CVE-2021-40142

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En OPC Foundation Local Discovery Server (LDS) versiones anteriores a 1.04.402.463, unos atacantes remotos pueden causar una denegación de servicio (DoS) mediante el envío de mensajes cuidadosamente diseñados que conllevan a el Acceso a una Ubicación de Memoria Después del Final de un Búfer.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-25 CVE Reserved
2021-08-27 CVE Published
2024-05-12 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdf	2022-09-03
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-40142.pdf	2022-09-03

URL	Date	SRC
https://opcfoundation.org/security-bulletins	2022-09-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Siemens Search vendor "Siemens"	Simatic Process Historian Opc Ua Server Firmware Search vendor "Siemens" for product "Simatic Process Historian Opc Ua Server Firmware"	< 2022 Search vendor "Siemens" for product "Simatic Process Historian Opc Ua Server Firmware" and version " < 2022"	-	Affected	in	Siemens Search vendor "Siemens"	Simatic Process Historian Opc Ua Server Search vendor "Siemens" for product "Simatic Process Historian Opc Ua Server"	-	-	Safe
Siemens Search vendor "Siemens"	Simatic Process Historian Opc Ua Server Firmware Search vendor "Siemens" for product "Simatic Process Historian Opc Ua Server Firmware"	2022 Search vendor "Siemens" for product "Simatic Process Historian Opc Ua Server Firmware" and version "2022"	-	Affected	in	Siemens Search vendor "Siemens"	Simatic Process Historian Opc Ua Server Search vendor "Siemens" for product "Simatic Process Historian Opc Ua Server"	-	-	Safe
Opcfoundation Search vendor "Opcfoundation"		Local Discover Server Search vendor "Opcfoundation" for product "Local Discover Server"				< 1.04.402.463 Search vendor "Opcfoundation" for product "Local Discover Server" and version " < 1.04.402.463"		-		Affected
Siemens Search vendor "Siemens"		Simatic Net Pc Search vendor "Siemens" for product "Simatic Net Pc"				14 Search vendor "Siemens" for product "Simatic Net Pc" and version "14"		-		Affected
Siemens Search vendor "Siemens"		Simatic Net Pc Search vendor "Siemens" for product "Simatic Net Pc"				15 Search vendor "Siemens" for product "Simatic Net Pc" and version "15"		-		Affected
Siemens Search vendor "Siemens"		Simatic Net Pc Search vendor "Siemens" for product "Simatic Net Pc"				16 Search vendor "Siemens" for product "Simatic Net Pc" and version "16"		-		Affected
Siemens Search vendor "Siemens"		Simatic Net Pc Search vendor "Siemens" for product "Simatic Net Pc"				17 Search vendor "Siemens" for product "Simatic Net Pc" and version "17"		-		Affected
Siemens Search vendor "Siemens"		Simatic Wincc Search vendor "Siemens" for product "Simatic Wincc"				-		-		Affected
Siemens Search vendor "Siemens"		Simatic Wincc Runtime Search vendor "Siemens" for product "Simatic Wincc Runtime"				-		professional		Affected
Siemens Search vendor "Siemens"		Simatic Wincc Unified Scada Runtime Search vendor "Siemens" for product "Simatic Wincc Unified Scada Runtime"				-		-		Affected
Siemens Search vendor "Siemens"		Telecontrol Server Basic Search vendor "Siemens" for product "Telecontrol Server Basic"				3.0 Search vendor "Siemens" for product "Telecontrol Server Basic" and version "3.0"		-		Affected