PostgreSQL < 9.4.26, 9.5.x < 9.5.21, 9.6.x < 9.6.17, 10.x < 10.12, 11.x < 11.7, 12.x < 12.2 Authorization Check Vulnerability (Linux)

2020-03-19T00:00:00
ID OPENVAS:1361412562310143610
Type openvas
Reporter Copyright (C) 2020 Greenbone Networks GmbH
Modified 2020-03-31T00:00:00

Description

PostgreSQL is prone to an authorization check vulnerability.

                                        
                                            # Copyright (C) 2020 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:/a:postgresql:postgresql";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.143610");
  script_version("2020-03-31T06:24:37+0000");
  script_tag(name:"last_modification", value:"2020-03-31 06:24:37 +0000 (Tue, 31 Mar 2020)");
  script_tag(name:"creation_date", value:"2020-03-19 03:40:26 +0000 (Thu, 19 Mar 2020)");
  script_tag(name:"cvss_base", value:"3.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:N/I:P/A:N");

  script_cve_id("CVE-2020-1720");

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

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

  script_name("PostgreSQL < 9.4.26, 9.5.x < 9.5.21, 9.6.x < 9.6.17, 10.x < 10.12, 11.x < 11.7, 12.x < 12.2 Authorization Check Vulnerability (Linux)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Databases");
  script_dependencies("postgresql_detect.nasl", "secpod_postgresql_detect_lin.nasl", "os_detection.nasl");
  script_mandatory_keys("postgresql/detected", "Host/runs_unixoide");

  script_tag(name:"summary", value:"PostgreSQL is prone to an authorization check vulnerability.");

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

  script_tag(name:"impact", value:"The ALTER ... DEPENDS ON EXTENSION sub-commands do not perform authorization
  checks, which can allow an unprivileged user to drop any function, procedure, materialized view, index, or
  trigger under certain conditions. This attack is possible if an administrator has installed an extension and an
  unprivileged user can CREATE, or an extension owner either executes DROP EXTENSION predictably or can be
  convinced to execute DROP EXTENSION.");

  script_tag(name:"affected", value:"PostgreSQL versions prior to 9.4.26, 9.5.x prior to 9.5.21, 9.6.x prior to
  9.6.17, 10.x prior to 10.12, 11.x prior to 11.7 and 12.x prior to 12.2.");

  script_tag(name:"solution", value:"Update to version 9.4.26, 9.5.21, 9.6.17, 10.12, 11.7, 12.2 or later.");

  script_xref(name:"URL", value:"https://www.postgresql.org/about/news/2011/");

  exit(0);
}

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

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

if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE))
  exit(0);

version = infos["version"];
location = infos["location"];

if (version_is_less(version: version, test_version: "9.4.26")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.4.26", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "9.5.0", test_version2: "9.5.20")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.5.21", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "9.6.0", test_version2: "9.6.16")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.6.17", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "10.0", test_version2: "10.11")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.12", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "11.0", test_version2: "11.6")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "11.7", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "12.0", test_version2: "12.1")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "12.2", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);