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Rex-1.16.1
⭐ Starred 717 / Rex::Box::Docker
Security Advisories (1)
CVE-2026-94140 (2026-10-21)

Rex versions through 1.16.1 for Perl accept an unknown SSH host key for remote rsync transfers because sync hardcodes StrictHostKeyChecking=no. Every remote branch of sync builds its ssh command with that option, for password authentication, for private-key authentication and for the fallback. The ssh options a caller sets through set_openssh_opt reach the OpenSSH transport but not this command, so there is no configuration that restores host key checking for the transfer. An attacker who can redirect the connection before the real host key is known presents their own and the transfer proceeds: under password authentication sync sends the connection password to that server, an upload writes the selected local files to it, and a download writes what it returns to the local destination.

NAME

Rex::Box::Docker - Rex/Boxes Docker Module

DESCRIPTION

This is a Rex/Boxes module to use Docker Images. You need to have dockerd installed.

EXAMPLES

To use this module inside your Rexfile you can use the following commands.

use Rex::Commands::Box;
set box => "Docker";

task "prepare_box", sub {
   box {
      my ($box) = @_;

      $box->name("mybox");
      $box->url("http://box.rexify.org/box/ubuntu-server-12.10-amd64.tar.gz");
      $box->url("debian:latest");

      $box->network(1 => {
         name => "default",
      });

      $box->auth(
         user => "root",
         password => "box",
      );

      $box->setup("setup_task");
   };
};

If you want to use a YAML file you can use the following template.

type: Docker
vms:
   vmone:
      url: debian:latest
      setup: setup_task

And then you can use it the following way in your Rexfile.

use Rex::Commands::Box init_file => "file.yml";

task "prepare_vms", sub {
   boxes "init";
};

METHODS

See also the Methods of Rex::Box::Base. This module inherits all methods of it.

new(name => $vmname)

Constructor if used in OO mode.

my $box = Rex::Box::Docker->new(name => "vmname");

memory($memory_size)

Sets the memory of a VM in megabyte.

info

Returns a hashRef of vm information.

ip

This method return the ip of a vm on which the ssh daemon is listening.