Security Updates for Windows Defender (September 2023)

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

include('compat.inc');

if (description)
{
  script_id(181341);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/13");

  script_cve_id("CVE-2023-38163");
  script_xref(name:"IAVA", value:"2023-A-0488-S");

  script_name(english:"Security Updates for Windows Defender (September 2023)");

  script_set_attribute(attribute:"synopsis", value:
"An antimalware application installed on the remote host is affected by an attack surface reduction vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Malware Protection Engine version of Microsoft Windows Defender installed on the remote Windows host is prior to
1.1.23080.2005. It is, therefore, affected by an attack surface reduction vulnerability due to security features bypass. 
A remote attacker can trick a victim to open a specially crafted file and bypass the Windows Defender Attack Surface 
Reduction blocking feature.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.

Note: this plugin will not fire if Windows Defender is disabled.");
  # https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/manage-updates-baselines-microsoft-defender-antivirus?view=o365-worldwide
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3bed4ba6");
  # https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38163
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d2a175a3");
  script_set_attribute(attribute:"solution", value:
"Update Microsoft Defender to engine version 1.1.23080.2005 to address this issue.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/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:L/AC:L/PR:N/UI:R/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-2023-38163");

  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:"2023/09/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:windows_defender");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_windows_defender_win_installed.nbin");
  script_require_keys("installed_sw/Windows Defender");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

var app = 'Windows Defender';

var app_info = vcf::get_app_info(app:app, win_local:TRUE);

# Check if disabled
if (!isnull(app_info['Disabled']))
  exit(0,'Windows Defender is disabled.');

# Check if we got the Malware Engine Version
if (isnull(app_info['Engine Version']))
  exit(0,'Unable to get the Malware Engine Version.');

var constraints = [
{'fixed_version':'1.1.23080.2005'}
];

vcf::av_checks::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE, check:'Engine Version');