PRTG Network Monitor < 18.2.39 Command Injection Vulnerability

# SPDX-FileCopyrightText: 2018 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:paessler:prtg_network_monitor";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.141242");
  script_version("2025-09-05T15:40:40+0000");
  script_tag(name:"last_modification", value:"2025-09-05 15:40:40 +0000 (Fri, 05 Sep 2025)");
  script_tag(name:"creation_date", value:"2018-06-28 14:22:43 +0200 (Thu, 28 Jun 2018)");
  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:H/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-04-12 13:42:00 +0000 (Mon, 12 Apr 2021)");

  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");
  script_cve_id("CVE-2018-9276");

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

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

  script_name("PRTG Network Monitor < 18.2.39 Command Injection Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_prtg_network_monitor_detect.nasl");
  script_mandatory_keys("prtg_network_monitor/installed");

  script_tag(name:"summary", value:"PRTG Network Monitor is prone to a command injection vulnerability.");

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

  script_tag(name:"affected", value:"PRTG Network Monitor prior to version 18.2.39.");

  script_tag(name:"solution", value:"Update to version 18.2.39 or later.");

  script_xref(name:"URL", value:"https://www.codewatch.org/blog/?p=453");

  exit(0);
}

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

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

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

if (version_is_less(version: version, test_version: "18.2.39")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "18.2.39");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);