Tenable Nessus < 10.0.0 Privilege Escalation Vulnerability (TNS-2021-18)

# SPDX-FileCopyrightText: 2021 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:tenable:nessus";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.147103");
  script_version("2023-11-17T16:10:13+0000");
  script_tag(name:"last_modification", value:"2023-11-17 16:10:13 +0000 (Fri, 17 Nov 2023)");
  script_tag(name:"creation_date", value:"2021-11-04 07:36:36 +0000 (Thu, 04 Nov 2021)");
  script_tag(name:"cvss_base", value:"4.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/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:"2021-11-05 16:31:00 +0000 (Fri, 05 Nov 2021)");

  script_cve_id("CVE-2021-20135");

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

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

  script_name("Tenable Nessus < 10.0.0 Privilege Escalation Vulnerability (TNS-2021-18)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_tenable_nessus_consolidation.nasl");
  script_mandatory_keys("tenable/nessus/detected");

  script_tag(name:"summary", value:"Tenable Nessus is prone to a privilege escalation vulnerability.");

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

  script_tag(name:"insight", value:"Tenable Nessus contains a local privilege escalation vulnerability which
  could allow an authenticated, local administrator to run specific executables on the Nessus Agent
  host.");

  script_tag(name:"affected", value:"Tenable Nessus version 8.15.2 and prior.");

  script_tag(name:"solution", value:"Update to version 10.0.0 or later.");

  script_xref(name:"URL", value:"https://www.tenable.com/security/tns-2021-18");

  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: "10.0.0")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "10.0.0", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);