Check Point Advisories

Suspicious Proxy Auto-Config File

Vulnerability
Protection

Check Point Reference:	CPAI-2016-1123
Date Published:	7 Feb 2017
Severity:	Critical
Last Updated:	Sunday 05 August, 2018
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Web Clients
Vulnerability Description	An attacker can force browsers to use a malicious .pac file, and redirect traffic to a fake site. A successful attack might result in loss of data or connection hijack.

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 Suspicious Proxy Auto-Config File 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: Content Protection Violation.
Attack Information: Suspicious Proxy Auto-Config File