KB5006732: Windows Server 2012 Security Update (October 2021) - Nessus
High Plugin ID: 154036This page contains detailed information about the KB5006732: Windows Server 2012 Security Update (October 2021) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.
Plugin Overview
ID: 154036
Name: KB5006732: Windows Server 2012 Security Update (October 2021)
Filename: smb_nt_ms21_oct_5006732.nasl
Vulnerability Published: 2021-10-12
This Plugin Published: 2021-10-12
Last Modification Time: 2022-01-26
Plugin Version: 1.8
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: 2021-10-12
Patch Published: 2021-10-12
CVE [?]: CVE-2021-26441, CVE-2021-26442, CVE-2021-36953, CVE-2021-36970, CVE-2021-38662, CVE-2021-38663, CVE-2021-40443, CVE-2021-40449, CVE-2021-40454, CVE-2021-40455, CVE-2021-40460, CVE-2021-40463, CVE-2021-40465, CVE-2021-40466, CVE-2021-40467, CVE-2021-40469, CVE-2021-40476, CVE-2021-40477, CVE-2021-40478, CVE-2021-40488, CVE-2021-40489, CVE-2021-41331, CVE-2021-41332, CVE-2021-41335, CVE-2021-41340, CVE-2021-41343, CVE-2021-41345
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 5006732. It is, therefore, affected by multiple vulnerabilities.
Solution
Apply Security Update 5006732 or apply Cumulative Update 5006739
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 KB5006732: Windows Server 2012 Security Update (October 2021) vulnerability:
- Metasploit: exploit/windows/local/cve_2021_40449
[Win32k NtGdiResetDC Use After Free Local Privilege Elevation] - GitHub: https://github.com/Al1ex/WindowsElevation
[CVE-2021-40449] - GitHub: https://github.com/Ascotbe/Kernelhub
[CVE-2021-40449] - GitHub: https://github.com/BL0odz/CVE-2021-40449-NtGdiResetDC-UAF
[CVE-2021-40449] - GitHub: https://github.com/CppXL/cve-2021-40449-poc
[CVE-2021-40449] - GitHub: https://github.com/FunnyWolf/Viper
[CVE-2021-40449] - GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
[CVE-2021-40449] - GitHub: https://github.com/S3cur3Th1sSh1t/WinPwn
[CVE-2021-40449] - GitHub: https://github.com/SamuelTulach/voidmap
[CVE-2021-40449: Using CVE-2021-40449 to manual map kernel mode driver] - GitHub: https://github.com/ollypwn/CallbackHell
[CVE-2021-40449: PoC (DoS) for CVE-2021-40449 - Win32k Elevation of Privilege Vulnerability (LPE)] - GitHub: https://github.com/pipiscrew/timeline
[CVE-2021-40449] - GitHub: https://github.com/robotserves/CVE-2021-40449-Exploit
[CVE-2021-40449] - GitHub: https://github.com/timwhitez/Git-Daily
[CVE-2021-40449] - GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2021-40449] - GitHub: https://github.com/waleedassar/ObpCreateSymbolicLinkName_EoP
[CVE-2021-41335] - GitHub: https://github.com/hakivvi/CVE-2021-40449
[CVE-2021-40449: My exploit for CVE-2021-40449, a Windows LPE via a UAF in ...] - GitHub: https://github.com/Kristal-g/CVE-2021-40449_poc
[CVE-2021-40449: Exploit for CVE-2021-40449] - GitHub: https://github.com/ly4k/CallbackHell
[CVE-2021-40449: Exploit for CVE-2021-40449 - Win32k Elevation of Privilege Vulnerability (LPE)] - GitHub: https://github.com/KaLendsi/CVE-2021-40449-Exploit
[CVE-2021-40449: Windows 10 14393 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-2021-41345
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C
CVSS Base Score: | 7.2 (High) |
Impact Subscore: | 10.0 |
Exploitability Subscore: | 3.9 |
CVSS Temporal Score: | 6.3 (Medium) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 6.3 (Medium) |
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_ms21_oct_5006732.nasl nessus plugin source code. This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.
