PostgreSQL 9.4.x < 9.4.22, 9.5.x < 9.5.17, 9.6.x < 9.6.13, 10.x < 10.8, 11.x < 11.3 Code Execution Vulnerability - Windows

# SPDX-FileCopyrightText: 2019 Greenbone AG
# 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-only

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

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.108614");
  script_version("2024-07-19T05:05:32+0000");
  script_tag(name:"last_modification", value:"2024-07-19 05:05:32 +0000 (Fri, 19 Jul 2024)");
  script_tag(name:"creation_date", value:"2019-08-01 07:53:57 +0000 (Thu, 01 Aug 2019)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-04-30 08:15:00 +0000 (Fri, 30 Apr 2021)");

  script_cve_id("CVE-2019-10127", "CVE-2019-10128");

  script_tag(name:"qod_type", value:"remote_banner_unreliable"); # Only PostgreSQL installed via the BigSQL and EnterpriseDB Windows installer are affected

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

  script_name("PostgreSQL 9.4.x < 9.4.22, 9.5.x < 9.5.17, 9.6.x < 9.6.13, 10.x < 10.8, 11.x < 11.3 Code Execution Vulnerability - Windows");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Databases");
  script_dependencies("gb_postgresql_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("postgresql/detected", "Host/runs_windows");

  script_tag(name:"summary", value:"PostgreSQL is prone to an arbitrary code execution vulnerability due to
  BigSQL and EnterpriseDB Windows installer not clearing permissive ACL entries.");

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

  script_tag(name:"insight", value:"Due to both the EnterpriseDB and BigSQL Windows installers not locking down
  the permissions of the PostgreSQL binary installation directory and the data directory, an unprivileged Windows
  user account and an unprivileged PostgreSQL account could cause the PostgreSQL service account to execute arbitrary code.

  This vulnerability is present in all supported versions of PostgreSQL for these installers, and possibly exists
  in older versions. Both sets of installers have fixed the permissions for these directories for both new and existing
  installations. If you have installed PostgreSQL on Windows using other methods, we advise that you check that your
  PostgreSQL binary directories are writable only to trusted users and that your data directories are only accessible
  to trusted users.");

  script_tag(name:"affected", value:"PostgreSQL versions 9.4.x, 9.5.x, 9.6.x, 10.x and 11.x installed on Windows via
  BigSQL or EnterpriseDB installer.");

  script_tag(name:"solution", value:"Update to version 9.4.22, 9.5.17, 9.6.13, 10.8, 11.3 or later.");

  script_xref(name:"URL", value:"https://www.postgresql.org/about/news/1939/");

  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_in_range(version: version, test_version: "9.4", test_version2: "9.4.21")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.4.22", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "9.5", test_version2: "9.5.16")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.5.17", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "9.6", test_version2: "9.6.12")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "9.6.13", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "10.0", test_version2: "10.7")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.8", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "11.0", test_version2: "11.2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "11.3", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);