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nessusThis script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS20_FEB_4537764.NASL
HistoryFeb 11, 2020 - 12:00 a.m.

KB4537764: Windows 10 Version 1607 and Windows Server 2016 February 2020 Security Update

2020-02-1100:00:00
This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
112

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.972 High

EPSS

Percentile

99.9%

The remote Windows host is missing security update 4537764. It is, therefore, affected by multiple vulnerabilities :

  • An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode.
    An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-0670)

  • A remote code execution vulnerability exists in the Windows Remote Desktop Client when a user connects to a malicious server. An attacker who successfully exploited this vulnerability could execute arbitrary code on the computer of the connecting client. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
    (CVE-2020-0681, CVE-2020-0734, CVE-2020-0817)

  • A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory.
    An attacker who successfully exploited the vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit a malicious webpage. The security update addresses the vulnerability by correcting how Windows Media Foundation handles objects in memory. (CVE-2020-0738)

  • An information disclosure vulnerability exists in the way that affected Microsoft browsers handle cross-origin requests. An attacker who successfully exploited this vulnerability could determine the origin of all of the web pages in the affected browser. (CVE-2020-0706)

  • An information disclosure vulnerability exists in the Windows Common Log File System (CLFS) driver when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. (CVE-2020-0658)

  • An elevation of privilege vulnerability exists in the way that the tapisrv.dll handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.
    (CVE-2020-0737)

  • An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory.
    An attacker who successfully exploited the vulnerability could execute code with elevated permissions.
    (CVE-2020-0668)

  • A security feature bypass vulnerability exists in secure boot. An attacker who successfully exploited the vulnerability can bypass secure boot and load untrusted software. (CVE-2020-0689)

  • An elevation of privilege vulnerability exists in the way that the Connected Devices Platform Service handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2020-0742, CVE-2020-0743, CVE-2020-0749, CVE-2020-0750)

  • An elevation of privilege vulnerability exists in the way that the dssvc.dll handles file creation allowing for a file overwrite or creation in a secured location.
    An attacker who successfully exploited the vulnerability could execute code with elevated permissions.
    (CVE-2020-0739)

  • An elevation of privilege vulnerability exists when the Windows Wireless Network Manager improperly handles memory. (CVE-2020-0704)

  • An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
    (CVE-2020-0691)

  • An elevation of privilege vulnerability exists in Active Directory Forest trusts due to a default setting that lets an attacker in the trusting forest request delegation of a TGT for an identity from the trusted forest. (CVE-2020-0665)

  • An elevation of privilege vulnerability exists in Windows Error Reporting (WER) when WER handles and executes files. The vulnerability could allow elevation of privilege if an attacker can successfully exploit it.
    An attacker who successfully exploited the vulnerability could gain greater access to sensitive information and system functionality. (CVE-2020-0753, CVE-2020-0754)

  • An elevation of privilege vulnerability exists when the Windows Data Sharing Service improperly handles file operations. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could exploit this vulnerability by running a specially crafted application on the victim system. The update addresses the vulnerability by correcting the way the Windows Data Sharing Service handles file operations. (CVE-2020-0659, CVE-2020-0747)

  • A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system. (CVE-2020-0661)

  • An information disclosure vulnerability exists when the win32k component improperly provides kernel information.
    An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2020-0716)

  • A remote code execution vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could execute arbitrary code with elevated permissions on a target system. (CVE-2020-0662)

  • An elevation of privilege vulnerability exists in the Windows Installer when MSI packages process symbolic links. An attacker who successfully exploited this vulnerability could bypass access restrictions to add or remove files. (CVE-2020-0683, CVE-2020-0686)

  • An elevation of privilege vulnerability exists when the Windows Backup Service improperly handles file operations. (CVE-2020-0703)

  • A remote code execution vulnerability exists in Microsoft Windows that could allow remote code execution if a .LNK file is processed. An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. (CVE-2020-0729)

