KB4556853: Windows 8.1 and Windows Server 2012 R2 May 2020 Security Update - Nessus
High Plugin ID: 136509This page contains detailed information about the KB4556853: Windows 8.1 and Windows Server 2012 R2 May 2020 Security Update Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.
Plugin Overview
ID: 136509
Name: KB4556853: Windows 8.1 and Windows Server 2012 R2 May 2020 Security Update
Filename: smb_nt_ms20_may_4556846.nasl
Vulnerability Published: 2020-05-12
This Plugin Published: 2020-05-12
Last Modification Time: 2021-11-30
Plugin Version: 1.11
Plugin Type: local
Plugin Family: Windows : Microsoft Bulletins
Dependencies:
ms_bulletin_checks_possible.nasl, smb_check_rollup.nasl, smb_hotfixes.nasl
Required KB Items [?]: SMB/MS_Bulletin_Checks/Possible
Vulnerability Information
Severity: High
Vulnerability Published: 2020-05-12
Patch Published: 2020-05-12
CVE [?]: CVE-2020-0909, CVE-2020-0963, CVE-2020-1010, CVE-2020-1035, CVE-2020-1048, CVE-2020-1051, CVE-2020-1054, CVE-2020-1058, CVE-2020-1060, CVE-2020-1061, CVE-2020-1062, CVE-2020-1064, CVE-2020-1067, CVE-2020-1070, CVE-2020-1071, CVE-2020-1072, CVE-2020-1076, CVE-2020-1078, CVE-2020-1079, CVE-2020-1081, CVE-2020-1092, CVE-2020-1093, CVE-2020-1108, CVE-2020-1112, CVE-2020-1113, CVE-2020-1114, CVE-2020-1116, CVE-2020-1136, CVE-2020-1141, CVE-2020-1143, CVE-2020-1149, CVE-2020-1153, CVE-2020-1154, CVE-2020-1174, CVE-2020-1175, CVE-2020-1176, CVE-2020-1179
CPE [?]: cpe:/o:microsoft:windows
Exploited by Malware: True
Synopsis
The remote Windows host is affected by multiple vulnerabilities.
Description
The remote Windows host is missing security update 4556853 or cumulative update 4556846. It is, therefore, affected by multiple vulnerabilities :
- A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests. (CVE-2020-1108)
- 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-2020-1141)
- A denial of service vulnerability exists when Hyper-V on a Windows Server fails to properly handle specially crafted network packets. (CVE-2020-0909)
- An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2020-1072)
- An information disclosure vulnerability exists when the Windows Client Server Run-Time Subsystem (CSRSS) fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2020-1116)
- 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-2020-1048, CVE-2020-1070)
- A denial of service vulnerability exists when Windows improperly handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. (CVE-2020-1076)
- 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-2020-1051, CVE-2020-1174, CVE-2020-1175, CVE-2020-1176)
- An elevation of privilege vulnerability exists when the Windows fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-1079)
- An elevation of privilege vulnerability exists in Windows Block Level Backup Engine Service (wbengine) that allows file deletion in arbitrary locations. (CVE-2020-1010)
- An information disclosure vulnerability exists when the Windows GDI component 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 the Windows GDI component handles objects in memory. (CVE-2020-0963, CVE-2020-1179)
- A remote code execution vulnerability exists when Internet Explorer improperly accesses 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. (CVE-2020-1062, CVE-2020-1092)
- An elevation of privilege vulnerability exists in Windows Installer because of the way Windows Installer handles certain filesystem operations. (CVE-2020-1078)
- 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-2020-1064)
- 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-2020-1153)
- 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-2020-1054, CVE-2020-1143)
- 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-2020-1136)
- 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-2020-1067)
- A security feature bypass vulnerability exists in Microsoft Windows when the Task Scheduler service fails to properly verify client connections over RPC. An attacker who successfully exploited this vulnerability could run arbitrary code as an administrator. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-1113)
- An elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) IIS module improperly handles uploaded content. An attacker who successfully exploited this vulnerability could upload restricted file types to an IIS-hosted folder. (CVE-2020-1112)
- An elevation of privilege vulnerability exists when the Windows Printer Service improperly validates file paths while loading printer drivers. An authenticated attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. (CVE-2020-1081)
- A remote code execution vulnerability exists in the way that the Microsoft Script Runtime 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. (CVE-2020-1061)
- An elevation of privilege vulnerability exists when Windows improperly handles errors tied to Remote Access Common Dialog. An attacker who successfully exploited the vulnerability could run arbitrary code with elevated privileges. (CVE-2020-1071)
- 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-2020-1149)
- 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-2020-1114)
- 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-2020-1154)
- A remote code execution vulnerability exists in the way that the VBScript 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. (CVE-2020-1035, CVE-2020-1058, CVE-2020-1060, CVE-2020-1093)
Solution
Apply Security Only update KB4556853 or Cumulative Update KB4556846.
