Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-32170Unified Automation UaGateway OPC UA Server Improper Input Validation Denial-of-Service Vulnerability

Medium 6.5

In plain English

A medium-severity improper input validation in UaGateway from Unified Automation. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 3.0)6.5Medium

Exploit odds (30 days)0.6%top 51.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Unified Automation	UaGateway	1.5.12.482

Weakness: CWE-20 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

ZDI-23-775 x_research-advisory
vendor-provided URL vendor-advisory