Citrix Virtual Apps and Desktops RCE (CTX583930)

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

include('compat.inc');

if (description)
{
  script_id(189179);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/12");

  script_cve_id("CVE-2023-6184");
  script_xref(name:"IAVA", value:"2024-A-0038-S");

  script_name(english:"Citrix Virtual Apps and Desktops RCE (CTX583930)");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote Windows host is affected by a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Citrix Virtual Apps and Desktops installed on the remote Windows host is affected by a remote code
execution vulnerability. A remote, authenticated attacker must possess admin privileges to the Session Recording server,
if exploited, may result in an authenticated user being able to perform an RCE

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://support.citrix.com/article/CTX583930");
  script_set_attribute(attribute:"solution", value:
"Refer to vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C");
  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:H/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-6184");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/01/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/01/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:citrix:virtual_apps_and_desktops");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("citrix_virtual_apps_and_desktops_installed.nbin");
  script_require_keys("installed_sw/Citrix Virtual Apps and Desktops");

  exit(0);
}

include('vcf.inc');

var app_info = vcf::get_app_info(app:'Citrix Virtual Apps and Desktops', win_local:TRUE);
var dv = app_info['display_version'];
var cu = app_info['CU'];
var comp = app_info['App'];
var constraints;

if ('session recording' >!< tolower(comp) )
  audit(AUDIT_OS_CONF_NOT_VULN, app_info['app']);

if ('2203 LTSR' >< dv)	
{
  if (empty_or_null(cu) || cu == 0 || cu < 4)
    constraints = [{ 'min_version' : '7.2203', 'max_version':'7.2203', 'fixed_display' : 'See Solution.' }];
  else
    audit(AUDIT_HOST_NOT, "affected"); 
}
else if ('1912 LTSR' >< dv)
{
  if (empty_or_null(cu) || cu == 0 || cu < 8)
    constraints = [{ 'min_version' : '7.1912', 'max_version':'7.1912', 'fixed_display' : 'See Solution.' }];     
  else
    audit(AUDIT_HOST_NOT, "affected");  
}
else
  constraints = [{ 'min_version' : '0.0', 'fixed_version':'7.2311', 'fixed_display' : 'See Solution.' }];

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