KB4571741: Windows 10 Version 1709 August 2020 Security Update

2020-08-11T00:00:00
ID SMB_NT_MS20_AUG_4571741.NASL
Type nessus
Reporter This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2021-09-17T00:00:00

Description

The remote Windows host is missing security update 4571741. It is, therefore, affected by multiple vulnerabilities :

  • 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-2020-1379, CVE-2020-1477, CVE-2020-1478, CVE-2020-1492, CVE-2020-1525, CVE-2020-1554)

  • An elevation of privilege vulnerability exists in the way that the Windows WalletService handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2020-1533, CVE-2020-1556)

  • An elevation of privilege vulnerability exists when Connected User Experiences and Telemetry 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 security update addresses the vulnerability by correcting how the Connected User Experiences and Telemetry Service handles file operations. (CVE-2020-1511)

  • A remote code execution vulnerability exists when Windows Media Audio Codec improperly handles objects. An attacker who successfully exploited the vulnerability could take control of an affected system. 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 Audio Codec handles objects. (CVE-2020-1339)

  • An elevation of privilege vulnerability exists when the Windows Work Folder 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 Work Folder Service handles file operations. (CVE-2020-1552)

  • An elevation of privilege vulnerability exists when the Windows CDP User Components improperly handle memory. (CVE-2020-1549, CVE-2020-1550)

  • An information disclosure vulnerability exists when DirectWrite improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. 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 an untrusted webpage. The security update addresses the vulnerability by correcting how DirectWrite handles objects in memory. (CVE-2020-1577)

  • An elevation of privilege vulnerability exists when the Windows Radio Manager API improperly handles memory. (CVE-2020-1528)

  • An information disclosure vulnerability exists in RPC if the server has Routing and Remote Access enabled. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system (CVE-2020-1383)

  • A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge (HTML-based). 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-2020-1555)

  • An elevation of privilege vulnerability exists when the Windows Work Folders Service improperly handles memory. (CVE-2020-1470, CVE-2020-1484, CVE-2020-1516)

  • An elevation of privilege vulnerability exists when the Windows Custom Protocol Engine improperly handles memory. (CVE-2020-1527)

  • An elevation of privilege vulnerability exists when the Storage Service improperly handles file operations. An attacker who successfully exploited this vulnerability could gain elevated privileges on the victim system. (CVE-2020-1490)

  • An elevation of privilege vulnerability exists in the way that the Windows Graphics Device Interface (GDI) 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-2020-1480, CVE-2020-1529)

  • An elevation of privilege vulnerability exists when the Windows Speech Runtime improperly handles memory. (CVE-2020-1521, CVE-2020-1522)

  • An elevation of privilege vulnerability exists when the Windows CSC Service improperly handles memory. (CVE-2020-1489, CVE-2020-1513)

  • An elevation of privilege vulnerability exists when the Windows Accounts Control improperly handles memory. (CVE-2020-1531)

  • An elevation of privilege vulnerability exists in the Local Security Authority Subsystem Service (LSASS) when an authenticated attacker sends a specially crafted authentication request. A remote attacker who successfully exploited this vulnerability could cause an elevation of privilege on the target system's LSASS service. The security update addresses the vulnerability by changing the way that LSASS handles specially crafted authentication requests. (CVE-2020-1509)

  • A remote code execution vulnerability exists when the Windows Font Driver Host improperly handles memory. An attacker who successfully exploited the vulnerability would gain execution on a victim system. The security update addresses the vulnerability by correcting how the Windows Font Driver Host handles memory. (CVE-2020-1520)

  • An elevation of privilege vulnerability exists when the Windows UPnP Device Host improperly handles memory. (CVE-2020-1519, CVE-2020-1538)

  • 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-2020-1380, CVE-2020-1570)

  • An elevation of privilege vulnerability exists when the Windows Telephony Server improperly handles memory. (CVE-2020-1515)

  • An information disclosure vulnerability exists when Media Foundation improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2020-1487)

  • An elevation of privilege vulnerability exists when the Windows AppX Deployment Extensions improperly performs privilege management, resulting in access to system files. (CVE-2020-1488)

  • An elevation of privilege vulnerability exists when the Windows Runtime improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code 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 Runtime handles objects in memory. (CVE-2020-1553)

  • An elevation of privilege vulnerability exists in the way that the dnsrslvr.dll handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2020-1584)

