Details of VAR-202110-1687

ID

VAR-202110-1687

CVE

CVE-2021-40449

TITLE

plural Microsoft Windows Elevated authority vulnerabilities in products

Trust: 0.8

sources: JVNDB: JVNDB-2021-003309

DESCRIPTION

Win32k Elevation of Privilege Vulnerability. plural Microsoft Windows The product has Win32k There is a vulnerability that can elevate privileges due to a flaw in. Microsoft Win32k是美国微软（Microsoft）公司的一个用于Windows多用户管理的系统文件. Microsoft Windows Win32K存在缓冲区错误漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 1809 for ARM64-based Systems,Windows Server 2019,Windows Server 2019 (Server Core installation),Windows 10 Version 1909 for 32-bit Systems,Windows 10 Version 1909 for x64-based Systems,Windows 10 Version 1909 for ARM64-based Systems,Windows 10 Version 21H1 for x64-based Systems,Windows 10 Version 21H1 for ARM64-based Systems,Windows 10 Version 21H1 for 32-bit Systems,Windows Server 2022,Windows Server 2022 (Server Core installation),Windows 10 Version 2004 for 32-bit Systems,Windows 10 Version 2004 for ARM64-based Systems,Windows 10 Version 2004 for x64-based Systems,Windows Server, version 2004 (Server Core installation),Windows 10 Version 20H2 for x64-based Systems,Windows 10 Version 20H2 for 32-bit Systems,Windows 10 Version 20H2 for ARM64-based Systems,Windows Server, version 20H2 (Server Core Installation),Windows 11 for x64-based Systems,Windows 11 for ARM64-based Systems,Windows 10 for 32-bit Systems,Windows 10 for x64-based Systems,Windows 10 Version 1607 for 32-bit Systems,Windows 10 Version 1607 for x64-based Systems,Windows Server 2016,Windows Server 2016 (Server Core installation),Windows 7 for 32-bit Systems Service Pack 1,Windows 7 for x64-based Systems Service Pack 1,Windows 8.1 for 32-bit systems,Windows 8.1 for x64-based systems,Windows RT 8.1,Windows Server 2008 for 32-bit Systems Service Pack 2,Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation),Windows Server 2008 for x64-based Systems Service Pack 2,Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation),Windows Server 2008 R2 for x64-based Systems Service Pack 1,Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation),Windows Server 2012,Windows Server 2012 (Server Core installation),Windows Server 2012 R2,Windows Server 2012 R2 (Server Core installation)

Trust: 2.25

sources: NVD: CVE-2021-40449 // JVNDB: JVNDB-2021-003309 // CNNVD: CNNVD-202110-828 // VULMON: CVE-2021-40449

AFFECTED PRODUCTS

vendor:	microsoft	model:	windows server 2012	scope:	eq	version:	r2	Trust: 1.0
vendor:	microsoft	model:	windows 10 1507	scope:	lt	version:	10.0.10240.19086	Trust: 1.0
vendor:	microsoft	model:	windows 8.1	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows server 2008	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows server 2022	scope:	lt	version:	10.0.20348.288	Trust: 1.0
vendor:	microsoft	model:	windows server 2016	scope:	lt	version:	10.0.14393.4704	Trust: 1.0
vendor:	microsoft	model:	windows 10 21h1	scope:	lt	version:	10.0.19041.1288	Trust: 1.0
vendor:	microsoft	model:	windows 10 20h2	scope:	lt	version:	10.0.19041.1288	Trust: 1.0
vendor:	microsoft	model:	windows 11 21h2	scope:	lt	version:	10.0.22000.258	Trust: 1.0
vendor:	microsoft	model:	windows rt 8.1	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows server 2012	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows server 2008	scope:	eq	version:	r2	Trust: 1.0
vendor:	microsoft	model:	windows server 2019	scope:	lt	version:	10.0.17763.2237	Trust: 1.0
vendor:	microsoft	model:	windows 10 1809	scope:	lt	version:	10.0.17763.2237	Trust: 1.0
vendor:	microsoft	model:	windows server 2004	scope:	lt	version:	10.0.19041.1288	Trust: 1.0
vendor:	microsoft	model:	windows 7	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows 10 1607	scope:	lt	version:	10.0.14393.4704	Trust: 1.0
vendor:	microsoft	model:	windows 10 1909	scope:	lt	version:	10.0.18363.1854	Trust: 1.0
vendor:	microsoft	model:	windows server 20h2	scope:	lt	version:	10.0.19042.1288	Trust: 1.0
vendor:	microsoft	model:	windows 10 2004	scope:	lt	version:	10.0.19041.1288	Trust: 1.0
vendor:	microsoft	model:	windows 11	scope:	eq	version:	*	Trust: 1.0
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2016 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2008 for x64-based systems sp2 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2008 r2 for x64-based systems sp1 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2012 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server 2022	scope:	eq	version:	(server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server 2022	scope:	eq	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	20h2 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2008 for 32-bit systems sp2 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server 2019	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows 10	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2022	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2019	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2012	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server 2016	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2012 r2	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows 7	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2008 for 32-bit systems sp2	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server 2008	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2008 r2 for x64-based systems sp1	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2019 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2004 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows rt 8.1	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2008 for x64-based systems sp2	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows 11	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2016	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server 2012	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2012 r2 (server core installation)	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows 8.1	scope:	-	version:	-	Trust: 0.8
vendor:	マイクロソフト	model:	microsoft windows server	scope:	eq	version:	2022 (server core installation)	Trust: 0.8

sources: JVNDB: JVNDB-2021-003309 // NVD: CVE-2021-40449

CVSS

SEVERITY

CVSSV2

CVSSV3

NVD:	CVE-2021-40449
value:	HIGH
Trust: 1.8
secure@microsoft.com:	CVE-2021-40449
value:	HIGH
Trust: 1.0
CNNVD:	CNNVD-202110-828
value:	HIGH
Trust: 0.6
VULMON:	CVE-2021-40449
value:	MEDIUM
Trust: 0.1

