Docker < 1.11.2 Privilege Escalation Vulnerability

# Copyright (C) 2021 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.
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# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
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CPE = "cpe:/a:docker:docker";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.112992");
  script_version("2021-09-09T07:55:52+0000");
  script_tag(name:"last_modification", value:"2021-09-09 07:55:52 +0000 (Thu, 09 Sep 2021)");
  script_tag(name:"creation_date", value:"2021-09-08 08:04:11 +0000 (Wed, 08 Sep 2021)");
  script_tag(name:"cvss_base", value:"2.1");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-01-05 17:38:00 +0000 (Tue, 05 Jan 2021)");

  script_cve_id("CVE-2016-3697");

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

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

  script_name("Docker < 1.11.2 Privilege Escalation Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Privilege escalation");
  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 privilege escalation vulnerability.");

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

  script_tag(name:"insight", value:"libcontainer/user/user.go in runC, as used in Docker,
  improperly treats a numeric UID as a potential username, which allows local users to gain
  privileges via a numeric username in the password file in a container.");

  script_tag(name:"affected", value:"Docker through version 1.11.1.");

  script_tag(name:"solution", value:"Update to version 1.11.2 or later.");

  script_xref(name:"URL", value:"https://github.com/moby/moby/issues/21436");

  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: "1.11.2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.11.2");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);