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nessusThis script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS20_OCT_4580345.NASL
HistoryOct 13, 2020 - 12:00 a.m.

KB4580387: Windows 7 and Windows Server 2008 R2 October 2020 Security Update

2020-10-1300:00:00
This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
40

8.1 High

AI Score

Confidence

High

The remote Windows host is missing security update 4580387 or cumulative update 4580345. It is, therefore, affected by multiple vulnerabilities :

  • An elevation of privilege vulnerability exists when the Windows Application Compatibility Client Library improperly handles registry operations. An attacker who successfully exploited this vulnerability could gain elevated privileges. (CVE-2020-16920)

  • A denial of service vulnerability exists in Windows Remote Desktop Service 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 Remote Desktop Service on the target system to stop responding. (CVE-2020-16863)

  • An elevation of privilege vulnerability exists in the way that the Windows Network Connections Service handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. (CVE-2020-16887)

  • An elevation of privilege vulnerability exists when the Windows User Profile Service (ProfSvc) improperly handles junction points. An attacker who successfully exploited this vulnerability could delete files and folders in an elevated context. (CVE-2020-16940)

  • 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-2020-16923)

  • An information disclosure vulnerability exists in the way that the Windows Graphics Device Interface Plus (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-2020-16914)

  • An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker 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. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation. (CVE-2020-16902)

  • An elevation of privilege vulnerability exists when the Windows Backup Service improperly handles file operations. (CVE-2020-16912, CVE-2020-16936, CVE-2020-16972, CVE-2020-16973, CVE-2020-16974, CVE-2020-16975, CVE-2020-16976)

  • An elevation of privilege vulnerability exists when Windows improperly handles COM object creation. An attacker who successfully exploited the vulnerability could run arbitrary code with elevated privileges.
    (CVE-2020-16916, CVE-2020-16935)

  • An information disclosure vulnerability exists when the .NET Framework improperly handles objects in memory. An attacker who successfully exploited the vulnerability could disclose contents of an affected system’s memory.
    (CVE-2020-16937)

  • An information disclosure vulnerability exists when the Windows KernelStream improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2020-16889)

  • 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-2020-16922)

  • An elevation of privilege vulnerability exists when Group Policy improperly checks access. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2020-16939)

  • An elevation of privilege vulnerability exists when the Windows Event System improperly handles objects in memory. (CVE-2020-16900)

  • 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-2020-16924)

  • A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system. (CVE-2020-16891)

  • An information disclosure vulnerability exists when NetBIOS over TCP (NBT) Extensions (NetBT) improperly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2020-16897)

#
# (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(141431);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/15");

  script_cve_id(
    "CVE-2020-16863",
    "CVE-2020-16887",
    "CVE-2020-16889",
    "CVE-2020-16891",
    "CVE-2020-16897",
    "CVE-2020-16900",
    "CVE-2020-16902",
    "CVE-2020-16912",
    "CVE-2020-16914",
    "CVE-2020-16916",
    "CVE-2020-16920",
    "CVE-2020-16922",
    "CVE-2020-16923",
    "CVE-2020-16924",
    "CVE-2020-16935",
    "CVE-2020-16936",
    "CVE-2020-16937",
    "CVE-2020-16939",
    "CVE-2020-16940",
    "CVE-2020-16972",
    "CVE-2020-16973",
    "CVE-2020-16974",
    "CVE-2020-16975",
    "CVE-2020-16976"
  );
  script_xref(name:"MSKB", value:"4580387");
  script_xref(name:"MSKB", value:"4580345");
  script_xref(name:"MSFT", value:"MS20-4580387");
  script_xref(name:"MSFT", value:"MS20-4580345");
  script_xref(name:"IAVA", value:"2020-A-0458-S");
  script_xref(name:"CEA-ID", value:"CEA-2020-0126");

  script_name(english:"KB4580387: Windows 7 and Windows Server 2008 R2 October 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 4580387
or cumulative update 4580345. It is, therefore, affected by
multiple vulnerabilities :

  - An elevation of privilege vulnerability exists when the
    Windows Application Compatibility Client Library
    improperly handles registry operations. An attacker who
    successfully exploited this vulnerability could gain
    elevated privileges.  (CVE-2020-16920)

  - A denial of service vulnerability exists in Windows
    Remote Desktop Service 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 Remote Desktop Service on
    the target system to stop responding.  (CVE-2020-16863)

  - An elevation of privilege vulnerability exists in the
    way that the Windows Network Connections Service handles
    objects in memory. An attacker who successfully
    exploited the vulnerability could execute code with
    elevated permissions.  (CVE-2020-16887)

  - An elevation of privilege vulnerability exists when the
    Windows User Profile Service (ProfSvc) improperly
    handles junction points. An attacker who successfully
    exploited this vulnerability could delete files and
    folders in an elevated context.  (CVE-2020-16940)

  - 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-2020-16923)

  - An information disclosure vulnerability exists in the
    way that the Windows Graphics Device Interface Plus
    (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-2020-16914)

  - An elevation of privilege vulnerability exists in the
    Windows Installer when the Windows Installer fails to
    properly sanitize input leading to an insecure library
    loading behavior. A locally authenticated attacker 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. The security update addresses the vulnerability
    by correcting the input sanitization error to preclude
    unintended elevation. (CVE-2020-16902)

  - An elevation of privilege vulnerability exists when the
    Windows Backup Service improperly handles file
    operations.  (CVE-2020-16912, CVE-2020-16936,
    CVE-2020-16972, CVE-2020-16973, CVE-2020-16974,
    CVE-2020-16975, CVE-2020-16976)

  - An elevation of privilege vulnerability exists when
    Windows improperly handles COM object creation. An
    attacker who successfully exploited the vulnerability
    could run arbitrary code with elevated privileges.
    (CVE-2020-16916, CVE-2020-16935)

  - An information disclosure vulnerability exists when the
    .NET Framework improperly handles objects in memory. An
    attacker who successfully exploited the vulnerability
    could disclose contents of an affected system's memory.
    (CVE-2020-16937)

  - An information disclosure vulnerability exists when the
    Windows KernelStream improperly handles objects in
    memory. An attacker who successfully exploited this
    vulnerability could obtain information to further
    compromise the users system.  (CVE-2020-16889)

  - 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-2020-16922)

  - An elevation of privilege vulnerability exists when
    Group Policy improperly checks access. An attacker who
    successfully exploited this vulnerability could run
    processes in an elevated context.  (CVE-2020-16939)

  - An elevation of privilege vulnerability exists when the
    Windows Event System improperly handles objects in
    memory.  (CVE-2020-16900)

  - 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-2020-16924)

  - A remote code execution vulnerability exists when
    Windows Hyper-V on a host server fails to properly
    validate input from an authenticated user on a guest
    operating system.  (CVE-2020-16891)

  - An information disclosure vulnerability exists when
    NetBIOS over TCP (NBT) Extensions (NetBT) improperly
    handle objects in memory. An attacker who successfully
    exploited this vulnerability could obtain information to
    further compromise the users system.  (CVE-2020-16897)");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4580387/windows-7-update");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4580345/windows-7-update");
  script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB4580387 or Cumulative Update KB4580345.");
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-16924");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-16891");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/13");

  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) 2020-2024 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 = 'MS20-10';
kbs = make_list(
  '4580345',
  '4580387'
);

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(win7:'1') <= 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:'6.1', 
                   sp:1,
                   rollup_date:'10_2020',
                   bulletin:bulletin,
                   rollup_kb_list:[4580345, 4580387])
)
{
  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());
}
VendorProductVersion
microsoftwindows

References

8.1 High

AI Score

Confidence

High

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