Docker < 18.09.4 RCE Vulnerability

# Copyright (C) 2019 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

CPE = "cpe:/a:docker:docker";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.142793");
  script_version("2021-08-30T11:01:18+0000");
  script_tag(name:"last_modification", value:"2021-08-30 11:01:18 +0000 (Mon, 30 Aug 2021)");
  script_tag(name:"creation_date", value:"2019-08-27 02:13:49 +0000 (Tue, 27 Aug 2019)");
  script_tag(name:"cvss_base", value:"4.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-24 17:37:00 +0000 (Mon, 24 Aug 2020)");

  script_cve_id("CVE-2019-13139");

  script_tag(name:"qod_type", value:"remote_banner_unreliable");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Docker < 18.09.4 RCE Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_docker_http_rest_api_detect.nasl", "gb_docker_ssh_login_detect.nasl");
  script_mandatory_keys("docker/version");

  script_tag(name:"summary", value:"Docker is prone to a remote code execution (RCE) vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"An attacker who is capable of supplying or manipulating the
  build path for the 'docker build' command would be able to gain command execution. An issue exists
  in the way 'docker build' processes remote git URLs, and results in command injection into the
  underlying 'git clone' command, leading to code execution in the context of the user executing the
  'docker build' command. This occurs because git ref can be misinterpreted as a flag.");

  script_tag(name:"affected", value:"Docker prior to version 18.09.4.");

  script_tag(name:"solution", value:"Update to version 18.09.4 or later.");

  script_xref(name:"URL", value:"https://docs.docker.com/engine/release-notes/#18094");
  script_xref(name:"URL", value:"https://github.com/moby/moby/pull/38944");
  script_xref(name:"URL", value:"https://staaldraad.github.io/post/2019-07-16-cve-2019-13139-docker-build/");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!version = get_app_version(cpe: CPE, nofork: TRUE))
  exit(0);

if (version_is_less(version: version, test_version: "18.09.4")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "18.09.4");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);