CVE-2022-29864

OPC Foundation UA .NET Standard Resource Exhaustion Denial-of-Service Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

OPC UA .NET Standard Stack 1.04.368 allows a remote attacker to cause a server to crash via a large number of messages that trigger Uncontrolled Resource Consumption.

OPC UA .NET Standard Stack versión 1.04.368, permite a un atacante remoto causar el bloqueo de un servidor por medio de un gran número de mensajes que desencadenan un Consumo Descontrolado de Recursos

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of message chunks. By sending a large number of requests, an attacker can cause the number of sessions to grow without limit. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

*Credits: Vera Mens, Uri Katz, Sharon Brizinov of Claroty Research

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

2022-04-27 CVE Reserved
2022-06-16 CVE Published
2024-08-03 CVE Updated
2024-11-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2022-29864.pdf	2022-06-27

URL	Date	SRC
https://opcfoundation.org/security	2022-06-27

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Opcfoundation Search vendor "Opcfoundation"		Ua .net Standard Stack Search vendor "Opcfoundation" for product "Ua .net Standard Stack"				< 1.4.368.58 Search vendor "Opcfoundation" for product "Ua .net Standard Stack" and version " < 1.4.368.58"		-		Affected