Pi-hole Core < 5.18 Authenticated Arbitrary File Read Vulnerability

# SPDX-FileCopyrightText: 2024 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:pi-hole:pi-hole";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.114467");
  script_version("2024-03-29T05:05:27+0000");
  script_tag(name:"last_modification", value:"2024-03-29 05:05:27 +0000 (Fri, 29 Mar 2024)");
  script_tag(name:"creation_date", value:"2024-03-28 15:09:50 +0000 (Thu, 28 Mar 2024)");
  script_tag(name:"cvss_base", value:"8.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:P/A:P");

  script_cve_id("CVE-2024-28247");

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

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

  script_name("Pi-hole Core < 5.18 Authenticated Arbitrary File Read Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2024 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_pi-hole_http_detect.nasl");
  script_mandatory_keys("pi-hole/detected");

  script_tag(name:"summary", value:"Pi-hole Core is prone to an authenticated arbitrary file read
  vulnerability.");

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

  script_tag(name:"insight", value:"The flaw allows an authenticated user on the platform to read
  internal server files arbitrarily, and because the application runs from behind, reading files is
  done as a privileged user.");

  script_tag(name:"affected", value:"Pi-hole Core versions 5.17.3 and prior.");

  script_tag(name:"solution", value:"Update to version 5.18 or later.");

  script_xref(name:"URL", value:"https://pi-hole.net/blog/2024/03/27/pi-hole-core-v5-18-released-to-fix-an-authenticated-arbitrary-file-read-with-root-privileges-vulnerability/");
  script_xref(name:"URL", value:"https://github.com/pi-hole/pi-hole/security/advisories/GHSA-95g6-7q26-mp9x");
  script_xref(name:"URL", value:"https://github.com/pi-hole/pi-hole/commit/9dd138b03348f24a001d60f27e29c8c62af28871");
  script_xref(name:"URL", value:"https://github.com/pi-hole/pi-hole/commit/f3af03174e676c20e502a92ed7842159f2fdeb7e");

  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: "5.18")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "5.18", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);