NetScaler ADC and NetScaler Gateway XSS (CTX695486)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(275434);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id("CVE-2025-12101");
  script_xref(name:"IAVA", value:"2025-A-0831-S");

  script_name(english:"NetScaler ADC and NetScaler Gateway XSS (CTX695486)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote NetScaler ADC (formerly Citrix ADC) or NetScaler Gateway (formerly Citrix Gateway) device is
version 14.1 prior to 14.1-56.73, 13.1 prior to 13.1-60.32, 13.1-FIPS prior to 13.1-37.250-FIPS, or 12.1-FIPS
prior to 12.1-55.333-FIPS. It is, therefore, affected by a cross-site scripting vulnerability.

  - Cross-Site Scripting (XSS) in NetScaler ADC and NetScaler Gateway when the appliance is configured as a
  Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server. (CVE-2025-12101)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX695486
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f056eb01");
  script_set_attribute(attribute:"solution", value:
"Upgrade to NetScaler ADC or NetScaler Gateway version 13.1-60.32, 14.1-56.73 12.1-55.333-FIPS, 13.1-37.250-FIPS or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:P/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-12101");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/11/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/14");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:citrix:netscaler_gateway");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:citrix:netscaler_application_delivery_controller");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("citrix_netscaler_detect.nbin");
  script_require_keys("Host/NetScaler/Detected");

  exit(0);
}

include('vcf_extras_netscaler.inc');

var app_info = vcf::citrix_netscaler::get_app_info();

var constraints;

if (app_info['fips_status'] == 1)
  constraints = [
    {'fips':TRUE, 'min_version': '12.1', 'fixed_version': '12.1.55.333', 'fixed_display':'12.1-55.333-FIPS'},
    {'fips':TRUE, 'min_version': '13.1', 'fixed_version': '13.1.37.250', 'fixed_display':'13.1-37.250-FIPS'}
  ];
else
  constraints = [
    {'min_version': '12.1', 'fixed_version': '12.1.9999999',
      'fixed_display': '12.1 is now End Of Life (EOL) and is vulnerable. Upgrade to a supported fixed release.'},
    {'min_version': '13.0', 'fixed_version': '13.0.9999999',
      'fixed_display': '13.0 is now End Of Life (EOL) and is vulnerable. Upgrade to a supported fixed release.'},
    {'min_version': '13.1', 'fixed_version': '13.1.60.32', 'fixed_display': '13.1-60.32'},
    {'min_version': '14.1', 'fixed_version': '14.1.56.73', 'fixed_display': '14.1-56.73'}
  ];

vcf::citrix_netscaler::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_HOLE,
  flags:{xss:TRUE}
);