Details of VAR-202108-2032

ID

VAR-202108-2032

CVE

CVE-2021-40142

TITLE

OPC Foundation Local Discovery Server Buffer error vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-010007

DESCRIPTION

In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer. The Local Discovery Server provides the necessary infrastructure to publicly expose the OPC UA servers available on a given computer

Trust: 1.8

sources: NVD: CVE-2021-40142 // JVNDB: JVNDB-2021-010007 // VULHUB: VHN-397219 // VULMON: CVE-2021-40142

AFFECTED PRODUCTS

vendor:	siemens	model:	simatic wincc runtime	scope:	eq	version:	-	Trust: 1.0
vendor:	opcfoundation	model:	local discover server	scope:	lt	version:	1.04.402.463	Trust: 1.0
vendor:	siemens	model:	simatic net pc	scope:	eq	version:	15	Trust: 1.0
vendor:	siemens	model:	telecontrol server basic	scope:	eq	version:	3.0	Trust: 1.0
vendor:	siemens	model:	simatic net pc	scope:	eq	version:	17	Trust: 1.0
vendor:	siemens	model:	simatic process historian opc ua server	scope:	lt	version:	2022	Trust: 1.0
vendor:	siemens	model:	simatic wincc	scope:	eq	version:	-	Trust: 1.0
vendor:	siemens	model:	simatic wincc unified scada runtime	scope:	eq	version:	-	Trust: 1.0
vendor:	siemens	model:	simatic process historian opc ua server	scope:	eq	version:	2022	Trust: 1.0
vendor:	siemens	model:	simatic net pc	scope:	eq	version:	16	Trust: 1.0
vendor:	siemens	model:	simatic net pc	scope:	eq	version:	14	Trust: 1.0
vendor:	opc	model:	local discovery server	scope:	eq	version:	-	Trust: 0.8
vendor:	opc	model:	local discovery server	scope:	eq	version:	1.04.402.463	Trust: 0.8

sources: JVNDB: JVNDB-2021-010007 // NVD: CVE-2021-40142

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-40142
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2021-40142
value:	HIGH
Trust: 1.0
NVD:	CVE-2021-40142
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-202108-2640
value:	HIGH
Trust: 0.6
VULHUB:	VHN-397219
value:	MEDIUM
Trust: 0.1
VULMON:	CVE-2021-40142
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2021-40142
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.9
VULHUB:	VHN-397219
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2021-40142
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.1
Trust: 2.0
OTHER:	JVNDB-2021-010007
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: VULHUB: VHN-397219 // VULMON: CVE-2021-40142 // JVNDB: JVNDB-2021-010007 // CNNVD: CNNVD-202108-2640 // NVD: CVE-2021-40142 // NVD: CVE-2021-40142

PROBLEMTYPE DATA

problemtype:	CWE-119	Trust: 1.1
problemtype:	Buffer error (CWE-119) [NVD evaluation ]	Trust: 0.8

sources: VULHUB: VHN-397219 // JVNDB: JVNDB-2021-010007 // NVD: CVE-2021-40142

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202108-2640

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202108-2640

PATCH

title:	Security Update for Local Discovery Server (LDS) OPC Foundation Security Bulletin	url:	https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-40142.pdf	Trust: 0.8
title:	Local Discovery Server Buffer error vulnerability fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=161299	Trust: 0.6

sources: JVNDB: JVNDB-2021-010007 // CNNVD: CNNVD-202108-2640

EXTERNAL IDS

db:	NVD	id:	CVE-2021-40142	Trust: 3.4
db:	SIEMENS	id:	SSA-321292	Trust: 1.8
db:	JVNDB	id:	JVNDB-2021-010007	Trust: 0.8
db:	CNNVD	id:	CNNVD-202108-2640	Trust: 0.7
db:	ICS CERT	id:	ICSA-22-132-12	Trust: 0.7
db:	CS-HELP	id:	SB2022051720	Trust: 0.6
db:	VULHUB	id:	VHN-397219	Trust: 0.1
db:	VULMON	id:	CVE-2021-40142	Trust: 0.1

sources: VULHUB: VHN-397219 // VULMON: CVE-2021-40142 // JVNDB: JVNDB-2021-010007 // CNNVD: CNNVD-202108-2640 // NVD: CVE-2021-40142

REFERENCES

url:	https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdf	Trust: 1.8
url:	https://files.opcfoundation.org/securitybulletins/opc%20foundation%20security%20bulletin%20cve-2021-40142.pdf	Trust: 1.8
url:	https://opcfoundation.org/security-bulletins/	Trust: 1.8
url:	https://nvd.nist.gov/vuln/detail/cve-2021-40142	Trust: 0.8
url:	https://vigilance.fr/vulnerability/siemens-simatic-denial-of-service-via-opc-foundation-local-discovery-server-38294	Trust: 0.6
url:	https://us-cert.cisa.gov/ics/advisories/icsa-22-132-12	Trust: 0.6
url:	https://www.cybersecurity-help.cz/vdb/sb2022051720	Trust: 0.6
url:	https://cwe.mitre.org/data/definitions/119.html	Trust: 0.1
url:	https://github.com/live-hack-cve/cve-2021-40142	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1
url:	https://www.cisa.gov/uscert/ics/advisories/icsa-22-132-12	Trust: 0.1

sources: VULHUB: VHN-397219 // VULMON: CVE-2021-40142 // JVNDB: JVNDB-2021-010007 // CNNVD: CNNVD-202108-2640 // NVD: CVE-2021-40142

CREDITS

Siemens reported this vulnerability to CISA.

Trust: 0.6

sources: CNNVD: CNNVD-202108-2640

SOURCES

db:	VULHUB	id:	VHN-397219
db:	VULMON	id:	CVE-2021-40142
db:	JVNDB	id:	JVNDB-2021-010007
db:	CNNVD	id:	CNNVD-202108-2640
db:	NVD	id:	CVE-2021-40142

LAST UPDATE DATE

2024-08-14T15:27:37.861000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-397219	date:	2022-09-03T00:00:00
db:	VULMON	id:	CVE-2021-40142	date:	2022-09-03T00:00:00
db:	JVNDB	id:	JVNDB-2021-010007	date:	2022-06-13T08:39:00
db:	CNNVD	id:	CNNVD-202108-2640	date:	2022-05-18T00:00:00
db:	NVD	id:	CVE-2021-40142	date:	2022-09-03T03:54:54.180

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-397219	date:	2021-08-27T00:00:00
db:	VULMON	id:	CVE-2021-40142	date:	2021-08-27T00:00:00
db:	JVNDB	id:	JVNDB-2021-010007	date:	2022-06-13T00:00:00
db:	CNNVD	id:	CNNVD-202108-2640	date:	2021-08-27T00:00:00
db:	NVD	id:	CVE-2021-40142	date:	2021-08-27T07:15:08.630