Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-32172Unified Automation UaGateway OPC UA Server Use-After-Free Denial-of-Service Vulnerability

Medium 6.5

In plain English

A medium-severity use-after-free in UaGateway from Unified Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities).

Severity (CVSS 3.0)6.5Medium

Exploit odds (30 days)1.4%top 27.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Unified Automation UaGateway OPC UA Server Use-After-Free 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 implementation of the ImportXML function. 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 create a denial-of-service condition on the system. Was ZDI-CAN-20497.

Affected products (as reported)

Vendor	Product	Versions
Unified Automation	UaGateway	1.5.12.482

Weakness: CWE-416 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

ZDI-23-777 x_research-advisory
vendor-provided URL vendor-advisory