Check Point Advisories

Apple Safari Webkit libxslt Arbitrary File Creation (CVE-2011-1774)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-588
Date Published:	27 Dec 2011
Severity:	High
Last Updated:	Tuesday 16 January, 2018
Source:
Industry Reference:	CVE-2011-1774
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	An arbitrary file creation vulnerability exists in Apple Safari. The vulnerability is due to insufficient restriction of the Webkit by Safari while performing an XSL transformation. A remote attacker may exploit this vulnerability by enticing a user to open a specially crafted web page with an affected version of Safari. Successful exploitation could allow an attacker to write or overwrite arbitrary files on the target machine.

Protection Overview

This protection will detect and block attempts to open a malicious XSLT page.

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 libxslt Arbitrary File Creation 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 libxslt Arbitrary File Creation