Check Point Advisories

Advantech WebAccess Stack-based Buffer Overflow (CVE-2018-18999)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-1239
Date Published:	9 Jan 2020
Severity:	High
Last Updated:	Thursday 09 January, 2020
Source:
Industry Reference:	CVE-2018-18999
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Advantech WebAccess prior to 8.3.4
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 BwPAlarm.dll. A remote, unauthenticated attacker could exploit this vulnerability by sending a maliciously crafted RPC request to the target server.

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 Stack-based Buffer Overflow (CVE-2018-18999) 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-based Buffer Overflow (CVE-2018-18999)