PostgreSQL 10.x < 10.22, 11.x < 11.17, 12.x < 12.12, 13.x < 13.8, 14.x < 14.5 Extension Vulnerability - Linux

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.0.148596");
  script_version("2024-02-15T05:05:40+0000");
  script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
  script_tag(name:"creation_date", value:"2022-08-16 02:18:07 +0000 (Tue, 16 Aug 2022)");
  script_tag(name:"cvss_base", value:"9.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-08-19 19:09:00 +0000 (Fri, 19 Aug 2022)");

  script_cve_id("CVE-2022-2625");

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

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

  script_name("PostgreSQL 10.x < 10.22, 11.x < 11.17, 12.x < 12.12, 13.x < 13.8, 14.x < 14.5 Extension Vulnerability - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone AG");
  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 a vulnerability where extension scripts
  replace objects not belonging to the extension.");

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

  script_tag(name:"insight", value:"Some extensions use CREATE OR REPLACE or CREATE IF NOT EXISTS
  commands. Some don't adhere to the documented rule to target only objects known to be extension
  members already. An attack requires permission to create non-temporary objects in at least one
  schema, ability to lure or wait for an administrator to create or update an affected extension in
  that schema, and ability to lure or wait for a victim to use the object targeted in CREATE OR
  REPLACE or CREATE IF NOT EXISTS.");

  script_tag(name:"impact", value:"Given all three prerequisites, the attacker can run arbitrary
  code as the victim role, which may be a superuser. Known-affected extensions include both
  PostgreSQL-bundled and non-bundled extensions. PostgreSQL is blocking this attack in the core
  server, so there's no need to modify individual extensions.");

  script_tag(name:"affected", value:"PostgreSQL version 10.x, 11.x, 12.x, 13.x and 14.x.");

  script_tag(name:"solution", value:"Update to version 10.22, 11.17, 12.12, 13.8, 14.5 or later.");

  script_xref(name:"URL", value:"https://www.postgresql.org/support/security/CVE-2022-2625/");
  script_xref(name:"URL", value:"https://www.postgresql.org/about/news/postgresql-145-138-1212-1117-1022-and-15-beta-3-released-2496/");

  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_exclusive(version: version, test_version_lo: "10.0", test_version_up: "10.22")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.22", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "11.0", test_version_up: "11.17")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "11.17", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "12.0", test_version_up: "12.12")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "12.12", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "13.0", test_version_up: "13.8")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "13.8", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range_exclusive(version: version, test_version_lo: "14.0", test_version_up: "14.5")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "14.5", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);