Check Point Advisories

Microsoft ASP.NET Resource Paths Canonicalization (MS05-004; CVE-2004-0847)

Vulnerability
Protection

Check Point Reference:	CPAI-2004-187
Date Published:	3 Nov 2009
Severity:	High
Last Updated:	Tuesday 03 November, 2009
Source:
Industry Reference:	CVE-2004-0847
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The .NET framework is a windows framework for building and running software. The framework supports a variety of programming languages. A component of this framework is ASP.NET which allows for the development of dynamic Web applications in different programming languages. A vulnerability exists in the ASP.NET programming framework within the authentication schema. The error exists in the canonicalization of requested ASP.NET resource paths. This flaw can be exploited by remote unauthenticated users to access server secured resources without prior authorization. The vulnerable target machine will execute a restricted ASP.NET script and serve the resulting web page to the attacker. The attacker will not be prompted to verify his credentials before being served the restricted content.

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 Microsoft ASP.NET Resource Paths Canonicalization (MS05-004) 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: Microsoft ASP.NET resource paths canonicalization (MS05-004)