Check Point Advisories

Apple Safari Webkit Button First-Letter Style Rendering Code Execution (CVE-2010-1392)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-376
Date Published:	20 Sep 2010
Severity:	High
Last Updated:	Monday 20 September, 2010
Source:
Industry Reference:	CVE-2010-1392
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Safari is a web browsing application developed by Apple. Safari browsing functionality is built around the set of components called WebKit. WebKit is a development toolkit which allows third party developers to build applications that use Internet technologies such as HTML, HTTP, and others. A remote code execution vulnerability has been discovered in Apple Safari's WebKit. The vulnerability is due to a use after free error when processing 'first-letter' CSS style. This vulnerability may be exploited by remote attackers to execute arbitrary code on a target system by enticing a user to open a maliciously crafted file. Successful exploitation of this vulnerability will allow an attacker to take complete control of the affected system.

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 Apple Safari Webkit Button First-Letter Style Rendering Code Execution 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: Web Client Enforcement Violation.
Attack Information: Apple Safari Webkit Button first-letter style rendering code execution