Details of VAR-202108-1005

ID

VAR-202108-1005

CVE

CVE-2021-34484

TITLE

plural Microsoft Windows Product Vulnerability to elevate privileges in

Trust: 0.8

sources: JVNDB: JVNDB-2021-002319

DESCRIPTION

Windows User Profile Service Elevation of Privilege Vulnerability. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.The specific flaw exists within the User Profile Service. By creating a directory junction, an attacker can abuse the service to delete a directory. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Microsoft Windows是美国微软（Microsoft）公司的一套个人设备使用的操作系统. Microsoft Windows存在权限许可和访问控制问题漏洞。以下产品和版本受到影响：Windows 10 Version 20H2 for 32-bit Systems,Windows 10 Version 20H2 for ARM64-based Systems,Windows Server, version 20H2 (Server Core Installation),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),Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 1809 for ARM64-based Systems,Windows Server 2019,Windows 10 Version 1809 for 32-bit Systems,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 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 21H1 for x64-based Systems,Windows 10 Version 21H1 for ARM64-based Systems,Windows 10 Version 21H1 for 32-bit Systems. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements

Trust: 3.42

sources: NVD: CVE-2021-34484 // JVNDB: JVNDB-2021-002319 // ZDI: ZDI-21-966 // CNNVD: CNNVD-202108-855 // CNNVD: CNNVD-202104-975 // VULMON: CVE-2021-34484

AFFECTED PRODUCTS

vendor:	microsoft	model:	windows server 20h2	scope:	lt	version:	10.0.19042.1165	Trust: 1.0
vendor:	microsoft	model:	windows server 2008	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows server 2004	scope:	lt	version:	10.0.19041.1165	Trust: 1.0
vendor:	microsoft	model:	windows server 2016	scope:	lt	version:	10.0.14393.4583	Trust: 1.0
vendor:	microsoft	model:	windows server 2008	scope:	eq	version:	r2	Trust: 1.0
vendor:	microsoft	model:	windows 10 20h2	scope:	lt	version:	10.0.19042.1165	Trust: 1.0
vendor:	microsoft	model:	windows 10 1607	scope:	lt	version:	10.0.14393.4583	Trust: 1.0
vendor:	microsoft	model:	windows 10 1507	scope:	lt	version:	10.0.10240.19022	Trust: 1.0
vendor:	microsoft	model:	windows server 2012	scope:	eq	version:	r2	Trust: 1.0
vendor:	microsoft	model:	windows 7	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows 10 2004	scope:	lt	version:	10.0.19041.1165	Trust: 1.0
vendor:	microsoft	model:	windows 8.1	scope:	eq	version:	-	Trust: 1.0
vendor:	microsoft	model:	windows server 2019	scope:	lt	version:	10.0.17763.2114	Trust: 1.0
vendor:	microsoft	model:	windows 10 21h1	scope:	lt	version:	10.0.19043.1165	Trust: 1.0
vendor:	microsoft	model:	windows 10 1809	scope:	lt	version:	10.0.17763.2114	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 10 1909	scope:	lt	version:	10.0.18363.1734	Trust: 1.0
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	scope:	eq	version:	2019	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 2019	scope:	eq	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 10	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:	2004 (server core installation)	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 2016	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 (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	Trust: 0.8
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 2012	scope:	-	version:	-	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:	2019 (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 2019	scope:	eq	version:	(server core installation)	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 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:	2012	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 2008	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	scope:	eq	version:	2008 for x64-based systems sp2 (server core installation)	Trust: 0.8
vendor:	microsoft	model:	windows	scope:	-	version:	-	Trust: 0.7

sources: ZDI: ZDI-21-966 // JVNDB: JVNDB-2021-002319 // NVD: CVE-2021-34484

CVSS

SEVERITY

CVSSV2

CVSSV3

NVD:	CVE-2021-34484
value:	HIGH
Trust: 1.8
secure@microsoft.com:	CVE-2021-34484
value:	HIGH
Trust: 1.0
ZDI:	CVE-2021-34484
value:	HIGH
Trust: 0.7
CNNVD:	CNNVD-202108-855
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202104-975
value:	MEDIUM
Trust: 0.6
VULMON:	CVE-2021-34484
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-2021-34484
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-2021-34484
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
ZDI:	CVE-2021-34484
baseSeverity:	HIGH
baseScore:	7.8
vectorString:	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:	3.0
Trust: 0.7

sources: ZDI: ZDI-21-966 // VULMON: CVE-2021-34484 // JVNDB: JVNDB-2021-002319 // CNNVD: CNNVD-202108-855 // CNNVD: CNNVD-202104-975 // NVD: CVE-2021-34484 // NVD: CVE-2021-34484

