Check Point Advisories

Adobe Flash Player ActionScript 3 Buffer Overflow (APSB11-21; CVE-2011-2136)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-390
Date Published:	16 Aug 2011
Severity:	Critical
Last Updated:	Tuesday 16 August, 2011
Source:
Industry Reference:	CVE-2011-2136
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description	Adobe Flash Player is a multimedia and application player that renders Shockwave Flash (SWF) files. A buffer overflow vulnerability has been reported in Adobe Flash Player. The vulnerability is due to insufficient input validation by the application while executing ActionScript code. A remote attacker could exploit this vulnerability by enticing an unsuspecting victim to open a web page containing malicious SWF files.

Protection Overview

This protection will detect and block attempts to transfer malformed SWF files over HTTP.

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 / R71 / R70

In the IPS tab, click Protections and find the Adobe Flash Player ActionScript 3 Buffer Overflow (APSB11-21) 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 Products Violation.
Attack Information: Adobe Flash Player ActionScript 3 buffer overflow (APSB11-21)