CVE-2023-32172: uagateway Use-After-Free (CVSS 6.5)

Description

Unified Automation UaGateway OPC UA Server Use-After-Free 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 implementation of the ImportXML function. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20497.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
unified-automation	uagateway	< 1.5.13.487

References

Other References

https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt https://www.zerodayinitiative.com/advisories/ZDI-23-777/ https://documentation.unified-automation.com/uagateway/1.5.14/CHANGELOG.txt https://www.zerodayinitiative.com/advisories/ZDI-23-777/

Frequently Asked Questions

What is CVE-2023-32172? +

Unified Automation UaGateway OPC UA Server Use-After-Free 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 implementation of the ImportXML function. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20497. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2023-32172? +

CVE-2023-32172 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-32172? +

CVE-2023-32172 affects products from unified-automation, specifically: uagateway. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-32172? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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