Check Point Advisories

Nginx Location NTFS Extended Attributes Security Bypass (CVE-2011-4963)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-663
Date Published:	18 Nov 2012
Severity:	High
Last Updated:	Sunday 18 November, 2012
Source:
Industry Reference:	CVE-2011-4963
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A design weakness vulnerability has been reported in nginx HTTP Server. The vulnerability is due to an error when handling specially crafted HTTP requests. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP request to the target. Successful exploitation can lead to disclosure of sensitive information on the affected service.

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 Nginx Location NTFS Extended Attributes Security Bypass 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 Server Enforcement Violation.
Attack Information: Nginx Location NTFS extended attributes security bypass