Discourse < 2.5.0.beta5 Multiple Vulnerabilities

# 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:discourse:discourse";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.108764");
  script_version("2025-04-11T15:45:04+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-2020-11022", "CVE-2020-11023");
  script_tag(name:"last_modification", value:"2025-04-11 15:45:04 +0000 (Fri, 11 Apr 2025)");
  script_tag(name:"creation_date", value:"2020-05-28 11:42:13 +0000 (Thu, 28 May 2020)");
  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:3.1/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:"2021-07-20 23:15:00 +0000 (Tue, 20 Jul 2021)");

  script_name("Discourse < 2.5.0.beta5 Multiple Vulnerabilities");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 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.");

  script_tag(name:"insight", value:"The following flaws exist / The following security fixes are included:

  - Re-adds accidentally reverted commit: Ensure embed_url contains valid http(s) uri

  - ERB execution in custom Email Style

  - Updates jQuery to 3.5.0 (from 3.4.1)");

  script_tag(name:"affected", value:"Discourse up to and including version 2.5.0.beta4.");

  script_tag(name:"solution", value:"Update to version 2.5.0.beta5 or later.");

  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-2-5-0-beta5-release-notes/152760");

  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:"2.5.0" ) ||
    version_in_range( version:vers, test_version:"2.5.0.beta1", test_version2:"2.5.0.beta4" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"2.5.0.beta5", install_path:infos["location"] );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );