MariaDB 10.4.7 - 10.4.11 Privilege Escalation Vulnerability (Linux)

# Copyright (C) 2020 Greenbone Networks GmbH
#
# 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:mariadb:mariadb";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.143480");
  script_version("2020-02-06T06:26:20+0000");
  script_tag(name:"last_modification", value:"2020-02-06 06:26:20 +0000 (Thu, 06 Feb 2020)");
  script_tag(name:"creation_date", value:"2020-02-06 06:09:44 +0000 (Thu, 06 Feb 2020)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:S/C:C/I:C/A:C");

  script_cve_id("CVE-2020-7221");

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

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

  script_name("MariaDB 10.4.7 - 10.4.11 Privilege Escalation Vulnerability (Linux)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Databases");
  script_dependencies("mysql_version.nasl", "os_detection.nasl");
  script_mandatory_keys("MariaDB/installed", "Host/runs_unixoide");

  script_tag(name:"summary", value:"MariaDB is prone to a privilege escalation vulnerability.");

  script_tag(name:"insight", value:"mysql_install_db in MariaDB allows privilege escalation from the mysql user
  account to root because chown and chmod are performed unsafely, as demonstrated by a symlink attack on a chmod
  04755 of auth_pam_tool_dir/auth_pam_tool.");

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

  script_tag(name:"affected", value:"MariaDB versions 10.4.7 - 10.4.11.");

  script_tag(name:"solution", value:"Update to version 10.4.12 or later.");

  script_xref(name:"URL", value:"https://seclists.org/oss-sec/2020/q1/55");

  exit(0);
}

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

if (!port = get_app_port(cpe: CPE))
  exit(0);

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

if (version_in_range(version: version, test_version: "10.4.7", test_version2: "10.4.11")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.4.12");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);