Check Point Advisories

Mitsubishi Electric E-Designer BEComliSlave Status_bit Stack Buffer Overflow (CVE-2017-9638)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0760
Date Published:	17 Sep 2017
Severity:	Medium
Last Updated:	Thursday 07 December, 2017
Source:
Industry Reference:	CVE-2017-9638
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Mitsubishi Electric E-Designer 7.52 all builds
Vulnerability Description	A stack-based buffer overflow vulnerability exists in Mitsubishi's Electric E-Designer. The vulnerability is due to the missing input validation of the Status_bit property of BEComliSlave configuration file. A remote attacker can exploit this vulnerability by enticing a user to visit a maliciously crafted website.

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 Mitsubishi Electric E-Designer BEComliSlave Status_bit Stack 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: Mitsubishi Electric E-Designer BEComliSlave Status_bit Stack Buffer Overflow