Check Point Advisories

Microsoft .NET Framework Denial of Service (MS15-048: CVE-2015-1672)

Check Point Reference: CPAI-2015-0564
Date Published: 11 May 2015
Severity: High
Last Updated: Tuesday 12 May, 2015
Source: Microsoft MS15-048
Industry Reference:CVE-2015-1672
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? 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 A Denial of Service vulnerability has been reported in the Microsoft .Net Framework. The vulnerability is due to an error in the way that Microsoft .Net Framework handles XML documents with an invalid EncryptedData element. A remote attacker could exploit this vulnerability by sending specially crafted data to the target server that uses .NET framework.
Update/Patch AvaliableApply patches from: MS15-048

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

  1. In the IPS tab, click Protections and find the Microsoft .NET Framework Denial of Service (MS15-048: CVE-2015-1672) 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 Server Enforcement Violation.
Attack Information:  Microsoft .NET Framework Denial of Service (MS15-048: CVE-2015-1672)

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