Check Point Advisories

Microsoft ASP.NET Information Disclosure (MS15-041; CVE-2015-1648)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0450
Date Published:	14 Apr 2015
Severity:	High
Last Updated:	Sunday 12 July, 2015
Source:
Industry Reference:	CVE-2015-1648
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft .NET Framework 1.1 Service Pack 1 Microsoft .NET Framework 2.0 Service Pack 2 Microsoft .NET Framework 3.5 Microsoft .NET Framework 3.5.1 Microsoft .NET Framework 4 Microsoft .NET Framework 4.5/4.5.1/4.5.2
Vulnerability Description	An information disclosure vulnerability exists in Microsoft .NET Framework. The vulnerability is due to improper requests sanitization on servers with error messages disabled. A remote attacker can exploit this vulnerability by sending specially crafted requests to the vulnerable server.

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 Information Disclosure (MS15-041) 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 Information Disclosure (MS15-041)