  • An elevation of privilege vulnerability exists when the Windows IME improperly handles memory. (CVE-2020-0707)

  • An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2020-0657)

  • An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs;
    view, change, or delete data; or create new accounts with full user rights. (CVE-2020-0719, CVE-2020-0720, CVE-2020-0721, CVE-2020-0722, CVE-2020-0723, CVE-2020-0724, CVE-2020-0725, CVE-2020-0726, CVE-2020-0731)

  • An elevation of privilege vulnerability exists when the Connected User Experiences and Telemetry Service improperly handles file operations. An attacker who successfully exploited this vulnerability could gain elevated privileges on the victim system.
    (CVE-2020-0727)

  • An elevation of privilege vulnerability exists when the Windows User Profile Service (ProfSvc) improperly handles symlinks. An attacker who successfully exploited this vulnerability could delete files and folders in an elevated context. (CVE-2020-0730)

  • An information vulnerability exists when Windows Modules Installer Service improperly discloses file information.
    Successful exploitation of the vulnerability could allow the attacker to read any file on the file system.
    (CVE-2020-0728)

  • An elevation of privilege vulnerability exists in the way that the Windows Function Discovery Service handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2020-0679, CVE-2020-0680, CVE-2020-0682)

  • An information disclosure vulnerability exists when the Windows Network Driver Interface Specification (NDIS) improperly handles memory. (CVE-2020-0705)

  • An information disclosure vulnerability exists in the Cryptography Next Generation (CNG) service when it fails to properly handle objects in memory. (CVE-2020-0675, CVE-2020-0676, CVE-2020-0677, CVE-2020-0748, CVE-2020-0755, CVE-2020-0756)

  • A denial of service vulnerability exists in Remote Desktop Protocol (RDP) when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the RDP service on the target system to stop responding. (CVE-2020-0660)

  • An information disclosure vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in memory, allowing an attacker to retrieve information from a targeted system. By itself, the information disclosure does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability. (CVE-2020-0744)

  • An elevation of privilege vulnerability exists when DirectX improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
    (CVE-2020-0709, CVE-2020-0732)

  • A remote code execution vulnerability exists in Remote Desktop Services formerly known as Terminal Services when an authenticated attacker abuses clipboard redirection. An attacker who successfully exploited this vulnerability could execute arbitrary code on the victim system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-0655)

  • An elevation of privilege vulnerability exists when Windows Error Reporting manager improperly handles hard links. An attacker who successfully exploited this vulnerability could overwrite a targeted file leading to an elevated status. (CVE-2020-0678)

  • An elevation of privilege vulnerability exists in the way that the Windows Search Indexer handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2020-0666, CVE-2020-0667, CVE-2020-0735, CVE-2020-0752)

  • An information disclosure vulnerability exists when the Telephony Service improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise a users system. (CVE-2020-0698)

  • An elevation of privilege vulnerability exists when the Windows Graphics Component improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2020-0715, CVE-2020-0745)

  • A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.
    (CVE-2020-0673, CVE-2020-0674)

  • A remote code execution vulnerability exists when the Windows Imaging Library improperly handles memory.
    (CVE-2020-0708)

  • A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-0710, CVE-2020-0712, CVE-2020-0713, CVE-2020-0767)

  • An elevation of privilege vulnerability exists in the way that the sysmain.dll handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application. The security update addresses the vulnerability by ensuring the sysmain.dll properly handles objects in memory.
    (CVE-2020-0818)

