Check Point Advisories

Advantech WebAccess Stack Buffer Overflow (CVE-2021-38408)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1520
Date Published:	29 Dec 2022
Severity:	Critical
Last Updated:	Thursday 29 December, 2022
Source:
Industry Reference:	CVE-2021-38408
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Advantech WebAccess versions 9.02 and prior
Vulnerability Description	A stack-based buffer overflow exists in Advantech WebAccess. Successful exploitation could lead to arbitrary code execution.

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

In the IPS tab, click Protections and find the Advantech WebAccess Stack Buffer Overflow (CVE-2021-38408) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: Advantech WebAccess Stack Buffer Overflow (CVE-2021-38408)