Public Exploits
Target Network Port(s): 139, 445
Target Asset(s): Host/patch_management_checks
Exploit Available: True (Metasploit Framework, GitHub)
Exploit Ease: Exploits are available
Here's the list of publicly known exploits and PoCs for verifying the KB4556853: Windows 8.1 and Windows Server 2012 R2 May 2020 Security Update vulnerability:
- Metasploit: exploit/windows/local/cve_2020_1048_printerdemon
[Microsoft Spooler Local Privilege Elevation Vulnerability] - Metasploit: exploit/windows/local/cve_2020_1337_printerdemon
[Microsoft Spooler Local Privilege Elevation Vulnerability] - Metasploit: exploit/windows/local/cve_2020_1054_drawiconex_lpe
[Microsoft Windows DrawIconEx OOB Write Local Privilege Elevation] - GitHub: https://github.com/BC-SECURITY/Invoke-PrintDemon
[CVE-2020-1048] - GitHub: https://github.com/Karneades/awesome-vulnerabilities
[CVE-2020-1048] - GitHub: https://github.com/Moj0krr/PrinterDemon
[CVE-2020-1048] - GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
[CVE-2020-1048] - GitHub: https://github.com/SafeBreach-Labs/Spooler
[CVE-2020-1048] - GitHub: https://github.com/airbus-cert/Splunk-ETW
[CVE-2020-1048] - GitHub: https://github.com/bhassani/Recent-CVE
[CVE-2020-1048] - GitHub: https://github.com/deadjakk/patch-checker
[CVE-2020-1048] - GitHub: https://github.com/ionescu007/PrintDemon
[CVE-2020-1048] - GitHub: https://github.com/math1as/CVE-2020-1337-exploit
[CVE-2020-1048] - GitHub: https://github.com/thalpius/Microsoft-PrintDemon-Vulnerability
[CVE-2020-1048] - GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2020-1048] - GitHub: https://github.com/0xpetros/windows-privilage-escalation
[CVE-2020-1054] - GitHub: https://github.com/Al1ex/WindowsElevation
[CVE-2020-1054] - GitHub: https://github.com/Ascotbe/Kernelhub
[CVE-2020-1054] - GitHub: https://github.com/FULLSHADE/WindowsExploitationResources
[CVE-2020-1054] - GitHub: https://github.com/Iamgublin/CVE-2020-1054
[CVE-2020-1054] - GitHub: https://github.com/KaLendsi/CVE-2020-1054
[CVE-2020-1054] - GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
[CVE-2020-1054] - GitHub: https://github.com/NullArray/WinKernel-Resources
[CVE-2020-1054] - GitHub: https://github.com/SexyBeast233/SecBooks
[CVE-2020-1054] - GitHub: https://github.com/TamilHackz/windows-exploitation
[CVE-2020-1054] - GitHub: https://github.com/ycdxsb/Exploits
[CVE-2020-1054] - GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2020-1054] - GitHub: https://github.com/Accenture/AARO-Bugs
[CVE-2020-1062] - GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2020-1070] - GitHub: https://github.com/bodik/awesome-potatoes
[CVE-2020-1113] - GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2020-1143] - GitHub: https://github.com/Ken-Abruzzi/CVE-2020-1048
[CVE-2020-1048: An elevation of privilege vulnerability exists when the Windows Print Spooler ...] - GitHub: https://github.com/neofito/CVE-2020-1337
[CVE-2020-1048: CVE-2020-1048 bypass: binary planting PoC] - GitHub: https://github.com/shubham0d/CVE-2020-1048
[CVE-2020-1048: POC exploit code for CVE-2020-1048(PrintDemon)] - GitHub: https://github.com/VoidSec/CVE-2020-1337
[CVE-2020-1048: CVE-2020-1337 a bypass of (PrintDemon) CVE-2020-1048’s patch] - GitHub: https://github.com/zveriu/CVE-2009-0229-PoC
[CVE-2020-1048: PoC for CVE-2009-0229 "Print Spooler Read File Vulnerability" LPE AFR (related to ...] - GitHub: https://github.com/0xeb-bp/cve-2020-1054
[CVE-2020-1054: LPE for CVE-2020-1054 targeting Windows 7 x64] - GitHub: https://github.com/Graham382/CVE-2020-1054