  • An elevation of privilege vulnerability exists when the Windows Network Connection Broker improperly handles memory. (CVE-2020-1526)

  • An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files. (CVE-2020-1476)

  • An elevation of privilege vulnerability exists when the Windows Remote Access improperly handles file operations. An attacker who successfully exploited this vulnerability could gain elevated privileges. (CVE-2020-1537)

  • An elevation of privilege vulnerability exists when the "Public Account Pictures" folder improperly handles junctions. (CVE-2020-1565)

  • An elevation of privilege vulnerability exists when the Windows Backup Service improperly handles file operations. (CVE-2020-1534)

  • A remote code execution vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. The vulnerability could corrupt memory in such a way that enables an attacker to 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 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-2020-1568)

  • An elevation of privilege vulnerability exists when the Windows Kernel API improperly handles registry objects in memory. An attacker who successfully exploited the vulnerability could gain elevated privileges on a targeted system. A locally authenticated attacker could exploit this vulnerability by running a specially crafted application. The security update addresses the vulnerability by helping to ensure that the Windows Kernel API properly handles objects in memory. (CVE-2020-1377, CVE-2020-1378)

  • An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly allows arbitrary writing to the file system. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-1337)

  • An information disclosure vulnerability exists when the Windows Image Acquisition (WIA) Service improperly discloses contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2020-1474, CVE-2020-1485)

  • 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-2020-1417, CVE-2020-1486, CVE-2020-1566)

  • A remote code execution vulnerability exists when the Windows Jet Database Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system. An attacker could exploit this vulnerability by enticing a victim to open a specially crafted file. The update addresses the vulnerability by correcting the way the Windows Jet Database Engine handles objects in memory. (CVE-2020-1473, CVE-2020-1557, CVE-2020-1558, CVE-2020-1564)

  • A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system. (CVE-2020-1046)

  • 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-2020-1510)

  • An elevation of privilege vulnerability exists when the Windows Backup Engine improperly handles memory. (CVE-2020-1535, CVE-2020-1536, CVE-2020-1539, CVE-2020-1540, CVE-2020-1541, CVE-2020-1542, CVE-2020-1543, CVE-2020-1544, CVE-2020-1545, CVE-2020-1546, CVE-2020-1547, CVE-2020-1551)

  • 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-2020-1479)

  • An elevation of privilege vulnerability exists when the Windows Ancillary Function Driver for WinSock improperly handles memory. (CVE-2020-1587)

  • An elevation of privilege vulnerability exists when the Windows Function Discovery SSDP Provider improperly handles memory. (CVE-2020-1579)

  • A remote code execution vulnerability exists in the way that Microsoft Graphics Components handle objects in memory. An attacker who successfully exploited the vulnerability could execute arbitrary code on a target system. (CVE-2020-1561, CVE-2020-1562)

  • An information disclosure vulnerability exists when the Windows State Repository Service improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. 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 State Repository Service handles objects in memory. (CVE-2020-1512)

  • An elevation of privilege vulnerability exists when Windows Remote Access improperly handles memory. (CVE-2020-1530)

  • A remote code execution vulnerability exists in the way that the MSHTML engine improperly validates input. An attacker could execute arbitrary code in the context of the current user. (CVE-2020-1567)

  • A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files. In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded. The update addresses the vulnerability by correcting how Windows validates file signatures. (CVE-2020-1464)

                                        
                                            #
# (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(139494);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/09/17");

