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 :
Aug. 8, 2025, 2:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.0 | MEDIUM | [email protected] |
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.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-32171.
| URL | Resource |
|---|---|
| https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt | Release Notes |
| https://www.zerodayinitiative.com/advisories/ZDI-23-776/ | Third Party Advisory |
| https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt | Release Notes |
| https://www.zerodayinitiative.com/advisories/ZDI-23-776/ | Third Party Advisory |
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.
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
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.
-
Initial Analysis by [email protected]
Aug. 08, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:unified-automation:uagateway:*:*:*:*:*:*:*:* versions up to (excluding) 1.5.13.487 Added Reference Type Zero Day Initiative: https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt Types: Release Notes Added Reference Type Zero Day Initiative: https://www.zerodayinitiative.com/advisories/ZDI-23-776/ Types: Third Party Advisory Added Reference Type CVE: https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt Types: Release Notes Added Reference Type CVE: https://www.zerodayinitiative.com/advisories/ZDI-23-776/ Types: Third Party Advisory -
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