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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS24_APR_OUTLOOK_FOR_WINDOWS.NASL
HistoryApr 12, 2024 - 12:00 a.m.

Security Updates Outlook for Windows (April 2024)

2024-04-1200:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
30
microsoft outlook
security update
spoofing vulnerability
external attackers
specially crafted emails
net-ntlmv2 hash
untrusted network
nessus scanner

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.4%

The Microsoft Outlook application installed on the remote host is missing a security update. It is, therefore, affected by a spoofing vulnerability. External attackers could send specially crafted emails that will cause a connection from the victim to an untrusted location of attackers’ control. This will leak the Net-NTLMv2 hash of the victim to the untrusted network which an attacker can then relay to another service and authenticate as the victim.

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

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
##

include('compat.inc');

if (description)
{
  script_id(193266);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/15");

  script_cve_id("CVE-2024-20670");
  script_xref(name:"IAVA", value:"2024-A-0225");

  script_name(english:"Security Updates Outlook for Windows (April 2024)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Outlook application installed on the remote host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Outlook application installed on the remote host is missing a security update. It is, therefore, affected
by a spoofing vulnerability. External attackers could send specially crafted emails that will cause a connection from 
the victim to an untrusted location of attackers' control. This will leak the Net-NTLMv2 hash of the victim to the 
untrusted network which an attacker can then relay to another service and authenticate as the victim.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20670
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?02d9198f");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released KB5002574 to address this issue.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N");
  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:N/UI:R/S:U/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-20670");

  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:"2024/04/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/04/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  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) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "wmi_enum_windows_app_store.nbin");
  script_require_keys("SMB/Registry/Enumerated", "WMI/Windows App Store/Enumerated");
  script_require_ports(139, 445);

  exit(0);
}

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

var apps = ['Microsoft.OutlookForWindows'];

var app_info = vcf::microsoft_appstore::get_app_info(app_list:apps);

vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [ {'fixed_version' : '1.2023.0322.0100' } ];

vcf::microsoft_appstore::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);
VendorProductVersionCPE
microsoftwindowscpe:/o:microsoft:windows

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.4%

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