  script_cve_id(
    "CVE-2020-1046",
    "CVE-2020-1337",
    "CVE-2020-1339",
    "CVE-2020-1377",
    "CVE-2020-1378",
    "CVE-2020-1379",
    "CVE-2020-1380",
    "CVE-2020-1383",
    "CVE-2020-1417",
    "CVE-2020-1464",
    "CVE-2020-1470",
    "CVE-2020-1473",
    "CVE-2020-1474",
    "CVE-2020-1476",
    "CVE-2020-1477",
    "CVE-2020-1478",
    "CVE-2020-1479",
    "CVE-2020-1480",
    "CVE-2020-1484",
    "CVE-2020-1485",
    "CVE-2020-1486",
    "CVE-2020-1487",
    "CVE-2020-1488",
    "CVE-2020-1489",
    "CVE-2020-1490",
    "CVE-2020-1492",
    "CVE-2020-1509",
    "CVE-2020-1510",
    "CVE-2020-1511",
    "CVE-2020-1512",
    "CVE-2020-1513",
    "CVE-2020-1515",
    "CVE-2020-1516",
    "CVE-2020-1519",
    "CVE-2020-1520",
    "CVE-2020-1521",
    "CVE-2020-1522",
    "CVE-2020-1525",
    "CVE-2020-1526",
    "CVE-2020-1527",
    "CVE-2020-1528",
    "CVE-2020-1529",
    "CVE-2020-1530",
    "CVE-2020-1531",
    "CVE-2020-1533",
    "CVE-2020-1534",
    "CVE-2020-1535",
    "CVE-2020-1536",
    "CVE-2020-1537",
    "CVE-2020-1538",
    "CVE-2020-1539",
    "CVE-2020-1540",
    "CVE-2020-1541",
    "CVE-2020-1542",
    "CVE-2020-1543",
    "CVE-2020-1544",
    "CVE-2020-1545",
    "CVE-2020-1546",
    "CVE-2020-1547",
    "CVE-2020-1549",
    "CVE-2020-1550",
    "CVE-2020-1551",
    "CVE-2020-1552",
    "CVE-2020-1553",
    "CVE-2020-1554",
    "CVE-2020-1555",
    "CVE-2020-1556",
    "CVE-2020-1557",
    "CVE-2020-1558",
    "CVE-2020-1561",
    "CVE-2020-1562",
    "CVE-2020-1564",
    "CVE-2020-1565",
    "CVE-2020-1566",
    "CVE-2020-1567",
    "CVE-2020-1568",
    "CVE-2020-1570",
    "CVE-2020-1577",
    "CVE-2020-1579",
    "CVE-2020-1584",
    "CVE-2020-1587"
  );
  script_xref(name:"MSKB", value:"4571741");
  script_xref(name:"MSFT", value:"MS20-4571741");
  script_xref(name:"IAVA", value:"2020-A-0361-S");
  script_xref(name:"IAVA", value:"2020-A-0367-S");
  script_xref(name:"IAVA", value:"2020-A-0370-S");
  script_xref(name:"IAVA", value:"2021-A-0431");
  script_xref(name:"IAVA", value:"2021-A-0429");

  script_name(english:"KB4571741: Windows 10 Version 1709 August 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 4571741.
It is, therefore, affected by multiple vulnerabilities :

  - 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-2020-1379,
    CVE-2020-1477, CVE-2020-1478, CVE-2020-1492,
    CVE-2020-1525, CVE-2020-1554)

  - An elevation of privilege vulnerability exists in the
    way that the Windows WalletService handles objects in
    memory. An attacker who successfully exploited the
    vulnerability could execute code with elevated
    permissions.  (CVE-2020-1533, CVE-2020-1556)

  - An elevation of privilege vulnerability exists when
    Connected User Experiences and Telemetry 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 security
    update addresses the vulnerability by correcting how the
    Connected User Experiences and Telemetry Service handles
    file operations. (CVE-2020-1511)

  - A remote code execution vulnerability exists when
    Windows Media Audio Codec improperly handles objects. An
    attacker who successfully exploited the vulnerability
    could take control of an affected system. 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 Audio
    Codec handles objects. (CVE-2020-1339)

  - An elevation of privilege vulnerability exists when the
    Windows Work Folder 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 Work Folder Service
    handles file operations. (CVE-2020-1552)

  - An elevation of privilege vulnerability exists when the
    Windows CDP User Components improperly handle memory.
    (CVE-2020-1549, CVE-2020-1550)

  - An information disclosure vulnerability exists when
    DirectWrite improperly discloses the contents of its
    memory. An attacker who successfully exploited the
    vulnerability could obtain information to further
    compromise the users system. 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 an untrusted webpage.
    The security update addresses the vulnerability by
    correcting how DirectWrite handles objects in memory.
    (CVE-2020-1577)

  - An elevation of privilege vulnerability exists when the
    Windows Radio Manager API improperly handles memory.
    (CVE-2020-1528)

  - An information disclosure vulnerability exists in RPC if
    the server has Routing and Remote Access enabled. An
    attacker who successfully exploited this vulnerability
    could obtain information to further compromise the users
    system  (CVE-2020-1383)

  - A remote code execution vulnerability exists in the way
    that the scripting engine handles objects in memory in
    Microsoft Edge (HTML-based). 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-2020-1555)

