Advisory Details

May 31st, 2023

Unified Automation UaGateway NodeManagerOpcUa Use-After-Free Remote Code Execution Vulnerability

ZDI-23-780
ZDI-CAN-20577

CVE ID CVE-2023-32174
CVSS SCORE 9.1, AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS Unified Automation
AFFECTED PRODUCTS UaGateway
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Unified Automation UaGateway. Authentication is required to exploit this vulnerability when the product is in its default configuration.

The specific flaw exists within the handling of NodeManagerOpcUa objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

ADDITIONAL DETAILS Unified Automation has issued an update to correct this vulnerability. More details can be found at:
https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt
DISCLOSURE TIMELINE
  • 2023-04-28 - Vulnerability reported to vendor
  • 2023-05-31 - Coordinated public release of advisory
CREDIT Axel '0vercl0k' Souchet of https://doar-e.github.io/
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