Check Point Advisories

Adobe Flash Player Security Bypass (APSB16-29: CVE-2016-4271)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0785
Date Published:	13 Sep 2016
Severity:	High
Last Updated:	Monday 19 September, 2016
Source:	Adobe APSB16-29
Industry Reference:	CVE-2016-4271
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Adobe Flash Player Desktop Runtime 23.0.0.162 Adobe Flash Player Extended Support Release 18.0.0.375 Adobe Flash Player for Google Chrome 23.0.0.162 Adobe Flash Player for Microsoft Edge and Internet Explorer 11 23.0.0.162 Adobe Flash Player for Linux 11.2.202.635
Vulnerability Description	A security bypass vulnerability has been reported in Adobe Flash Player. This vulnerability is an instance of a sandbox escape vulnerability. The specific vulnerability exploits two uncommon ways of encoding an URI that lead to information leakage, effectively bypassing protections provided by the sandbox.
Update/Patch Avaliable	Apply patches from: APSB16-29

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 Adobe Flash Player Security Bypass (APSB16-29: CVE-2016-4271) 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: Adobe Flash Protection Violation.
Attack Information: Adobe Flash Player Security Bypass (APSB16-29: CVE-2016-4271)