Check Point Advisories

Apple CUPS gif_read_lzw Heap Buffer Overflow (CVE-2011-3170)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-431
Date Published:	20 Dec 2011
Severity:	Critical
Last Updated:	Thursday 11 April, 2013
Source:
Industry Reference:	CVE-2011-3170
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A remote code execution vulnerability has been reported in Apple Common UNIX Printing System (CUPS). The vulnerability is due to insufficient validation error while processing image data in GIF files. A remote attacker may exploit this vulnerability by enticing a user to open a specially crafted GIF file. Successful exploitation would allow an attacker to execute arbitrary code on the system, in the security context of the logged on user. An unsuccessful code execution could terminate the application, resulting in a denial of service condition.

Protection Overview

This protection will detect and block attempts to transfer malicious GIF files.

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 Apple CUPS gif_read_lzw Heap Buffer Overflow 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: Content Protection Violation.
Attack Information: Apple CUPS gif_read_lzw heap buffer overflow