Check Point Advisories

Cisco ASA VPN Portal Cross-Site Scripting

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0123
Date Published:	21 Feb 2016
Severity:	Critical
Last Updated:	Friday 14 July, 2017
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Cisco ASA VPN Portal
Vulnerability Description	A cross-site scripting vulnerability has been reported in Cisco ASA VPN portal. The vulnerability is due to lack of data sanitization on URL parameters. A remote attacker can exploit this vulnerability by sending a specially crafted request to an affected server.

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 Cisco ASA VPN Portal 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: Cisco Protection Violation.
Attack Information: Cisco ASA VPN Portal Cross-Site Scripting