#
# (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(133611);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/23");

  script_cve_id(
    "CVE-2020-0655",
    "CVE-2020-0657",
    "CVE-2020-0658",
    "CVE-2020-0659",
    "CVE-2020-0660",
    "CVE-2020-0661",
    "CVE-2020-0662",
    "CVE-2020-0665",
    "CVE-2020-0666",
    "CVE-2020-0667",
    "CVE-2020-0668",
    "CVE-2020-0670",
    "CVE-2020-0673",
    "CVE-2020-0674",
    "CVE-2020-0675",
    "CVE-2020-0676",
    "CVE-2020-0677",
    "CVE-2020-0678",
    "CVE-2020-0679",
    "CVE-2020-0680",
    "CVE-2020-0681",
    "CVE-2020-0682",
    "CVE-2020-0683",
    "CVE-2020-0686",
    "CVE-2020-0689",
    "CVE-2020-0691",
    "CVE-2020-0698",
    "CVE-2020-0703",
    "CVE-2020-0704",
    "CVE-2020-0705",
    "CVE-2020-0706",
    "CVE-2020-0707",
    "CVE-2020-0708",
    "CVE-2020-0709",
    "CVE-2020-0710",
    "CVE-2020-0712",
    "CVE-2020-0713",
    "CVE-2020-0715",
    "CVE-2020-0716",
    "CVE-2020-0719",
    "CVE-2020-0720",
    "CVE-2020-0721",
    "CVE-2020-0722",
    "CVE-2020-0723",
    "CVE-2020-0724",
    "CVE-2020-0725",
    "CVE-2020-0726",
    "CVE-2020-0727",
    "CVE-2020-0728",
    "CVE-2020-0729",
    "CVE-2020-0730",
    "CVE-2020-0731",
    "CVE-2020-0732",
    "CVE-2020-0734",
    "CVE-2020-0735",
    "CVE-2020-0737",
    "CVE-2020-0738",
    "CVE-2020-0739",
    "CVE-2020-0742",
    "CVE-2020-0743",
    "CVE-2020-0744",
    "CVE-2020-0745",
    "CVE-2020-0747",
    "CVE-2020-0748",
    "CVE-2020-0749",
    "CVE-2020-0750",
    "CVE-2020-0752",
    "CVE-2020-0753",
    "CVE-2020-0754",
    "CVE-2020-0755",
    "CVE-2020-0756",
    "CVE-2020-0767",
    "CVE-2020-0817",
    "CVE-2020-0818"
  );
  script_xref(name:"MSKB", value:"4537764");
  script_xref(name:"MSFT", value:"MS20-4537764");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
  script_xref(name:"CEA-ID", value:"CEA-2020-0019");
  script_xref(name:"CEA-ID", value:"CEA-2020-0010");

  script_name(english:"KB4537764: Windows 10 Version 1607 and Windows Server 2016 February 2020 Security Update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing security update 4537764. 
It is, therefore, affected by multiple vulnerabilities :

  - An elevation of privilege vulnerability exists when the
    Windows kernel fails to properly handle objects in
    memory. An attacker who successfully exploited this
    vulnerability could run arbitrary code in kernel mode.
    An attacker could then install programs; view, change,
    or delete data; or create new accounts with full user
    rights.  (CVE-2020-0670)

  - A remote code execution vulnerability exists in the
    Windows Remote Desktop Client when a user connects to a
    malicious server. An attacker who successfully exploited
    this vulnerability could execute arbitrary code on the
    computer of the connecting client. An attacker could
    then install programs; view, change, or delete data; or
    create new accounts with full user rights.
    (CVE-2020-0681, CVE-2020-0734, CVE-2020-0817)

  - A memory corruption vulnerability exists when Windows
    Media Foundation improperly handles objects in memory.
    An attacker who successfully exploited the vulnerability
    could install programs; view, change, or delete data; or
    create new accounts with full user rights. There are
    multiple ways an attacker could exploit the
    vulnerability, such as by convincing a user to open a
    specially crafted document, or by convincing a user to
    visit a malicious webpage. The security update addresses
    the vulnerability by correcting how Windows Media
    Foundation handles objects in memory. (CVE-2020-0738)

  - An information disclosure vulnerability exists in the
    way that affected Microsoft browsers handle cross-origin
    requests. An attacker who successfully exploited this
    vulnerability could determine the origin of all of the
    web pages in the affected browser.  (CVE-2020-0706)

