PRTG Network Monitor XSS Vulnerability

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.106246");
  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:"2016-09-15 09:47:18 +0700 (Thu, 15 Sep 2016)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-06-29 13:49:00 +0000 (Tue, 29 Jun 2021)");

  script_cve_id("CVE-2016-5078");

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

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

  script_name("PRTG Network Monitor XSS Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("General");
  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 cross-site scripting vulnerability.");

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

  script_tag(name:"insight", value:"The vulnerability allows a malicious actor to inject persistent JavaScript
and HTML code into various fields within PRTG's Network Monitor web management interface. When this data is
viewed within the web console the code will execute within the context of the authenticated user. This will
allow a malicious actor to conduct attacks which can be used to modify the system configuration, compromise data,
take control of the product or launch attacks against the authenticated user's host system.

The persistent XSS vulnerability is delivered via the network SNMP discovery process of a device. If the network
device that is discovered contains JavaScript or HTML code specified as the following SNMP OID objects, then
the code will be rendered within the context of the authenticated user who views the 'System Information' web
page of the discovered device.");

  script_tag(name:"impact", value:"A successful exploit could allow an attacker to execute arbitrary script
code in the context of the authenticated user.");

  script_tag(name:"affected", value:"PRTG Network Monitor before 16.2.24.4045");

  script_tag(name:"solution", value:"Update to 16.2.24.4045");

  script_xref(name:"URL", value:"https://community.rapid7.com/community/infosec/blog/2016/09/07/multiple-disclosures-for-multiple-network-management-systems-part-2");

  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: "16.2.24.4045")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "16.2.24.4045");
  security_message(port: port, data: report);
  exit(0);
}

exit(0);