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openvasCopyright (C) 2023 Greenbone AGOPENVAS:1361412562310832026
HistoryMar 15, 2023 - 12:00 a.m.

Microsoft Outlook 2016 Elevation of Privilege Vulnerability (KB5002254)

2023-03-1500:00:00
Copyright (C) 2023 Greenbone AG
plugins.openvas.org
14
microsoft outlook 2016
elevation of privilege
vulnerability
ntlm authentication
security update

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.7

Confidence

High

EPSS

0.867

Percentile

98.7%

This host is missing an important security
update according to Microsoft KB5002254

# SPDX-FileCopyrightText: 2023 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.832026");
  script_version("2023-10-13T05:06:10+0000");
  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");
  script_cve_id("CVE-2023-23397");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2023-10-13 05:06:10 +0000 (Fri, 13 Oct 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-03-14 18:04:00 +0000 (Tue, 14 Mar 2023)");
  script_tag(name:"creation_date", value:"2023-03-15 09:32:56 +0530 (Wed, 15 Mar 2023)");
  script_name("Microsoft Outlook 2016 Elevation of Privilege Vulnerability (KB5002254)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB5002254");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present
  on the target host.");

  script_tag(name:"insight", value:"The flaw exists due to an improper implementation
  of NTLM Authentication in Microsoft Outlook software.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to elevate privileges on an affected system.");

  script_tag(name:"affected", value:"Microsoft Outlook 2016.");

  script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"executable_version");
  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/help/5002254");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_office_products_version_900032.nasl");
  script_mandatory_keys("SMB/Office/Outlook/Version");
  script_require_ports(139, 445);
  exit(0);
}
include("smb_nt.inc");
include("host_details.inc");
include("version_func.inc");
include("secpod_smb_func.inc");

outlookVer = get_kb_item("SMB/Office/Outlook/Version");
if(!outlookVer|| outlookVer !~ "^16\."){
  exit(0);
}

outlookFile = registry_get_sz(key:"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\OUTLOOK.EXE", item:"Path");
if(!outlookFile){
  exit(0);
}

outlookVer = fetch_file_version(sysPath:outlookFile, file_name:"outlook.exe");
if(!outlookVer){
  exit(0);
}

if(version_in_range(version:outlookVer, test_version:"16.0", test_version2:"16.0.5387.0999")){
  report = report_fixed_ver(file_checked: outlookFile + "outlook.exe",
                            file_version:outlookVer, vulnerable_range:"16.0 - 16.0.5387.0999");
  security_message(data:report);
  exit(0);
}
exit(99);

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.7

Confidence

High

EPSS

0.867

Percentile

98.7%