Ruby on Rails 'strip_tags' XSS Vulnerability (Nov 2009)

# SPDX-FileCopyrightText: 2009 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:rubyonrails:rails";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.801078");
  script_version("2025-09-09T05:38:49+0000");
  script_tag(name:"last_modification", value:"2025-09-09 05:38:49 +0000 (Tue, 09 Sep 2025)");
  script_tag(name:"creation_date", value:"2009-12-09 07:52:52 +0100 (Wed, 09 Dec 2009)");
  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_cve_id("CVE-2009-4214");
  script_name("Ruby on Rails 'strip_tags' XSS Vulnerability (Nov 2009)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_rails_consolidation.nasl");
  script_mandatory_keys("rails/detected");

  script_xref(name:"URL", value:"http://secunia.com/advisories/37446");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/37142");
  script_xref(name:"URL", value:"http://www.securitytracker.com/id?1023245");
  script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2009/3352");
  script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2009/11/27/2");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker to execute arbitrary script code
  in the browser of an unsuspecting user in the context of the affected site or
  steal cookie-based authentication credentials and launch other attacks.");

  script_tag(name:"affected", value:"Ruby on Rails version before 2.3.5.");

  script_tag(name:"insight", value:"This issue is due to the error in 'strip_tagi()' function which is
  not properly escaping non-printable ascii characters.");

  script_tag(name:"solution", value:"Update to version 2.3.5 or later.");

  script_tag(name:"summary", value:"Ruby on Rails is prone to a cross-site scripting (XSS) vulnerability.");

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

  exit(0);
}

include("version_func.inc");
include("host_details.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:"2.3.5" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"2.3.5", install_path:location );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );