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Remote Code Execution (RCE) Affecting pug package, versions <3.0.1

0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 4.07% (93rd percentile)
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NVD
9 critical

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  • Snyk ID SNYK-JS-PUG-1071616
  • published 1 Mar 2021
  • disclosed 10 Feb 2021
  • credit CykuTW
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Introduced: 10 Feb 2021

CVE-2021-21353 Open this link in a new tab
CWE-94 Open this link in a new tab

How to fix?

Upgrade pug to version 3.0.1 or higher.

Overview

pug is an A clean, whitespace-sensitive template language for writing HTML

Affected versions of this package are vulnerable to Remote Code Execution (RCE). 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.