  - An elevation of privilege vulnerability exists when the
    Windows Work Folders Service improperly handles memory.
    (CVE-2020-1470, CVE-2020-1484, CVE-2020-1516)

  - An elevation of privilege vulnerability exists when the
    Windows Custom Protocol Engine improperly handles
    memory.  (CVE-2020-1527)

  - An elevation of privilege vulnerability exists when the
    Storage Service improperly handles file operations. An
    attacker who successfully exploited this vulnerability
    could gain elevated privileges on the victim system.
    (CVE-2020-1490)

  - An elevation of privilege vulnerability exists in the
    way that the Windows Graphics Device Interface (GDI)
    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-2020-1480, CVE-2020-1529)

  - An elevation of privilege vulnerability exists when the
    Windows Speech Runtime improperly handles memory.
    (CVE-2020-1521, CVE-2020-1522)

  - An elevation of privilege vulnerability exists when the
    Windows CSC Service improperly handles memory.
    (CVE-2020-1489, CVE-2020-1513)

  - An elevation of privilege vulnerability exists when the
    Windows Accounts Control improperly handles memory.
    (CVE-2020-1531)

  - An elevation of privilege vulnerability exists in the
    Local Security Authority Subsystem Service (LSASS) when
    an authenticated attacker sends a specially crafted
    authentication request. A remote attacker who
    successfully exploited this vulnerability could cause an
    elevation of privilege on the target system's LSASS
    service. The security update addresses the vulnerability
    by changing the way that LSASS handles specially crafted
    authentication requests. (CVE-2020-1509)

  - A remote code execution vulnerability exists when the
    Windows Font Driver Host improperly handles memory. An
    attacker who successfully exploited the vulnerability
    would gain execution on a victim system. The security
    update addresses the vulnerability by correcting how the
    Windows Font Driver Host handles memory. (CVE-2020-1520)

  - An elevation of privilege vulnerability exists when the
    Windows UPnP Device Host improperly handles memory.
    (CVE-2020-1519, CVE-2020-1538)

  - 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-2020-1380, CVE-2020-1570)

  - An elevation of privilege vulnerability exists when the
    Windows Telephony Server improperly handles memory.
    (CVE-2020-1515)

  - An information disclosure vulnerability exists when
    Media Foundation improperly handles objects in memory.
    An attacker who successfully exploited this
    vulnerability could obtain information to further
    compromise the users system.  (CVE-2020-1487)

  - An elevation of privilege vulnerability exists when the
    Windows AppX Deployment Extensions improperly performs
    privilege management, resulting in access to system
    files.  (CVE-2020-1488)

  - An elevation of privilege vulnerability exists when the
    Windows Runtime improperly handles objects in memory. An
    attacker who successfully exploited this vulnerability
    could run arbitrary code 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 Runtime handles objects in memory.
    (CVE-2020-1553)

  - An elevation of privilege vulnerability exists in the
    way that the dnsrslvr.dll handles objects in memory. An
    attacker who successfully exploited the vulnerability
    could execute code with elevated permissions.
    (CVE-2020-1584)

  - An elevation of privilege vulnerability exists when the
    Windows Network Connection Broker improperly handles
    memory.  (CVE-2020-1526)

  - An elevation of privilege vulnerability exists when
    ASP.NET or .NET web applications running on IIS
    improperly allow access to cached files. An attacker who
    successfully exploited this vulnerability could gain
    access to restricted files.  (CVE-2020-1476)

  - An elevation of privilege vulnerability exists when the
    Windows Remote Access improperly handles file
    operations. An attacker who successfully exploited this
    vulnerability could gain elevated privileges.
    (CVE-2020-1537)

  - An elevation of privilege vulnerability exists when the
    "Public Account Pictures" folder improperly
    handles junctions.  (CVE-2020-1565)

  - An elevation of privilege vulnerability exists when the
    Windows Backup Service improperly handles file
    operations.  (CVE-2020-1534)

  - A remote code execution vulnerability exists when
    Microsoft Edge PDF Reader improperly handles objects in
    memory. The vulnerability could corrupt memory in such a
    way that enables an attacker to 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 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-2020-1568)

