Check Point Advisories

Internet Explorer JavaScript Opener Object Information Disclosure (MS11-018; CVE-2011-1245)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-214
Date Published:	12 Apr 2011
Severity:	High
Last Updated:	Tuesday 12 April, 2011
Source:
Industry Reference:	CVE-2011-1245
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	An information disclosure vulnerability has been reported in Microsoft Internet Explorer. A remote attacker could exploit this issue by convincing a user to open a maliciously crafted HTML file with Internet Explorer, which may allow the attacker to view data from a Web page in another Internet Explorer domain. The vulnerability is caused when certain processes in Internet Explorer incorrectly allow scripts to access and read content from different domains. To Trigger this issue, an attacker may create a malicious web page and persuade a user to view it. Successful exploitation of this vulnerability will allow an attacker to view the content in another browser window in another domain or Internet Explorer zone.

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 / R71 / R70 / R65

In the IPS tab, click Protections and find the Internet Explorer JavaScript Opener Object Information Disclosure (MS11-018) 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: Internet Explorer JavaScript opener object information disclosure (MS11-018)