CVE-2023-32171 Unified Automation UaGateway OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability

Medium 6.5 Published 3 May 2024 Updated 2 Aug 2024

Remote authenticated attackers can cause a denial-of-service condition in Unified Automation UaGateway via a crafted XML payload triggering a null pointer dereference.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-32171?

CVE-2023-32171 is a medium-severity vulnerability in Unified Automation UaGateway, published on 3 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-476

Which versions are affected by CVE-2023-32171?

It affects 1 product.

Products include Unified-Automation Uagateway.

How do I fix CVE-2023-32171?

No fix has been published for CVE-2023-32171 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-32171 being exploited?

There is no known exploitation of CVE-2023-32171 in the wild and no public exploit code.

Sources

Also known as GHSA-97p9-ff9m-h6m4.