Advisory Details

August 30th, 2023

Unified Automation UaGateway Certificate Parsing Integer Overflow Denial-of-Service Vulnerability

CVE ID	CVE-2023-41185
CVSS SCORE	8.6, AV:N/AC:L/PR:N/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 not required to exploit this vulnerability. The specific flaw exists within the processing of client certificates. When parsing the certificate length field, the process does not properly validate user-supplied data, which can result in an integer overflow. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.
ADDITIONAL DETAILS	Fixed in UaGateway 1.5.13 on March 20, 2023. https://www.unified-automation.com/news/news-details/new-uagateway-v1513-service-release.html
DISCLOSURE TIMELINE	2023-02-14 - Vulnerability reported to vendor 2023-08-30 - Coordinated public release of advisory
CREDIT	Anonymous

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