Check Point Advisories

Microsoft .NET Framework Entity Expansion Denial of Service (MS13-082; CVE-2013-3860)

Vulnerability
Protection

Check Point Reference:	CPAI-2013-2918
Date Published:	8 Oct 2013
Severity:	High
Last Updated:	Monday 09 January, 2017
Source:	Microsoft MS13-082
Industry Reference:	CVE-2013-3860
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?	Microsoft .NET Framework 2.0 Service Pack 2 Microsoft .NET Framework 3.5 Microsoft .NET Framework 3.5 Service Pack 1 Microsoft .NET Framework 3.5.1 Microsoft .NET Framework 4 Microsoft .NET Framework 4.5
Vulnerability Description	A denial of service vulnerability exists in the .NET Framework. The vulnerability is caused when the .NET Framework attempts to parse a specially crafted document type definition (DTD) for XML data when an XML digital signature is validated. An attacker who successfully exploited this vulnerability could cause the server to crash or become unresponsive.
Update/Patch Avaliable	Apply patches from: MS13-082

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

In the IPS tab, click Protections and find the Microsoft .NET Framework Entity Expansion Denial of Service (MS13-082) 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: Content Protection Violation.
Attack Information: Microsoft .NET Framework Entity Expansion Denial of Service (MS13-082)