NVD:
severity:	MEDIUM
baseScore:	4.6
vectorString:	AV:L/AC:L/AU:N/C:P/I:P/A:P
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	3.9
impactScore:	6.4
acInsufInfo:	FALSE
obtainAllPrivilege:	FALSE
obtainUserPrivilege:	FALSE
obtainOtherPrivilege:	FALSE
userInteractionRequired:	FALSE
version:	2.0
Trust: 1.0
NVD:	CVE-2021-40449
severity:	MEDIUM
baseScore:	4.6
vectorString:	AV:L/AC:L/AU:N/C:P/I:P/A:P
accessVector:	LOCAL
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.9

NVD:
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	1.8
impactScore:	5.9
version:	3.1
Trust: 2.0
NVD:	CVE-2021-40449
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	LOCAL
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: VULMON: CVE-2021-40449 // JVNDB: JVNDB-2021-003309 // CNNVD: CNNVD-202110-828 // NVD: CVE-2021-40449 // NVD: CVE-2021-40449

PROBLEMTYPE DATA

problemtype:	CWE-416	Trust: 1.0
problemtype:	Improper authority management (CWE-269) [NVD Evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-003309 // NVD: CVE-2021-40449

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202110-828

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202110-828

CONFIGURATIONS

sources: NVD: CVE-2021-40449

PATCH

title:	Win32k Elevation of Privilege Vulnerability Security Update Guide	url:	https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/cve-2021-40449	Trust: 0.8
title:	Microsoft Win32k Buffer error vulnerability fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=165450	Trust: 0.6
title:	Viper	url:	https://github.com/funnywolf/viper	Trust: 0.1
title:	CVE-2021-40449-Exploit	url:	https://github.com/robotserves/cve-2021-40449-exploit	Trust: 0.1
title:	-	url:	https://github.com/end-satan/viper	Trust: 0.1

sources: VULMON: CVE-2021-40449 // JVNDB: JVNDB-2021-003309 // CNNVD: CNNVD-202110-828

EXTERNAL IDS

db:	NVD	id:	CVE-2021-40449	Trust: 2.5
db:	PACKETSTORM	id:	164926	Trust: 1.6
db:	JVNDB	id:	JVNDB-2021-003309	Trust: 0.8
db:	CS-HELP	id:	SB2021101211	Trust: 0.6
db:	CNNVD	id:	CNNVD-202110-828	Trust: 0.6
db:	VULMON	id:	CVE-2021-40449	Trust: 0.1

sources: VULMON: CVE-2021-40449 // JVNDB: JVNDB-2021-003309 // CNNVD: CNNVD-202110-828 // NVD: CVE-2021-40449

REFERENCES

url:	http://packetstormsecurity.com/files/164926/win32k-ntgdiresetdc-use-after-free-local-privilege-escalation.html	Trust: 2.2
url:	https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/cve-2021-40449	Trust: 1.6
url:	https://nvd.nist.gov/vuln/detail/cve-2021-40449	Trust: 1.4
url:	https://www.ipa.go.jp/security/ciadr/vul/20211013-ms.html	Trust: 0.8
url:	https://www.jpcert.or.jp/at/2021/at210045.html	Trust: 0.8
url:	https://vigilance.fr/vulnerability/windows-vulnerabilities-of-october-2021-36648	Trust: 0.6
url:	https://www.cybersecurity-help.cz/vdb/sb2021101211	Trust: 0.6
url:	https://msrc.microsoft.com/update-guide/vulnerability/cve-2021-40449	Trust: 0.6

sources: JVNDB: JVNDB-2021-003309 // CNNVD: CNNVD-202110-828 // NVD: CVE-2021-40449

CREDITS

Boris Larin (oct0xor)</a> with Kaspersky

Trust: 0.6

sources: CNNVD: CNNVD-202110-828

SOURCES

db:	VULMON	id:	CVE-2021-40449
db:	JVNDB	id:	JVNDB-2021-003309
db:	CNNVD	id:	CNNVD-202110-828
db:	NVD	id:	CVE-2021-40449

LAST UPDATE DATE

2024-07-25T23:05:36.969000+00:00

SOURCES UPDATE DATE

db:	VULMON	id:	CVE-2021-40449	date:	2023-08-08T00:00:00
db:	JVNDB	id:	JVNDB-2021-003309	date:	2021-10-22T05:27:00
db:	CNNVD	id:	CNNVD-202110-828	date:	2022-05-24T00:00:00
db:	NVD	id:	CVE-2021-40449	date:	2024-07-24T17:07:46.127

SOURCES RELEASE DATE

db:	VULMON	id:	CVE-2021-40449	date:	2021-10-13T00:00:00
db:	JVNDB	id:	JVNDB-2021-003309	date:	2021-10-22T00:00:00
db:	CNNVD	id:	CNNVD-202110-828	date:	2021-10-12T00:00:00
db:	NVD	id:	CVE-2021-40449	date:	2021-10-13T01:15:09.703