Check Point Advisories

Microsoft Edge and Internet Explorer Same Origin Policy Bypass

Check Point Reference: CPAI-2019-0426
Date Published: 2 Apr 2019
Severity: High
Last Updated: Wednesday 03 April, 2019
Source:
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? Microsoft Edge
Microsoft Internet Explorer
Vulnerability Description A vulnerability exists in Microsoft Edge and Internet Explorer web browsers that could allow security feature bypass. The vulnerability could allow an attacker to bypass the Same Origin Policy. Successful exploitation of this vulnerability could allow the disclosure of sensitive information.

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

  1. In the IPS tab, click Protections and find the Microsoft Edge and Internet Explorer Same Origin Policy Bypass protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  Microsoft Edge and Internet Explorer Same Origin Policy Bypass

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