[CVE-2020-1054: Windows 7 LPE]
Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.
WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.
Risk Information
CVSS Score Source [?]: CVE-2020-1176
CVSS V2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C
CVSS Base Score: | 9.3 (High) |
Impact Subscore: | 10.0 |
Exploitability Subscore: | 8.6 |
CVSS Temporal Score: | 8.1 (High) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 8.1 (High) |
CVSS Base Score: | 7.8 (High) |
Impact Subscore: | 5.9 |
Exploitability Subscore: | 1.8 |
CVSS Temporal Score: | 7.5 (High) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 7.5 (High) |
STIG Risk Rating: High
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Plugin Source
This is the smb_nt_ms20_may_4556846.nasl nessus plugin source code. This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
#
# (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(136509);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/11/30");
script_cve_id(
"CVE-2020-0909",
"CVE-2020-0963",
"CVE-2020-1010",
"CVE-2020-1035",
"CVE-2020-1048",
"CVE-2020-1051",
"CVE-2020-1054",
"CVE-2020-1058",
"CVE-2020-1060",
"CVE-2020-1061",
"CVE-2020-1062",
"CVE-2020-1064",
"CVE-2020-1067",
"CVE-2020-1070",
"CVE-2020-1071",
"CVE-2020-1072",
"CVE-2020-1076",
"CVE-2020-1078",
"CVE-2020-1079",
"CVE-2020-1081",
"CVE-2020-1092",
"CVE-2020-1093",
"CVE-2020-1108",
"CVE-2020-1112",
"CVE-2020-1113",
"CVE-2020-1114",
"CVE-2020-1116",
"CVE-2020-1136",
"CVE-2020-1141",
"CVE-2020-1143",
"CVE-2020-1149",
"CVE-2020-1153",
"CVE-2020-1154",
"CVE-2020-1174",
"CVE-2020-1175",
"CVE-2020-1176",
"CVE-2020-1179"
);
script_xref(name:"MSKB", value:"4556846");
script_xref(name:"MSKB", value:"4556853");
script_xref(name:"MSFT", value:"MS20-4556846");
script_xref(name:"MSFT", value:"MS20-4556853");
script_xref(name:"IAVA", value:"2020-A-0213-S");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
script_name(english:"KB4556853: Windows 8.1 and Windows Server 2012 R2 May 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 4556853
or cumulative update 4556846. It is, therefore, affected by
multiple vulnerabilities :
- A denial of service vulnerability exists when .NET Core
or .NET Framework improperly handles web requests. An
attacker who successfully exploited this vulnerability
could cause a denial of service against a .NET Core or
.NET Framework web application. The vulnerability can be
exploited remotely, without authentication. A remote
unauthenticated attacker could exploit this
vulnerability by issuing specially crafted requests to
the .NET Core or .NET Framework application. The update
addresses the vulnerability by correcting how the .NET
Core or .NET Framework web application handles web
requests. (CVE-2020-1108)
- 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-2020-1141)
- A denial of service vulnerability exists when Hyper-V on
a Windows Server fails to properly handle specially
crafted network packets. (CVE-2020-0909)
- An information disclosure vulnerability exists when the
Windows kernel improperly handles objects in memory. An
attacker who successfully exploited this vulnerability
could obtain information to further compromise the users
system. (CVE-2020-1072)
- An information disclosure vulnerability exists when the
Windows Client Server Run-Time Subsystem (CSRSS) fails
to properly handle objects in memory. An attacker who
successfully exploited the vulnerability could obtain
information to further compromise the users system.
