Advisory Details

May 31st, 2023

Unified Automation UaGateway AddServer XML Injection Denial-of-Service Vulnerability

ZDI-23-779
ZDI-CAN-20576

CVE ID CVE-2023-32173
CVSS SCORE 5.8, AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
AFFECTED VENDORS Unified Automation
AFFECTED PRODUCTS UaGateway
VULNERABILITY DETAILS

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 when the product is in its default configuration.

The specific flaw exists within the implementation of the AddServer method. By specifying crafted arguments, an attacker can cause invalid characters to be inserted into an XML configuration file. An attacker can leverage this vulnerability to create a persistent denial-of-service condition on the system.

ADDITIONAL DETAILS Unified Automation has issued an update to correct this vulnerability. More details can be found at:
https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt
DISCLOSURE TIMELINE
  • 2023-04-28 - Vulnerability reported to vendor
  • 2023-05-31 - Coordinated public release of advisory
CREDIT Axel '0vercl0k' Souchet of https://doar-e.github.io/
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