Check Point Advisories

Advantech WebAccess HMI Designer Buffer Overflow (CVE-2021-33000)

Check Point Reference: CPAI-2021-0902
Date Published: 22 Dec 2021
Severity: High
Last Updated: Wednesday 22 December, 2021
Industry Reference:CVE-2021-33000
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? Advantech WebAccess HMI Designer
Vulnerability Description A buffer overflow vulnerability exists in the project management file parsing component of Advantech WebAccess HMI Designer. The vulnerability is due to lack of proper validation while processing user supplied NMultistateLamp object data.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Advantech WebAccess HMI Designer Buffer Overflow (CVE-2021-33000) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  Advantech WebAccess HMI Designer Buffer Overflow (CVE-2021-33000)

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