Staying Safe in Times of Cyber Uncertainty
Check Point Advisories

Microsoft Internet Explorer toStaticHTML Cross-Site-Scripting (MS11-050; CVE-2011-1252)

Check Point Reference: CPAI-2011-298
Date Published: 14 Jun 2011
Severity: High
Last Updated: Sunday 14 February, 2016
Industry Reference:CVE-2011-1252
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65

Who is Vulnerable?
Vulnerability Description An information disclosure vulnerability exists in the way that Internet Explorer handles content using specific strings when sanitizing HTML. An attacker could exploit the vulnerability by constructing a specially crafted Web page that could allow information disclosure if a user viewed the Web page. An attacker who successfully exploited this vulnerability could inflict cross-site scripting on the user, allowing the attacker to execute script in the user's security context against a site that is using the toStaticHTML API.

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

  1. In the IPS tab, click Protections and find the Microsoft Internet Explorer toStaticHTML Cross-Site-Scripting (MS11-050) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  Microsoft Internet Explorer toStaticHTML cross site scripting (MS11-050)

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