Check Point Advisories

Suspicious Mail Attachment Containing JavaScript Code

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0212
Date Published:	13 Mar 2016
Severity:	Critical
Last Updated:	Sunday 20 August, 2017
Source:	CheckPoint
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Mail attachments containing JavaScript code were observed as part of various phishing campaigns. A remote attacker could send e-mails including those files and convince users to manually trigger their execution. This would allow the malicious code to run and infect the target system. This method is often used by ransomware such as Locky, Cerber, CryptoXXX, and others.

Protection Overview

This protection detects and blocks 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 Suspicious Mail Attachment Containing JavaScript Code 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: SMTP Protection Violation.
Attack Information: Suspicious Mail Attachment Containing JavaScript Code