BeyondTrust Remote Support (RS) 24.2.2 < 24.3.3 Server-Side Template Injection

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

include('compat.inc');

if (description)
{
  script_id(240181);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/08");

  script_cve_id("CVE-2025-5309");
  script_xref(name:"IAVA", value:"2025-A-0440");

  script_name(english:"BeyondTrust Remote Support (RS) 24.2.2 < 24.3.3 Server-Side Template Injection");

  script_set_attribute(attribute:"synopsis", value:
"An application running on the remote web server is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of BeyondTrust Remote Support (RS) running on the remote host is affected by a server-side template
injection vulnerability which can lead to remote code execution.

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.beyondtrust.com/trust-center/security-advisories/bt25-04");
  script_set_attribute(attribute:"solution", value:
"Upgrade BeyondTrust Remote Support (RS) according to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-5309");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/06/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/06/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/06/19");

  script_set_attribute(attribute:"agent", value:"windows");
  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:beyondtrust:remote_support");
  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("beyondtrust_remote_support_detect.nbin", "beyondtrust_remote_support_win_installed.nbin");
  script_require_keys("installed_sw/BeyondTrust Remote Support");

  exit(0);
}

include('vcf_extras_beyondtrust.inc');

var app = 'BeyondTrust Remote Support';
get_install_count(app_name:app, exit_if_zero:TRUE);

var app_info = vcf::beyondtrust::remote_support::get_app_info();

if (empty_or_null(app_info)) audit(AUDIT_NOT_INST, app);

var constraints = [
  {'min_version': '24.2.2', 'max_version': '24.2.4', 'fixed_display': 'Apply patch HELP-10826-2', 'patches': ['HELP-10826-2']},
  {'min_version': '24.3.1', 'fixed_version': '24.3.4', 'fixed_display': '24.3.4 or patch HELP-10826-2', 'patches': ['HELP-10826-2']},
  {'equal': '25.1.1', 'fixed_display': 'Apply patch HELP-10826-1', 'patches': ['HELP-10826-1']}
];

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