Discourse < 2.3.0.beta5 Multiple Vulnerabilities

# SPDX-FileCopyrightText: 2019 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:discourse:discourse";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.108598");
  script_version("2025-08-07T05:44:51+0000");
  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-2019-5418", "CVE-2019-5419", "CVE-2019-5420");
  script_tag(name:"last_modification", value:"2025-08-07 05:44:51 +0000 (Thu, 07 Aug 2025)");
  script_tag(name:"creation_date", value:"2019-06-17 06:03:35 +0000 (Mon, 17 Jun 2019)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-11-03 18:19:00 +0000 (Wed, 03 Nov 2021)");
  script_name("Discourse < 2.3.0.beta5 Multiple Vulnerabilities");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_discourse_http_detect.nasl");
  script_mandatory_keys("discourse/detected");

  script_tag(name:"summary", value:"Discourse is prone to multiple vulnerabilities in Ruby on Rails.");

  script_tag(name:"affected", value:"Discourse before version 2.3.0.beta5.");

  script_tag(name:"solution", value:"Update to version 2.3.0.beta5.");

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

  script_xref(name:"URL", value:"https://meta.discourse.org/t/discourse-2-3-0-beta5-release-notes/111727");

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

  exit(0);
}

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

if( ! 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 );

vers = infos["version"];

if( version_is_less( version:vers, test_version:"2.3.0" ) ||
    version_in_range( version:vers, test_version:"2.3.0.beta1", test_version2:"2.3.0.beta4" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"2.3.0.beta5", install_path:infos["location"] );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );