Pi-hole Web Interface < 4.3.3 RCE Vulnerability

# SPDX-FileCopyrightText: 2020 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:web_interface";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.108734");
  script_version("2025-11-06T05:40:15+0000");
  script_tag(name:"last_modification", value:"2025-11-06 05:40:15 +0000 (Thu, 06 Nov 2025)");
  script_tag(name:"creation_date", value:"2020-03-30 07:42:25 +0000 (Mon, 30 Mar 2020)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-04 17:15:00 +0000 (Tue, 04 Aug 2020)");

  script_cve_id("CVE-2020-8816");

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

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

  script_name("Pi-hole Web Interface < 4.3.3 RCE Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_pi-hole_consolidation.nasl");
  script_mandatory_keys("pi-hole/detected");

  script_tag(name:"summary", value:"The Pi-hole Web Interface (previously AdminLTE) is prone to a
  remote code execution (RCE) vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists because the application does not adequately
  validate input in the MAC address validator before reusing it in a shell command.");

  script_tag(name:"impact", value:"The RCE allows an authenticated user to execute arbitrary
  commands on the underlying server with the privileges of the local user running the service.");

  script_tag(name:"affected", value:"Pi-hole Web Interface (previously AdminLTE) prior to version
  4.3.3.");

  script_tag(name:"solution", value:"Update to version 4.3.3 or later.");

  script_xref(name:"URL", value:"https://github.com/pi-hole/AdminLTE/pull/1165");
  script_xref(name:"URL", value:"https://github.com/pi-hole/AdminLTE/releases/tag/v4.3.3");
  script_xref(name:"URL", value:"https://natedotred.wordpress.com/2020/03/28/cve-2020-8816-pi-hole-remote-code-execution/");
  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");

  exit(0);
}

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

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

if (version_is_less(version: version, test_version: "4.3.3")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.3.3");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);