NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX579459)

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

include('compat.inc');

if (description)
{
  script_id(183026);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/18");

  script_cve_id("CVE-2023-4966", "CVE-2023-4967");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2023/11/08");
  script_xref(name:"CEA-ID", value:"CEA-2023-0054");
  script_xref(name:"IAVA", value:"2023-A-0536-S");

  script_name(english:"NetScaler ADC and NetScaler Gateway Multiple Vulnerabilities (CTX579459)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device may be affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NetScaler ADC (formerly Citrix ADC) or NetScaler Gateway (formerly Citrix Gateway) device is version 12.1,
13.0 before 13.0-92.19, 13.1 before 13.1-49.15, or 14.1 before 14.1.8.50. It is therefore affected by multiple
vulnerabilities: 

  - Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN
    virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. (CVE-2023-4966)

  - Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server,
    ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. (CVE-2023-4967)

Please refer to advisory CTX579459 for more information.

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/article/CTX579459/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20234966-and-cve20234967
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2ad4af96");
  script_set_attribute(attribute:"solution", value:
"Upgrade to version 13.0-92.19, 13.1-49.15, 14.1-8.50 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-4966");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/10/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/13");

  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) 2023-2024 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 = [
  {'min_version': '12.1', 'fixed_version': '12.9999999', 'fixed_display': '12.1 is now End Of Life (EOL) and is vulnerable. Contact the vendor.'},
  {'min_version': '13.0', 'fixed_version': '13.0.92.19', 'fixed_display': '13.0-92.19'},
  {'min_version': '13.1', 'fixed_version': '13.1.49.15', 'fixed_display': '13.1-49.15'},
  {'min_version': '14.1', 'fixed_version': '14.1.8.50', 'fixed_display': '14.1-8.50'},
];

vcf::citrix_netscaler::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_HOLE
);