CVE-2023-32171

Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGateway. Authentication is required to exploit this vulnerability.

The specific flaw exists within the ImportCsv method. A crafted XML payload can cause a null pointer dereference. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20495.

Vulnerabilidad de denegación de servicio de desreferencia de puntero nulo del servidor UaGateway OPC UA de Unified Automation. Esta vulnerabilidad permite a atacantes remotos crear una condición de denegación de servicio en las instalaciones afectadas de Unified Automation UaGateway. Se requiere autenticación para aprovechar esta vulnerabilidad. La falla específica existe dentro del método ImportCsv. un payload XML manipulada puede provocar una desreferencia del puntero nulo. Un atacante puede aprovechar esta vulnerabilidad para crear una condición de denegación de servicio en el sistema. Era ZDI-CAN-20495.

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGateway. Authentication is required to exploit this vulnerability.
The specific flaw exists within the ImportCsv method. A crafted XML payload can cause a null pointer dereference. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

*Credits: Axel '0vercl0k' Souchet of https://doar-e.github.io/

CVSS Scores

ZDIv3 6.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-05-03 CVE Reserved
2023-05-31 CVE Published
2024-05-03 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-23-776	X_research Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt	2024-05-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Unified Automation Search vendor "Unified Automation"		UaGateway Search vendor "Unified Automation" for product "UaGateway"				1.5.12.482 Search vendor "Unified Automation" for product "UaGateway" and version "1.5.12.482"		en		Affected