Check Point Advisories

Branch.io Cross-Site Scripting

Vulnerability
Protection

Check Point Reference:	CPAI-2018-1096
Date Published:	19 Nov 2018
Severity:	High
Last Updated:	Monday 03 December, 2018
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Websites using Branch.io
Vulnerability Description	A Cross Site Scripting (XSS) vulnerability exists in Branch.io. Successful exploitation of this vulnerability would allow remote attackers to inject an arbitrary web script into the affected system.

Protection Overview

This protection will detect and block 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 Branch.io Cross-Site Scripting 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 Server Enforcement Violation.
Attack Information: Branch.io Cross-Site Scripting