  - An information disclosure vulnerability exists in the
    Windows Common Log File System (CLFS) driver when it
    fails to properly handle objects in memory. An attacker
    who successfully exploited this vulnerability could
    potentially read data that was not intended to be
    disclosed. Note that this vulnerability would not allow
    an attacker to execute code or to elevate their user
    rights directly, but it could be used to obtain
    information that could be used to try to further
    compromise the affected system.  (CVE-2020-0658)

  - An elevation of privilege vulnerability exists in the
    way that the tapisrv.dll handles objects in memory. An
    attacker who successfully exploited the vulnerability
    could execute code with elevated permissions.
    (CVE-2020-0737)

  - An elevation of privilege vulnerability exists in the
    way that the Windows Kernel handles objects in memory.
    An attacker who successfully exploited the vulnerability
    could execute code with elevated permissions.
    (CVE-2020-0668)

  - A security feature bypass vulnerability exists in secure
    boot. An attacker who successfully exploited the
    vulnerability can bypass secure boot and load untrusted
    software.  (CVE-2020-0689)

  - An elevation of privilege vulnerability exists in the
    way that the Connected Devices Platform Service handles
    objects in memory. An attacker who successfully
    exploited the vulnerability could execute code with
    elevated permissions.  (CVE-2020-0742, CVE-2020-0743,
    CVE-2020-0749, CVE-2020-0750)

  - An elevation of privilege vulnerability exists in the
    way that the dssvc.dll handles file creation allowing
    for a file overwrite or creation in a secured location.
    An attacker who successfully exploited the vulnerability
    could execute code with elevated permissions.
    (CVE-2020-0739)

  - An elevation of privilege vulnerability exists when the
    Windows Wireless Network Manager improperly handles
    memory.  (CVE-2020-0704)

  - An elevation of privilege vulnerability exists in
    Windows when the Windows kernel-mode driver fails to
    properly handle objects in memory. An attacker who
    successfully exploited this vulnerability could run
    arbitrary code in kernel mode. An attacker could then
    install programs; view, change, or delete data; or
    create new accounts with full user rights.
    (CVE-2020-0691)

  - An elevation of privilege vulnerability exists in Active
    Directory Forest trusts due to a default setting that
    lets an attacker in the trusting forest request
    delegation of a TGT for an identity from the trusted
    forest.  (CVE-2020-0665)

  - An elevation of privilege vulnerability exists in
    Windows Error Reporting (WER) when WER handles and
    executes files. The vulnerability could allow elevation
    of privilege if an attacker can successfully exploit it.
    An attacker who successfully exploited the vulnerability
    could gain greater access to sensitive information and
    system functionality.  (CVE-2020-0753, CVE-2020-0754)

  - An elevation of privilege vulnerability exists when the
    Windows Data Sharing Service improperly handles file
    operations. An attacker who successfully exploited this
    vulnerability could run processes in an elevated
    context. An attacker could exploit this vulnerability by
    running a specially crafted application on the victim
    system. The update addresses the vulnerability by
    correcting the way the Windows Data Sharing Service
    handles file operations. (CVE-2020-0659, CVE-2020-0747)

  - A denial of service vulnerability exists when Microsoft
    Hyper-V on a host server fails to properly validate
    input from a privileged user on a guest operating
    system.  (CVE-2020-0661)

  - An information disclosure vulnerability exists when the
    win32k component improperly provides kernel information.
    An attacker who successfully exploited the vulnerability
    could obtain information to further compromise the users
    system.  (CVE-2020-0716)

  - A remote code execution vulnerability exists in the way
    that Windows handles objects in memory. An attacker who
    successfully exploited the vulnerability could execute
    arbitrary code with elevated permissions on a target
    system.  (CVE-2020-0662)

