Check Point Advisories

Adobe Flash Player beginGradientFill Memory Corruption (APSB11-02; CVE-2011-0561)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-029
Date Published:	20 Feb 2011
Severity:	Critical
Last Updated:	Sunday 20 February, 2011
Source:
Industry Reference:	CVE-2011-0561
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description	The Adobe Flash Player is a multimedia and application player that renders Shockwave Flash (SWF) files. A memory corruption vulnerability has been reported in Adobe Flash Player. The vulnerability is due to insufficient type checking of the an argument in the beginGradientFill method of the Graphics object by the Adobe Flash Player. A remote attacker may exploit this issue by convincing a victim to open a specially crafted file with malicious values in the beginGradientFill method. Successful exploitation of this vulnerability could allow the attacker to take complete control of an affected system.

Protection Overview

This protection will detect and block malformed files with malicious values in the beginGradientFill method.

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 beginGradientFill Memory Corruption (APSB11-02) 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 beginGradientFill memory corruption (APSB11-02)