(CVE-2020-1116)
- 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-2020-1048, CVE-2020-1070)
- A denial of service vulnerability exists when Windows
improperly handles objects in memory. An attacker who
successfully exploited the vulnerability could cause a
target system to stop responding. (CVE-2020-1076)
- 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-2020-1051, CVE-2020-1174, CVE-2020-1175,
CVE-2020-1176)
- An elevation of privilege vulnerability exists when the
Windows fails to properly handle objects in memory. An
attacker who successfully exploited this vulnerability
could run arbitrary code. An attacker could then install
programs; view, change, or delete data; or create new
accounts with full user rights. (CVE-2020-1079)
- An elevation of privilege vulnerability exists in
Windows Block Level Backup Engine Service (wbengine)
that allows file deletion in arbitrary locations.
(CVE-2020-1010)
- An information disclosure vulnerability exists when the
Windows GDI component 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 the Windows GDI component handles objects
in memory. (CVE-2020-0963, CVE-2020-1179)
- A remote code execution vulnerability exists when
Internet Explorer improperly accesses 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. (CVE-2020-1062,
CVE-2020-1092)
- An elevation of privilege vulnerability exists in
Windows Installer because of the way Windows Installer
handles certain filesystem operations. (CVE-2020-1078)
- 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-2020-1064)
- 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-2020-1153)
- 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-2020-1054, CVE-2020-1143)
- 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-2020-1136)
- 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-2020-1067)
- A security feature bypass vulnerability exists in
Microsoft Windows when the Task Scheduler service fails
to properly verify client connections over RPC. An
attacker who successfully exploited this vulnerability
could run arbitrary code as an administrator. An
attacker could then install programs; view, change, or
delete data; or create new accounts with full user
rights. (CVE-2020-1113)
- An elevation of privilege vulnerability exists when the
Windows Background Intelligent Transfer Service (BITS)
IIS module improperly handles uploaded content. An
attacker who successfully exploited this vulnerability
could upload restricted file types to an IIS-hosted
folder. (CVE-2020-1112)
- An elevation of privilege vulnerability exists when the
Windows Printer Service improperly validates file paths
while loading printer drivers. An authenticated attacker
who successfully exploited this vulnerability could run
arbitrary code with elevated system privileges.