  - An elevation of privilege vulnerability exists in the
    Windows Installer when MSI packages process symbolic
    links. An attacker who successfully exploited this
    vulnerability could bypass access restrictions to add or
    remove files.  (CVE-2020-0683, CVE-2020-0686)

  - An elevation of privilege vulnerability exists when the
    Windows Backup Service improperly handles file
    operations.  (CVE-2020-0703)

  - A remote code execution vulnerability exists in
    Microsoft Windows that could allow remote code execution
    if a .LNK file is processed. An attacker who
    successfully exploited this vulnerability could gain the
    same user rights as the local user.  (CVE-2020-0729)

  - An elevation of privilege vulnerability exists when the
    Windows IME improperly handles memory.  (CVE-2020-0707)

  - An elevation of privilege vulnerability exists when the
    Windows Common Log File System (CLFS) driver improperly
    handles objects in memory. An attacker who successfully
    exploited this vulnerability could run processes in an
    elevated context.  (CVE-2020-0657)

  - An elevation of privilege vulnerability exists in
    Windows when the Win32k component fails to properly
    handle objects in memory. An attacker who successfully
    exploited this vulnerability could run arbitrary code in
    kernel mode. An attacker could then install programs;
    view, change, or delete data; or create new accounts
    with full user rights.  (CVE-2020-0719, CVE-2020-0720,
    CVE-2020-0721, CVE-2020-0722, CVE-2020-0723,
    CVE-2020-0724, CVE-2020-0725, CVE-2020-0726,
    CVE-2020-0731)

  - An elevation of privilege vulnerability exists when the
    Connected User Experiences and Telemetry Service
    improperly handles file operations. An attacker who
    successfully exploited this vulnerability could gain
    elevated privileges on the victim system.
    (CVE-2020-0727)

  - An elevation of privilege vulnerability exists when the
    Windows User Profile Service (ProfSvc) improperly
    handles symlinks. An attacker who successfully exploited
    this vulnerability could delete files and folders in an
    elevated context.  (CVE-2020-0730)

  - An information vulnerability exists when Windows Modules
    Installer Service improperly discloses file information.
    Successful exploitation of the vulnerability could allow
    the attacker to read any file on the file system.
    (CVE-2020-0728)

  - An elevation of privilege vulnerability exists in the
    way that the Windows Function Discovery Service handles
    objects in memory. An attacker who successfully
    exploited the vulnerability could execute code with
    elevated permissions.  (CVE-2020-0679, CVE-2020-0680,
    CVE-2020-0682)

  - An information disclosure vulnerability exists when the
    Windows Network Driver Interface Specification (NDIS)
    improperly handles memory.  (CVE-2020-0705)

  - An information disclosure vulnerability exists in the
    Cryptography Next Generation (CNG) service when it fails
    to properly handle objects in memory.  (CVE-2020-0675,
    CVE-2020-0676, CVE-2020-0677, CVE-2020-0748,
    CVE-2020-0755, CVE-2020-0756)

  - A denial of service vulnerability exists in Remote
    Desktop Protocol (RDP) when an attacker connects to the
    target system using RDP and sends specially crafted
    requests. An attacker who successfully exploited this
    vulnerability could cause the RDP service on the target
    system to stop responding.  (CVE-2020-0660)

  - An information disclosure vulnerability exists in the
    way that the Windows Graphics Device Interface (GDI)
    handles objects in memory, allowing an attacker to
    retrieve information from a targeted system. By itself,
    the information disclosure does not allow arbitrary code
    execution; however, it could allow arbitrary code to be
    run if the attacker uses it in combination with another
    vulnerability.  (CVE-2020-0744)

  - An elevation of privilege vulnerability exists when
    DirectX improperly handles objects in memory. An
    attacker who successfully exploited this vulnerability
    could run arbitrary code in kernel mode. An attacker
    could then install programs; view, change, or delete
    data; or create new accounts with full user rights.
    (CVE-2020-0709, CVE-2020-0732)