PROBLEMTYPE DATA

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

sources: JVNDB: JVNDB-2021-002319 // NVD: CVE-2021-34484

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202108-855

TYPE

permissions and access control issues

Trust: 0.6

sources: CNNVD: CNNVD-202108-855

CONFIGURATIONS

sources: NVD: CVE-2021-34484

PATCH

title:	Windows User Profile Service Elevation of Privilege Vulnerability Security Update Guide	url:	https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/cve-2021-34484	Trust: 0.8
title:	Microsoft has issued an update to correct this vulnerability.	url:	https://msrc.microsoft.com/update-guide/vulnerability/cve-2021-34484	Trust: 0.7
title:	Microsoft Windows Product Privilege License and Access Control Issue Vulnerability Fixes	url:	http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=159250	Trust: 0.6
title:	Known Exploited Vulnerabilities Detector	url:	https://github.com/ostorlab/kev	Trust: 0.1
title:	Threatpost	url:	https://threatpost.com/windows-10-privilege-escalation-zero-day-unofficial-fix/176313/	Trust: 0.1

sources: ZDI: ZDI-21-966 // VULMON: CVE-2021-34484 // JVNDB: JVNDB-2021-002319 // CNNVD: CNNVD-202108-855

EXTERNAL IDS

db:	NVD	id:	CVE-2021-34484	Trust: 3.2
db:	ZDI	id:	ZDI-21-966	Trust: 1.4
db:	JVNDB	id:	JVNDB-2021-002319	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-13488	Trust: 0.7
db:	CXSECURITY	id:	WLB-2022040049	Trust: 0.6
db:	CS-HELP	id:	SB2021081012	Trust: 0.6
db:	PACKETSTORM	id:	166692	Trust: 0.6
db:	CNNVD	id:	CNNVD-202108-855	Trust: 0.6
db:	CS-HELP	id:	SB2021041363	Trust: 0.6
db:	CNNVD	id:	CNNVD-202104-975	Trust: 0.6
db:	VULMON	id:	CVE-2021-34484	Trust: 0.1

sources: ZDI: ZDI-21-966 // VULMON: CVE-2021-34484 // JVNDB: JVNDB-2021-002319 // CNNVD: CNNVD-202108-855 // CNNVD: CNNVD-202104-975 // NVD: CVE-2021-34484

REFERENCES

url:	https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/cve-2021-34484	Trust: 1.7
url:	https://nvd.nist.gov/vuln/detail/cve-2021-34484	Trust: 1.4
url:	https://msrc.microsoft.com/update-guide/vulnerability/cve-2021-34484	Trust: 1.3
url:	https://www.ipa.go.jp/security/ciadr/vul/20210811-ms.html	Trust: 0.8
url:	https://www.jpcert.or.jp/at/2021/at210034.html	Trust: 0.8
url:	https://www.zerodayinitiative.com/advisories/zdi-21-966/	Trust: 0.7
url:	https://vigilance.fr/vulnerability/microsoft-windows-vulnerabilities-of-august-2021-36114	Trust: 0.6
url:	https://packetstormsecurity.com/files/166692/windows-user-profile-service-privlege-escalation.html	Trust: 0.6
url:	https://cxsecurity.com/issue/wlb-2022040049	Trust: 0.6
url:	https://www.cybersecurity-help.cz/vdb/sb2021081012	Trust: 0.6
url:	https://www.cybersecurity-help.cz/vdb/sb2021041363	Trust: 0.6
url:	https://cwe.mitre.org/data/definitions/269.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1
url:	https://threatpost.com/windows-10-privilege-escalation-zero-day-unofficial-fix/176313/	Trust: 0.1

sources: ZDI: ZDI-21-966 // VULMON: CVE-2021-34484 // JVNDB: JVNDB-2021-002319 // CNNVD: CNNVD-202108-855 // CNNVD: CNNVD-202104-975 // NVD: CVE-2021-34484

CREDITS

Abdelhamid Naceri (halov)

Trust: 0.7

sources: ZDI: ZDI-21-966

SOURCES

db:	ZDI	id:	ZDI-21-966
db:	VULMON	id:	CVE-2021-34484
db:	JVNDB	id:	JVNDB-2021-002319
db:	CNNVD	id:	CNNVD-202108-855
db:	CNNVD	id:	CNNVD-202104-975
db:	NVD	id:	CVE-2021-34484

LAST UPDATE DATE

2024-07-10T19:36:18.548000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-21-966	date:	2021-08-11T00:00:00
db:	VULMON	id:	CVE-2021-34484	date:	2023-12-28T00:00:00
db:	JVNDB	id:	JVNDB-2021-002319	date:	2021-08-26T06:47:00
db:	CNNVD	id:	CNNVD-202108-855	date:	2022-04-14T00:00:00
db:	CNNVD	id:	CNNVD-202104-975	date:	2021-04-14T00:00:00
db:	NVD	id:	CVE-2021-34484	date:	2024-07-09T18:27:20.330

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-21-966	date:	2021-08-11T00:00:00
db:	VULMON	id:	CVE-2021-34484	date:	2021-08-12T00:00:00
db:	JVNDB	id:	JVNDB-2021-002319	date:	2021-08-26T00:00:00
db:	CNNVD	id:	CNNVD-202108-855	date:	2021-08-10T00:00:00
db:	CNNVD	id:	CNNVD-202104-975	date:	2021-04-13T00:00:00
db:	NVD	id:	CVE-2021-34484	date:	2021-08-12T18:15:09.117