Drupal 7.x < 7.73 / 8.8.x < 8.8.10 / 8.9.x < 8.9.6 / 9.0.x < 9.0.6 XSS (drupal-2020-09-16)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(140766);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2020-13666");
  script_xref(name:"IAVA", value:"2020-A-0433-S");

  script_name(english:"Drupal 7.x < 7.73 / 8.8.x < 8.8.10 / 8.9.x < 8.9.6 / 9.0.x < 9.0.6 XSS (drupal-2020-09-16)");

  script_set_attribute(attribute:"synopsis", value:
"A PHP application running on the remote web server is affected by a cross-site scripting vulnerability");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the instance of Drupal running on the remote web server is 7.x prior to 7.73, 
8.8.x prior to 8.8.10, 8.9.x prior to 8.9.6, or 9.0.x prior to 9.0.6. It is, therefore, affected by a cross-site 
scripting (XSS) vulnerability in the AJAX API component due to improper validation of user-supplied input before 
returning it to users. An authenticated, remote attacker can exploit this, by convincing a user to click a specially 
crafted URL, to execute arbitrary script code in a user's browser session.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version 
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.drupal.org/sa-core-2020-007");
  script_set_attribute(attribute:"see_also", value:"https://www.drupal.org/project/drupal/releases/7.73");
  script_set_attribute(attribute:"see_also", value:"https://www.drupal.org/project/drupal/releases/8.8.10");
  script_set_attribute(attribute:"see_also", value:"https://www.drupal.org/project/drupal/releases/8.9.6");
  script_set_attribute(attribute:"see_also", value:"https://www.drupal.org/project/drupal/releases/9.0.6");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Drupal version 7.73 / 8.8.10 / 8.9.6 / 9.0.6 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-13666");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/24");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:drupal:drupal");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("drupal_detect.nasl");
  script_require_keys("installed_sw/Drupal", "Settings/ParanoidReport");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include('vcf.inc');
include('http.inc');

if (report_paranoia < 2)
  audit(AUDIT_PARANOID);

port = get_http_port(default:80, php:TRUE);
app_info = vcf::get_app_info(app:'Drupal', port:port, webapp:TRUE);

vcf::check_granularity(app_info:app_info, sig_segments:2);

constraints = [
  { 'min_version' : '7.0', 'fixed_version' : '7.73' },
  { 'min_version' : '8.8', 'fixed_version' : '8.8.10' },
  { 'min_version' : '8.9', 'fixed_version' : '8.9.6' },
  { 'min_version' : '9.0', 'fixed_version' : '9.0.6' }
];

vcf::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_WARNING,
  flags:{'xss':TRUE}
);