Check Point Advisories

Google Chrome Video Downloader Extension XSS

Check Point Reference: CPAI-2018-0833
Date Published: 8 Aug 2018
Severity: High
Last Updated: Thursday 09 August, 2018
Source: Project-zero
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Google Chrome Video Downloader Extension
Vulnerability Description A cross-site scripting vulnerability exists in Google Chrome Video Downloader Extension. Successful exploitation of this vulnerability would allow remote attackers to inject arbitrary web script into the affected system.

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 Google Chrome Video Downloader Extension XSS 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:  Google Chrome Video Downloader Extension XSS

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