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Check Point Advisories

Microsoft .NET Framework Remote Code Execution (CVE-2017-8759)

Check Point Reference: CPAI-2017-0750
Date Published: 12 Sep 2017
Severity: High
Last Updated: 18 Sep 2017
Source: Microsoft CVE-2017-8759
Industry Reference:CVE-2017-8759
Protection Provided by:

Security Gateway
R80, R77, R76, R75

Who is Vulnerable? Microsoft .NET Framework 4.6 on Windows 10 for 32-bit Systems
Microsoft .NET Framework 4.6 on Windows 10 for x64-based Systems
Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for x64-based Systems
Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for 32-bit Systems
Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for 32-bit Systems
Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for x64-based Systems
Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems
Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems
Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for x64-based Systems
Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for 32-bit Systems
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems
Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems
Vulnerability Description A remote code execution vulnerability exists in the Microsoft .NET Framework. The vulnerability is due to the way .NET framework parses Web Services. A remote attacker could exploit this vulnerability by sending specially crafted data to the target that uses .NET framework.

Protection Overview

This protection detects 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 / R76 / R75

  1. In the IPS tab, click Protections and find the Microsoft .NET Framework Remote Code Execution (CVE-2017-8759) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

This protection's log will contain the following information:

Attack Name:  Content Protection Violation.
Attack Information:  Microsoft .NET Framework Remote Code Execution (CVE-2017-8759)