// For flags

CVE-2023-32170

Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability

Severity Score

6.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGateway. User interaction is required to exploit this vulnerability in that the target must choose to accept a client certificate.

The specific flaw exists within the processing of client certificates. The issue results from the lack of proper validation of certificate data. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20494.

Vulnerabilidad de denegación de servicio de validación de entrada incorrecta 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 la interacción del usuario para aprovechar esta vulnerabilidad, ya que el objetivo debe elegir aceptar un certificado de cliente. La falla específica existe en el procesamiento de certificados de clientes. El problema se debe a la falta de validación adecuada de los datos del certificado. Un atacante puede aprovechar esta vulnerabilidad para crear una condición de denegación de servicio en el sistema. Era ZDI-CAN-20494.

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation UaGateway. User interaction is required to exploit this vulnerability in that the target must choose to accept a client certificate.
The specific flaw exists within the processing of client certificates. The issue results from the lack of proper validation of certificate data. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

*Credits: Đỗ Minh Tuấn (@tuanit96) and Tran Van Khang (@khangkito) of STAR Labs SG Pte. Ltd.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
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-20: Improper Input Validation
CAPEC
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