#%NASL_MIN_LEVEL 70300
##
# (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('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(154036);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/26");
script_cve_id(
"CVE-2021-26441",
"CVE-2021-26442",
"CVE-2021-36953",
"CVE-2021-36970",
"CVE-2021-38662",
"CVE-2021-38663",
"CVE-2021-40443",
"CVE-2021-40449",
"CVE-2021-40454",
"CVE-2021-40455",
"CVE-2021-40460",
"CVE-2021-40463",
"CVE-2021-40465",
"CVE-2021-40466",
"CVE-2021-40467",
"CVE-2021-40469",
"CVE-2021-40476",
"CVE-2021-40477",
"CVE-2021-40478",
"CVE-2021-40488",
"CVE-2021-40489",
"CVE-2021-41331",
"CVE-2021-41332",
"CVE-2021-41335",
"CVE-2021-41340",
"CVE-2021-41343",
"CVE-2021-41345"
);
script_xref(name:"IAVA", value:"2021-A-0472-S");
script_xref(name:"IAVA", value:"2021-A-0475-S");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/12/01");
script_xref(name:"MSKB", value:"5006732");
script_xref(name:"MSKB", value:"5006739");
script_xref(name:"MSFT", value:"MS21-5006732");
script_xref(name:"MSFT", value:"MS21-5006739");
script_name(english:"KB5006732: Windows Server 2012 Security Update (October 2021)");
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 5006732. It is, therefore, affected by multiple vulnerabilities.");
script_set_attribute(attribute:"solution", value:
"Apply Security Update 5006732 or apply Cumulative Update 5006739");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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:L/UI:N/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-2021-41345");
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:'Win32k NtGdiResetDC Use After Free Local Privilege Elevation');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/10/12");
script_set_attribute(attribute:"patch_publication_date", value:"2021/10/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/12");
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) 2021-2022 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');
get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');
bulletin = 'MS21-10';
kbs = make_list(
'5006739',
'5006732'
);
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(win8:'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:'6.2',
sp:0,
rollup_date:'10_2021',
bulletin:bulletin,
rollup_kb_list:[5006739, 5006732])
)
{
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_ms21_oct_5006732.nasl
- Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\smb_nt_ms21_oct_5006732.nasl
- Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/smb_nt_ms21_oct_5006732.nasl
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How to Run
Here is how to run the KB5006732: Windows Server 2012 Security Update (October 2021) 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 KB5006732: Windows Server 2012 Security Update (October 2021) plugin ID 154036.
- 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_ms21_oct_5006732.nasl -t <IP/HOST>
Run the plugin with audit trail message on the console:
/opt/nessus/bin/nasl -a smb_nt_ms21_oct_5006732.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_ms21_oct_5006732.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_ms21_oct_5006732.nasl -t <IP/HOST>
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References
MSKB | Microsoft Knowledge Base: MSFT | Microsoft Security Bulletin:
- MS21-5006732, MS21-5006739
- 2021-A-0472-S, 2021-A-0475-S
- https://www.tenable.com/plugins/nessus/154036
- https://vulners.com/nessus/SMB_NT_MS21_OCT_5006732.NASL
- 154037 - KB5006667: Windows 10 version 1909 Security Update (October 2021)
- 154034 - KB5006669: Windows 10 Version 1607 and Windows Server 2016 Security Update (October 2021)
- 154033 - KB5006670: Windows 10 Version 2004 / Windows 10 Version 20H2 / Windows 10 Version 21H1 October 2021 Security Update
- 154026 - KB5006672: Windows 10 Version 1809 and Windows Server 2019 Security Update (October 2021)
- 154042 - KB5006674: Windows 11 Security Update (October 2021)
- 154041 - KB5006675: WWindows 10 version 1507 LTS Security Update (October 2021)
- 154029 - KB5006699: Windows Server 2022 Security Update (October 2021)
- 154043 - KB5006715: Windows Server 2008 Security Update (October 2021)
- 154035 - KB5006728: Windows 7 and Windows Server 2008 R2 Security Update (October 2021)
- 154040 - KB5006729: Windows Server 2012 R2 Security Update (October 2021)
- 154344 - Oracle Java SE 1.7.0_321 / 1.8.0_311 / 1.11.0_13 / 1.17.0_1 Multiple Vulnerabilities (October 2021 CPU)
- 154345 - Oracle Java SE 1.7.0_321 / 1.8.0_311 / 1.11.0_13 / 1.17.0_1 Multiple Vulnerabilities (Unix October 2021 CPU)
- 154292 - Oracle MySQL Connectors (October 2021 CPU)
- 154332 - Oracle Database Server Multiple Vulnerabilities (October 2021 CPU)
- 154051 - Security Updates for Microsoft Visual Studio Products (October 2021)
- 149515 - Debian DLA-2663-1 : libimage-exiftool-perl security update
- 149218 - Debian DSA-4910-1 : libimage-exiftool-perl - security update
- 155448 - Security Updates for Microsoft Office (November 2021) (macOS)
- 149550 - openSUSE Security Update : perl-Image-ExifTool (openSUSE-2021-707)
- 154982 - Security Updates for Microsoft Excel Products (November 2021)
- 154999 - Security Updates for Exchange (November 2021)
- 155962 - Security Updates for Exchange (November 2021) (Remote)
- 155000 - Security Updates for Microsoft Office Products (November 2021)
- 150692 - Ubuntu 18.04 LTS / 20.04 LTS / 20.10 / 21.04 : ExifTool vulnerability (USN-4987-1)
Version
This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file smb_nt_ms21_oct_5006732.nasl version 1.8. For more plugins, visit the Nessus Plugin Library.
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