Check Point Advisories

Advantech WebAccess SCADA Buffer Overflow (CVE-2019-6550)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-1536
Date Published:	25 Nov 2019
Severity:	Critical
Last Updated:	Monday 25 November, 2019
Source:
Industry Reference:	CVE-2019-6550
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	WebAccess
Vulnerability Description	A stack-based buffer overflow vulnerability exists in Advantech WebAccess. The vulnerability is due to a lack of boundary checks while copying user-supplied data into a stack-based buffer within bwstwww.exe. Successful exploitation could lead to arbitrary code execution under context of Administrator.

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 Advantech WebAccess SCADA Buffer Overflow (CVE-2019-6550) 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 SCADA Buffer Overflow (CVE-2019-6550)