  - An elevation of privilege vulnerability exists when the
    Windows Kernel API improperly handles registry objects
    in memory. An attacker who successfully exploited the
    vulnerability could gain elevated privileges on a
    targeted system. A locally authenticated attacker could
    exploit this vulnerability by running a specially
    crafted application. The security update addresses the
    vulnerability by helping to ensure that the Windows
    Kernel API properly handles objects in memory.
    (CVE-2020-1377, CVE-2020-1378)

  - An elevation of privilege vulnerability exists when the
    Windows Print Spooler service improperly allows
    arbitrary writing to the file system. An attacker who
    successfully exploited this vulnerability could run
    arbitrary code with elevated system privileges. An
    attacker could then install programs; view, change, or
    delete data; or create new accounts with full user
    rights.  (CVE-2020-1337)

  - An information disclosure vulnerability exists when the
    Windows Image Acquisition (WIA) Service improperly
    discloses contents of its memory. An attacker who
    successfully exploited the vulnerability could obtain
    information to further compromise the users system.
    (CVE-2020-1474, CVE-2020-1485)

  - 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-2020-1417, CVE-2020-1486, CVE-2020-1566)

  - A remote code execution vulnerability exists when the
    Windows Jet Database Engine improperly handles objects
    in memory. An attacker who successfully exploited this
    vulnerability could execute arbitrary code on a victim
    system. An attacker could exploit this vulnerability by
    enticing a victim to open a specially crafted file. The
    update addresses the vulnerability by correcting the way
    the Windows Jet Database Engine handles objects in
    memory. (CVE-2020-1473, CVE-2020-1557, CVE-2020-1558,
    CVE-2020-1564)

  - A remote code execution vulnerability exists when
    Microsoft .NET Framework processes input. An attacker
    who successfully exploited this vulnerability could take
    control of an affected system.  (CVE-2020-1046)

  - 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-2020-1510)

  - An elevation of privilege vulnerability exists when the
    Windows Backup Engine improperly handles memory.
    (CVE-2020-1535, CVE-2020-1536, CVE-2020-1539,
    CVE-2020-1540, CVE-2020-1541, CVE-2020-1542,
    CVE-2020-1543, CVE-2020-1544, CVE-2020-1545,
    CVE-2020-1546, CVE-2020-1547, CVE-2020-1551)

  - 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-2020-1479)

  - An elevation of privilege vulnerability exists when the
    Windows Ancillary Function Driver for WinSock improperly
    handles memory.  (CVE-2020-1587)

  - An elevation of privilege vulnerability exists when the
    Windows Function Discovery SSDP Provider improperly
    handles memory.  (CVE-2020-1579)

  - A remote code execution vulnerability exists in the way
    that Microsoft Graphics Components handle objects in
    memory. An attacker who successfully exploited the
    vulnerability could execute arbitrary code on a target
    system.  (CVE-2020-1561, CVE-2020-1562)

  - An information disclosure vulnerability exists when the
    Windows State Repository Service improperly handles
    objects in memory. An attacker who successfully
    exploited this vulnerability could obtain information to
    further compromise the users system. 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 State Repository Service handles objects in
    memory. (CVE-2020-1512)

  - An elevation of privilege vulnerability exists when
    Windows Remote Access improperly handles memory.
    (CVE-2020-1530)

  - A remote code execution vulnerability exists in the way
    that the MSHTML engine improperly validates input. An
    attacker could execute arbitrary code in the context of
    the current user.  (CVE-2020-1567)

  - A spoofing vulnerability exists when Windows incorrectly
    validates file signatures. An attacker who successfully
    exploited this vulnerability could bypass security
    features and load improperly signed files. In an attack
    scenario, an attacker could bypass security features
    intended to prevent improperly signed files from being
    loaded. The update addresses the vulnerability by
    correcting how Windows validates file signatures.
    (CVE-2020-1464)");
  # https://support.microsoft.com/en-us/help/4571741/windows-10-update-kb4571741
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9371bc74");
  script_set_attribute(attribute:"solution", value:
"Apply Cumulative Update KB4571741.");
  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:L/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-2020-1564");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Microsoft Spooler Local Privilege Elevation Vulnerability');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/08/11");

  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_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) 2020-2021 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('smb_func.inc');
include('smb_hotfixes.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_reg_query.inc');
include('install_func.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS20-08';
kbs = make_list(
  '4571741'
);

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:'16299',
                   rollup_date:'08_2020',
                   bulletin:bulletin,
                   rollup_kb_list:[4571741])
)
{
  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());
}