BeyondTrust Privileged Remote Access (PRA) < 25.3.3 Multiple Vulnerabilities (BT26-03)

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

include('compat.inc');

if (description)
{
  script_id(325645);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/09");

  script_cve_id("CVE-2026-40138", "CVE-2026-40140", "CVE-2026-40141");

  script_name(english:"BeyondTrust Privileged Remote Access (PRA) < 25.3.3 Multiple Vulnerabilities (BT26-03)");

  script_set_attribute(attribute:"synopsis", value:
"An application running on the remote web server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of BeyondTrust Privileged Remote Access (PRA) running on the remote host is prior to 25.3.3. It is,
therefore, affected by multiple vulnerabilities:

  - A critical pre-authentication vulnerability in the authentication subsystem. Improper validation of
    authentication data may allow a network-positioned attacker to bypass access controls and gain unauthorized
    access to the appliance, including accounts with elevated privileges. (CVE-2026-40138)

  - A high-severity pre-authentication vulnerability in the network communication subsystem. Insufficient
    validation of client-supplied input may allow an unauthenticated remote attacker to trigger a
    denial-of-service condition affecting appliance availability. (CVE-2026-40140)

  - A high-severity vulnerability in a web application component related to the processing of certain input
    parameters. Insufficient validation of user-supplied input may allow an authenticated attacker with limited
    privileges to access unintended resources or data beyond their authorization scope. (CVE-2026-40141)

Note that Nessus has not tested for these issues 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/bt26-03");
  script_set_attribute(attribute:"solution", value:
"Upgrade to BeyondTrust Privileged Remote Access (PRA) version 25.3.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-40141");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-40138");

  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:"2026/06/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/08");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:beyondtrust:privileged_remote_access");
  script_end_attributes();

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

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

  script_dependencies("beyondtrust_privileged_remote_access_detect.nbin");
  script_require_keys("installed_sw/BeyondTrust Privileged Remote Access");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'BeyondTrust Privileged Remote Access', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '25.3.3'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);