pug packages including "pug", "pug-code-gen". pug-code-gen has a backported fix at version 2.0.3. This advisory is not exploitable if there is no way for un-trusted input to be passed to pug as the pretty option, e.g. if you compile templates in advance before applying user input to them, you do not need to upgrade.

Publish Date: 2021-03-03

URL: CVE-2021-21353

CVSS 3 Score Details (6.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-p493-635q-r6gr

Release Date: 2021-03-03

Fix Resolution: 3.0.0-canary-1

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