Command Injection Affecting cookiecutter package, versions [,2.1.1)


0.0
high
  • Exploit Maturity

    Proof of concept

  • Attack Complexity

    High

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-PYTHON-COOKIECUTTER-2414281

  • published

    2 Jun 2022

  • disclosed

    2 Mar 2022

  • credit

    Alessio Della Libera of Snyk Research Team

How to fix?

Upgrade cookiecutter to version 2.1.1 or higher.

Overview

cookiecutter is a command-line utility that creates projects from cookiecutters.

Affected versions of this package are vulnerable to Command Injection via hg argument injection. When calling the cookiecutter function from Python code with the checkout parameter, it is passed to the hg checkout command in a way that additional flags can be set. The additional flags can be used to perform a command injection.

PoC

from cookiecutter.main import cookiecutter

checkout = "--config=alias.checkout=!touch ./HELLO"
cookiecutter('some valid hg repository', checkout=checkout)