  - A remote code execution vulnerability exists in Remote
    Desktop Services formerly known as Terminal Services
    when an authenticated attacker abuses clipboard
    redirection. An attacker who successfully exploited this
    vulnerability could execute arbitrary code on the victim
    system. An attacker could then install programs; view,
    change, or delete data; or create new accounts with full
    user rights.  (CVE-2020-0655)

  - An elevation of privilege vulnerability exists when
    Windows Error Reporting manager improperly handles hard
    links. An attacker who successfully exploited this
    vulnerability could overwrite a targeted file leading to
    an elevated status.  (CVE-2020-0678)

  - An elevation of privilege vulnerability exists in the
    way that the Windows Search Indexer handles objects in
    memory. An attacker who successfully exploited the
    vulnerability could execute code with elevated
    permissions.  (CVE-2020-0666, CVE-2020-0667,
    CVE-2020-0735, CVE-2020-0752)

  - An information disclosure vulnerability exists when the
    Telephony Service improperly discloses the contents of
    its memory. An attacker who successfully exploited the
    vulnerability could obtain information to further
    compromise a users system.  (CVE-2020-0698)

  - An elevation of privilege vulnerability exists when the
    Windows Graphics Component improperly handles objects in
    memory. An attacker who successfully exploited this
    vulnerability could run processes in an elevated
    context.  (CVE-2020-0715, CVE-2020-0745)

  - A remote code execution vulnerability exists in the way
    that the scripting engine handles objects in memory in
    Internet Explorer. The vulnerability could corrupt
    memory in such a way that an attacker could execute
    arbitrary code in the context of the current user. An
    attacker who successfully exploited the vulnerability
    could gain the same user rights as the current user.
    (CVE-2020-0673, CVE-2020-0674)

  - A remote code execution vulnerability exists when the
    Windows Imaging Library improperly handles memory.
    (CVE-2020-0708)

  - A remote code execution vulnerability exists in the way 
    that the ChakraCore scripting engine handles objects in 
    memory. The vulnerability could corrupt memory in such a 
    way that an attacker could execute arbitrary code in the 
    context of the current user. An attacker who successfully 
    exploited the vulnerability could gain the same user 
    rights as the current user. If the current user is logged 
    on with administrative user rights, an attacker who 
    successfully exploited the vulnerability could take 
    control of an affected system. An attacker could then 
    install programs; view, change, or delete data; or create 
    new accounts with full user rights. (CVE-2020-0710, 
    CVE-2020-0712, CVE-2020-0713, CVE-2020-0767)

  - An elevation of privilege vulnerability exists in the
    way that the sysmain.dll handles objects in memory. An
    attacker who successfully exploited the vulnerability
    could execute code with elevated permissions. To exploit
    the vulnerability, a locally authenticated attacker
    could run a specially crafted application. The security
    update addresses the vulnerability by ensuring the
    sysmain.dll properly handles objects in memory.
    (CVE-2020-0818)");
  # https://support.microsoft.com/en-us/help/4537764/windows-10-update-kb4537764
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6ed17ad3");
  script_set_attribute(attribute:"solution", value:
"Apply Cumulative Update KB4537764.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/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:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-0738");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Service Tracing Privilege Elevation Vulnerability');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/11");

  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:edge");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_check_rollup.nasl", "smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include("audit.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS20-02";
kbs = make_list('4537764');

if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit("SMB/Registry/Enumerated");
get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);

if (hotfix_check_sp_range(win10:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

if (
  smb_check_rollup(os:"10",
                   sp:0,
                   os_build:"14393",
                   rollup_date:"02_2020",
                   bulletin:bulletin,
                   rollup_kb_list:[4537764])
)
{
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}
VendorProductVersionCPE
microsoftwindowscpe:/o:microsoft:windows
microsoftedgecpe:/a:microsoft:edge

References

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.972 High

EPSS

Percentile

99.9%