CrowdStrike Falcon Sensor 7.16.x < 7.16.18637 / 7.24.19608 / 7.25.19706 / 7.26.19809 / 7.26.19811 / 7.27.19907 / 7.28.20006 Multiple Vulnerabilities

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

include('compat.inc');

if (description)
{
  script_id(270001);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/17");

  script_cve_id("CVE-2025-42701", "CVE-2025-42706");
  script_xref(name:"IAVA", value:"2025-A-0737");

  script_name(english:"CrowdStrike Falcon Sensor 7.16.x < 7.16.18637 / 7.24.19608 / 7.25.19706 / 7.26.19809 / 7.26.19811 / 7.27.19907 / 7.28.20006 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The version of CrowdStrike Falcon Sensor installed on the remote host is prior to 7.16.18637, 7.24.19608, 7.25.19707,
7.26.19813, 7.27.19909, or 7.28.20008. It is, therefore, affected by multiple vulnerabilities as referenced
in the vendor advisory.

  - A race condition exists in the Falcon sensor for Windows that could allow an attacker, with the prior
    ability to execute code on a host, to delete arbitrary files. CrowdStrike released a security fix for this
    issue in Falcon sensor for Windows versions 7.24 and above and all Long Term Visibility (LTV) sensors.
    There is no indication of exploitation of these issues in the wild. Our threat hunting and intelligence
    team are actively monitoring for exploitation and we maintain visibility into any such attempts. The
    Falcon sensor for Mac, the Falcon sensor for Linux and the Falcon sensor for Legacy Systems are not
    impacted by this. CrowdStrike was made aware of this issue through our HackerOne bug bounty program. It
    was discovered by Cong Cheng and responsibly disclosed. (CVE-2025-42701)

  - A logic error exists in the Falcon sensor for Windows that could allow an attacker, with the prior ability
    to execute code on a host, to delete arbitrary files. CrowdStrike released a security fix for this issue
    in Falcon sensor for Windows versions 7.24 and above and all Long Term Visibility (LTV) sensors. There is
    no indication of exploitation of these issues in the wild. Our threat hunting and intelligence teams are
    actively monitoring for exploitation and we maintain visibility into any such attempts. The Falcon sensor
    for Mac, the Falcon sensor for Linux and the Falcon sensor for Legacy Systems are not impacted by this.
    CrowdStrike was made aware of this issue through our HackerOne bug bounty program. It was discovered by
    Cong Cheng and responsibly disclosed. (CVE-2025-42706)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://www.crowdstrike.com/en-us/security-advisories/issues-affecting-crowdstrike-falcon-sensor-for-windows/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b23f71a7");
  script_set_attribute(attribute:"solution", value:
"Upgrade to CrowdStrike Falcon Sensor version 7.16.18637 / 7.24.19608 / 7.25.19707 / 7.26.19813 / 7.27.19909
/ 7.28.20008 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/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-2025-42706");

  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:"2025/10/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/a:crowdstrike:falcon_sensor");
  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) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("crowdstrike_falcon_sensor_win_installed.nbin");
  script_require_keys("installed_sw/CrowdStrike Falcon Sensor");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [{'scope': 'target', 'match': {'os': 'windows'}}],
  'checks': [{
    'product': {'name': 'CrowdStrike Falcon Sensor', 'type': 'app'},
    'check_algorithm': 'default',
    'constraints': [
      { 'fixed_version' : '7.16', 'fixed_display' : '7.24.19608' },
      { 'min_version' : '7.16', 'max_version' : '7.16.18635', 'fixed_version' : '7.16.18637' },
      { 'min_version' : '7.17', 'max_version' : '7.24.19607', 'fixed_version' : '7.24.19608' },
      { 'fixed_version' : '7.25.19707', 'equal' : '7.25.19706' },
      { 'fixed_version' : '7.26.19813', 'equal' : '7.26.19811' },
      { 'fixed_version' : '7.26.19813', 'equal' : '7.26.19809' },
      { 'fixed_version' : '7.27.19909', 'equal' : '7.27.19907' },
      { 'fixed_version' : '7.28.20008', 'equal' : '7.28.20006' }
  ]}
]};

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