6.5
MEDIUM
CVE-2023-32171
Unified Automation UaGateway OPC UA Server Denial-of-Service Null Pointer Dereference Vuln
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.

INFO

Published Date :

May 3, 2024, 2:15 a.m.

Last Modified :

Nov. 21, 2024, 8:02 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2023-32171 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-32171 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

References to Advisories, Solutions, and Tools

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Writeups, PoCs of the bugs I found while preparing for the Pwn2Own Miami 2023 contest targeting UaGateway from the OPC UA Server category.

ics opc-ua pwn2own pwn2own-miami cve-2023-32170 cve-2023-32171 cve-2023-32173 cve-2023-32174 uagateway

Python CMake HTML Less C++ C Makefile Starlark Cuda Shell

Updated: 4 months ago
60 stars 6 fork 6 watcher
Born at : Aug. 5, 2023, 10:27 p.m. This repo has been linked 4 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-32171 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-32171 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt
    Added Reference https://www.zerodayinitiative.com/advisories/ZDI-23-776/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by [email protected]

    May. 03, 2024

    Action Type Old Value New Value
    Added 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.
    Added Reference Zero Day Initiative https://www.zerodayinitiative.com/advisories/ZDI-23-776/ [No types assigned]
    Added Reference Zero Day Initiative https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt [No types assigned]
    Added CWE Zero Day Initiative CWE-476
    Added CVSS V3 Zero Day Initiative AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-32171 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-32171 weaknesses.

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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Latest DB Update: May. 15, 2025 7:03