Check Point Advisories

Suspicious Webpage JavaScript Downloader

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0520
Date Published:	26 Jun 2016
Severity:	Medium
Last Updated:	Tuesday 06 December, 2016
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Web Browsers
Vulnerability Description	Certain malicious executable files can be hidden using js downloader file. A remote attacker could exploit this vulnerability to entice unsuspecting users to execute arbitrary files.

Protection Overview

This protection detects suspicious webpages containing javascript file downloaders.

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 Suspicious Webpage JavaScript Downloader 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: Suspicious Webpage JavaScript Downloader