Check Point Advisories

WECON PIStudio basedll TextContent Stack-based Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2019-1454
Date Published:	4 Nov 2019
Severity:	High
Last Updated:	Monday 04 November, 2019
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PI Studio HMI Project Programmer 4.1.9 and prior PIStudio 4.2.34 and prior
Vulnerability Description	A stack-based overflow exists in Wecon PIStudio. This vulnerability is due to input validation error when processing TextContent attributed in a HSC configuration file. A remote attacker could exploit these vulnerabilities by enticing a user to visit a malicious web page or open a crafted document. Successful exploitation could allow the attacker to execute arbitrary code under the security context of the user.

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 R80 / R77 / R75

In the IPS tab, click Protections and find the WECON PIStudio basedll TextContent Stack-based Buffer Overflow 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 Client Enforcement Violation.
Attack Information: WECON PIStudio basedll TextContent Stack-based Buffer Overflow