(CVE-2020-1081)
- A remote code execution vulnerability exists in the way
that the Microsoft Script Runtime 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. (CVE-2020-1061)
- An elevation of privilege vulnerability exists when
Windows improperly handles errors tied to Remote Access
Common Dialog. An attacker who successfully exploited
the vulnerability could run arbitrary code with elevated
privileges. (CVE-2020-1071)
- 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-2020-1149)
- 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-2020-1114)
- 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-2020-1154)
- A remote code execution vulnerability exists in the way
that the VBScript 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. (CVE-2020-1035, CVE-2020-1058,
CVE-2020-1060, CVE-2020-1093)");
script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4556846/windows-8-1-kb4556846");
script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4556853/windows-8-1-kb4556853");
script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB4556853 or Cumulative Update KB4556846.");
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-2020-1176");
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:"2020/05/12");
script_set_attribute(attribute:"patch_publication_date", value:"2020/05/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/12");
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) 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('audit.inc');
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 = 'MS20-05';
kbs = make_list(
'4556846',
'4556853'
);
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(win81:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);
# Windows 8 EOL
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
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:'6.3',
sp:0,
rollup_date:'05_2020',
bulletin:bulletin,
rollup_kb_list:[4556846, 4556853])
)
{
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());
}
The latest version of this script can be found in these locations depending on your platform:
- Linux / Unix:
/opt/nessus/lib/nessus/plugins/smb_nt_ms20_may_4556846.nasl
- Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\smb_nt_ms20_may_4556846.nasl
- Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/smb_nt_ms20_may_4556846.nasl
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How to Run
Here is how to run the KB4556853: Windows 8.1 and Windows Server 2012 R2 May 2020 Security Update as a standalone plugin via the Nessus web user interface (https://localhost:8834/):
- Click to start a New Scan.
- Select Advanced Scan.
- Navigate to the Plugins tab.
- On the top right corner click to Disable All plugins.
- On the left side table select Windows : Microsoft Bulletins plugin family.
- On the right side table select KB4556853: Windows 8.1 and Windows Server 2012 R2 May 2020 Security Update plugin ID 136509.
- Specify the target on the Settings tab and click to Save the scan.
- Run the scan.
Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.
Basic usage:
/opt/nessus/bin/nasl smb_nt_ms20_may_4556846.nasl -t <IP/HOST>
Run the plugin with audit trail message on the console:
/opt/nessus/bin/nasl -a smb_nt_ms20_may_4556846.nasl -t <IP/HOST>
Run the plugin with trace script execution written to the console (useful for debugging):
/opt/nessus/bin/nasl -T - smb_nt_ms20_may_4556846.nasl -t <IP/HOST>
Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):
/opt/nessus/bin/nasl -K /tmp/state smb_nt_ms20_may_4556846.nasl -t <IP/HOST>
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References
MSKB | Microsoft Knowledge Base: MSFT | Microsoft Security Bulletin:
- MS20-4556846, MS20-4556853
- 2020-A-0213-S
- https://www.tenable.com/plugins/nessus/136509
- https://support.microsoft.com/en-us/help/4556846/windows-8-1-kb4556846
- https://support.microsoft.com/en-us/help/4556853/windows-8-1-kb4556853
- https://vulners.com/nessus/SMB_NT_MS20_MAY_4556846.NASL
- 136501 - KB4551853: Windows 10 Version 1809 and Windows Server 2019 May 2020 Security Update
- 136502 - KB4556799: Windows 10 Version 1903 and Windows 10 Version 1909 May 2020 Security Update
- 136503 - KB4556807: Windows 10 Version 1803 May 2020 Security Update
- 136504 - KB4556812: Windows 10 Version 1709 May 2020 Security Update
- 136505 - KB4556813: Windows 10 Version 1607 and Windows Server 2016 May 2020 Security Update
- 136506 - KB4556826: Windows 10 May 2020 Security Update
- 136507 - KB4556843: Windows 7 and Windows Server 2008 R2 May 2020 Security Update
- 136508 - KB4556852: Windows Server 2012 May 2020 Security Update
- 136510 - KB4556854: Windows Server 2008 May 2020 Security Update
- 136564 - Security Updates for Microsoft .NET Framework (May 2020)
- 136512 - Security Updates for Internet Explorer (May 2020)
Version
This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file smb_nt_ms20_may_4556846.nasl version 1.11. For more plugins, visit the Nessus Plugin Library.
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