MikroTik RouterOS Directory Traversal Vulnerability (CVE-2019-3943)

2019-04-10T00:00:00
ID OPENVAS:1361412562310142239
Type openvas
Reporter This script is Copyright (C) 2019 Greenbone Networks GmbH
Modified 2019-04-11T00:00:00

Description

MikroTik RouterOS is vulnerable to an authenticated directory traversal vulnerability.

                                        
                                            # Copyright (C) 2019 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of the respective author(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:/o:mikrotik:routeros";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.142239");
  script_version("2019-04-11T13:56:06+0000");
  script_tag(name:"last_modification", value:"2019-04-11 13:56:06 +0000 (Thu, 11 Apr 2019)");
  script_tag(name:"creation_date", value:"2019-04-10 14:07:57 +0000 (Wed, 10 Apr 2019)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:P/A:N");

  script_cve_id("CVE-2019-3943");

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

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

  script_name("MikroTik RouterOS Directory Traversal Vulnerability (CVE-2019-3943)");

  script_category(ACT_GATHER_INFO);

  script_copyright("This script is Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_mikrotik_router_routeros_consolidation.nasl");
  script_mandatory_keys("mikrotik/detected");

  script_tag(name:"summary", value:"MikroTik RouterOS is vulnerable to an authenticated directory traversal
  vulnerability.");

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

  script_tag(name:"insight", value:"The directory traversal allows an authenticated attacker to access files
  outside of the sandbox path with mkdir, read and write access.");

  script_tag(name:"impact", value:"An authenticated attacker may have read access to the entire filesystem and
  write access to all locations that aren't marked as read-only.");

  script_tag(name:"affected", value:"MikroTik RouterOS version 6.42.12 and prior (Long-term release) and 6.43.12
  and prior (Stable release).");

  script_tag(name:"solution", value:"Update to version 6.43.13 (Long-term release), 6.44 (Stable release) or later.");

  script_xref(name:"URL", value:"https://mikrotik.com/download/changelogs/bugfix-release-tree");
  script_xref(name:"URL", value:"https://mikrotik.com/download/changelogs/release-candidate-release-tree");
  script_xref(name:"URL", value:"https://www.tenable.com/security/research/tra-2019-16");

  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_equal(version: version, test_version: "6.42.12")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.43.13");
  security_message(port: 0, data: report);
  exit(0);
}
else if (version_in_range(version: version, test_version: "6.43", test_version2: "6.43.12")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "6.44");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);